1. The utility model provides a special chip module of water vapor treatment weather which characterized in that includes:

the system comprises a radio frequency module connected with an antenna, a baseband signal processing module connected with the radio frequency module, a navigation resolving module connected with the baseband signal processing module, and a water vapor resolving module connected with the navigation resolving module and a meteorological observer, wherein the radio frequency module receives and processes satellite navigation signals transmitted by the antenna; the baseband signal processing module receives the signal transmitted by the radio frequency module, acquires a navigation message and a navigation observed quantity corresponding to the signal, and sends the navigation message and the navigation observed quantity to the navigation resolving module; the navigation resolving module receives the navigation message and the navigation observed quantity transmitted by the baseband signal processing module and resolves navigation positioning information; the steam resolving module receives the navigation positioning information resolved by the navigation resolving module and meteorological data provided by the meteorological observation instrument, and resolves the steam data.

2. The weather-specific chip module according to claim 1, wherein the radio frequency module includes an amplifier module and a filter module, an input end of the amplifier module is connected to the antenna, and an output end of the amplifier module is connected to the filter module, wherein the amplifier module amplifies the received satellite navigation signal and transmits the amplified satellite navigation signal to the filter module, and the filter module includes a plurality of filters with different parameters, and filters the amplified satellite navigation signal and transmits the filtered satellite navigation signal to the baseband signal processing module.

3. The weather-specific chip module for water vapor treatment according to claim 1, wherein the baseband signal processing module includes a mixer, an analog-to-digital converter, a capturing module, a tracking module, and a processing module, the frequency of the filtered satellite navigation signal is converted by the mixer, and then the satellite navigation signal is analog-to-digital converted by the analog-to-digital converter and converted into a digital signal, the capturing module correctly estimates the carrier frequency and the pseudo code phase of the digital signal, the tracking module tracks each digital signal of the captured digital signal, and the processing module obtains the navigation message and the navigation observed quantity corresponding to each digital signal according to each digital signal of the tracked digital signals.

4. The weather-only chip module according to claim 1, wherein the navigation solution module obtains navigation satellite position information according to the navigation message; resolving pseudo-range measurement information according to the navigation observed quantity; and determining navigation positioning information according to the navigation satellite position information and the pseudo-range measurement information.

5. The weather-specific chip module set for water treatment according to claim 1, wherein the satellite navigation signal comprises at least one of a global positioning system signal, a beidou satellite navigation system signal, a glonass satellite navigation system signal, and a galileo satellite navigation signal, and the chip module set further comprises:

the storage module stores the satellite navigation signal, the navigation positioning information, the meteorological data and the water vapor data;

and the external interfaces comprise at least one of an antenna interface, a network port, a serial port, a USB interface and a CAN interface.

6. The weather chip module special for water vapor treatment according to claim 1, wherein the water vapor calculating module receives the navigation positioning information calculated by the navigation calculating module and the weather data provided by the weather observation instrument, and the calculating of the water vapor data includes: processing the navigation positioning information and meteorological data to obtain zenith troposphere delay data; acquiring an atmospheric weighted average temperature; and obtaining water vapor data according to the zenith troposphere delay data and the atmospheric weighted average temperature.

7. A moisture observation system based on a navigation satellite system, comprising:

a satellite data receiver that receives satellite data of a navigation satellite system;

a weather observation instrument that transmits weather data;

the special chip module for water vapor treatment weather detection as claimed in any one of claims 1-6, which is arranged in the satellite data receiver.

8. The navigation satellite system based moisture observation system of claim 7, further comprising:

the satellite orbit clock error data receiving device receives preliminary satellite data of the navigation satellite system, the satellite orbit clock error data receiving device also receives satellite clock error data and precise orbit data, and the satellite orbit clock error data receiving device adjusts the preliminary satellite data according to the satellite clock error data and the precise orbit data and obtains the satellite data.

9. The navigation satellite system based moisture observation system of claim 7, further comprising:

the server is connected with the water vapor treatment weather special chip module and receives the water vapor data sent by the water vapor treatment weather special chip module;

the station is connected with the water vapor treatment weather special chip module and is used for receiving the water vapor data sent by the water vapor treatment weather special chip module

A water vapor data output interface;

processing the chip;

the receiving device data interface is connected with the processing chip;

and the controller interface is connected with the processing chip.

10. A satellite navigation receiving device, comprising the special chip module for water vapor treatment weather according to any one of claims 1 to 6.

Background

The water vapor is a trace gas in the earth atmosphere, is only 0.1% -3% in the atmosphere, is the most active component in the atmosphere, and is more important than other trace gases. Weather phenomena are mostly the result of atmospheric water vapor changes, and water vapor absorbs and releases a large amount of latent heat in the phase change process, directly influences the ground and the air temperature, and then influences the formation of atmospheric vertical stability and convection weather system. Three-dimensional distribution, vertical water vapor transmission and phase change of atmospheric water vapor are one of the power mechanisms restricting the development of the mesoscale weather system.

Since the establishment of the global radio detection air network in the 40 th century, atmospheric water vapor is detected at high altitude, and the acquisition of the vertical profile of the atmospheric water vapor mainly depends on a radio sonde. However, due to the influence of economic cost and other factors, the density of the sounding sites is low, the area coverage distribution is very uneven, the sounding sites cannot be set up in the air above the ocean, the sites are spaced from dozens of kilometers to hundreds of kilometers, the sounding sites are released once every 12 hours, only two times of observation data can be obtained every day, and the low space-time resolution cannot reflect the changeability characteristics of the water vapor. The method for inverting atmospheric water vapor by using remote sensing has the advantages of high equipment cost, difficult maintenance, great influence by cloud and rain weather and difficulty in providing water vapor information data in severe weather, so that the method is generally used for scientific research and is difficult to widely use. A space-based microwave radiometer and a radar which are carried on a low-earth orbit satellite have large influence on observation caused by temperature and humidity changes. The satellite remote sensing atmospheric water vapor method is not high enough in detection precision and vertical resolution and is influenced by cloud and aerosol.

Ground-based GNSS (Global Navigation Satellite System) observation has the advantages of all weather, high precision, low cost and high time resolution, and the observation has good consistency on a time scale. And water vapor observation precision equivalent to that of a radio sonde and a foundation microwave radiometer can be obtained based on the foundation GNSS. As an independent observation means of moisture, ground-based GNSS moisture has been widely used to calibrate system errors of other observation means (such as radiosondes), to improve Numerical Weather Patterns (NWP), and to analyze climate, etc. The ground-based GNSS observation data can be used for a numerical prediction assimilation system, and vertical structure and short-term precipitation prediction of water vapor can be improved by assimilating atmospheric precipitation data or total delay data and the like, so that the method is particularly good for improving the falling area and strength prediction in the rainstorm process. At present, in the GNSS water vapor observation, satellite navigation observation data and meteorological data are collected at stations, the data of the stations are collected to a central station for processing and calculation and then are provided for users, the time consumption is long, and the GNSS water vapor observation is not beneficial to the real-time service of local water vapor.

Disclosure of Invention

In order to solve the above problems, an embodiment of the present invention provides a chip module dedicated for water vapor treatment of weather, where the chip module dedicated for water vapor treatment of weather includes: the system comprises a radio frequency module connected with an antenna, a baseband signal processing module connected with the radio frequency module, a navigation resolving module connected with the baseband signal processing module, and a water vapor resolving module connected with the navigation resolving module and a meteorological observer, wherein the radio frequency module receives and processes satellite navigation signals transmitted by the antenna; the baseband signal processing module receives the signal transmitted by the radio frequency module, acquires a navigation message and a navigation observed quantity corresponding to the signal, and sends the navigation message and the navigation observed quantity to the navigation resolving module; the navigation resolving module receives the navigation message and the navigation observed quantity transmitted by the baseband signal processing module and resolves navigation positioning information; the steam resolving module receives the navigation positioning information resolved by the navigation resolving module and meteorological data provided by the meteorological observation instrument, and resolves the steam data.

In some embodiments, the chip module further comprises a storage module, and the storage module stores the satellite navigation signal, the navigation positioning information, the meteorological data and the water vapor data.

In some embodiments, the chip module further comprises a plurality of external interfaces, and the external interfaces comprise at least one of an antenna interface, a network interface, a serial port, a USB interface, and a CAN interface.

In some embodiments, the radio frequency module includes an amplifier module and a filter module, an input end of the amplifier module is connected to the antenna, and an output end of the amplifier module is connected to the filter module, wherein the amplifier module amplifies the received satellite navigation signal and sends the amplified satellite navigation signal to the filter module, and the filter module includes a plurality of filters with different parameters, and filters the amplified satellite navigation signal and sends the filtered satellite navigation signal to the baseband signal processing module.

In some embodiments, the baseband signal processing module includes a mixer, an analog-to-digital converter, a capturing module, a tracking module, and a processing module, the frequency of the filtered satellite navigation signal is converted by the mixer, and then the filtered satellite navigation signal is analog-to-digital converted by the analog-to-digital converter and converted into a digital signal, the capturing module performs correct estimation on a carrier frequency and a pseudo code phase in the digital signal, the tracking module tracks each digital signal in the captured digital signal, and the processing module obtains a navigation message and a navigation observed quantity corresponding to each digital signal according to each digital signal in the tracked digital signal.

In some embodiments, the navigation solution module obtains navigation satellite position information according to the navigation message; resolving pseudo-range measurement information according to the navigation observed quantity; and determining navigation positioning information according to the navigation satellite position information and the pseudo-range measurement information.

In some embodiments, the satellite navigation signals include at least one of global positioning system signals, Beidou satellite navigation system signals, Glonass satellite navigation system signals, Galileo satellite navigation signals.

In some embodiments, the steam calculating module receives the navigation positioning information calculated by the navigation calculating module and the meteorological data provided by the meteorological observer, and calculating the steam data includes: processing the navigation positioning information and meteorological data to obtain zenith troposphere delay data; acquiring an atmospheric weighted average temperature; and obtaining water vapor data according to the zenith troposphere delay data and the atmospheric weighted average temperature.

The embodiment of the invention also provides a water vapor observation system based on the navigation satellite system, which comprises: a satellite data receiver that receives satellite data of a navigation satellite system; a weather observation instrument that transmits weather data; the water vapor treatment weather special chip module is arranged in the satellite data receiver.

In some embodiments, the water vapor observation system further comprises a satellite orbit clock error data receiving device, the satellite orbit clock error data receiving device receives preliminary satellite data of the navigation satellite system, the satellite orbit clock error data receiving device further receives satellite clock error data and precise orbit data, and the satellite orbit clock error data receiving device adjusts the preliminary satellite data according to the satellite clock error data and the precise orbit data and obtains the satellite data.

In some embodiments, the moisture observation system further comprises: the server is connected with the chip module and receives the water vapor data sent by the chip module; and the station is connected with the chip module and receives the water vapor data sent by the chip module.

In some embodiments, the moisture observation system further comprises: a water vapor data output interface; processing the chip; the receiving device data interface is connected with the processing chip; and the controller interface is connected with the processing chip.

The embodiment of the invention also provides a satellite navigation receiving device which comprises the water vapor treatment weather special chip module.

Compared with the prior art, the embodiment of the invention has at least one of the following advantages:

the embodiment of the invention realizes a single-station steam resolving processing mode, can reduce the risks of mutual dependence, restriction and pollution of station observations in the current central station steam unified resolving process, reduces the system instability caused by network transmission, improves the observation efficiency and the service system stability, can realize the real-time automatic continuous observation of station minute-level steam products, and enables the steam observation product resolution to reach the leap from hour to minute (the current steam service is hour products). The forecasting and predicting capability of medium and small-scale disastrous weather such as strong convection, typhoon and rainstorm and the like and the meteorological disaster prevention and reduction service capability are greatly improved.

Drawings

Non-limiting and non-exhaustive embodiments of the present disclosure are described with reference to the following figures, wherein like reference numerals refer to like parts throughout the various views unless otherwise specified. Components in the figures are not drawn to scale and may be drawn out of scale to facilitate understanding of embodiments of the present disclosure. The following is a description of the drawings.

Fig. 1 is a schematic structural diagram of a water vapor observation system based on a navigation satellite system according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a radio frequency module according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a baseband signal processing module according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a navigation solution module according to an embodiment of the present invention.

Fig. 5 is a schematic flow chart of tropospheric delay estimation according to an embodiment of the present invention.

Fig. 6 is a schematic system diagram of a water vapor observation system based on a navigation satellite system according to an embodiment of the present invention.

Detailed Description

The following description is made for the purpose of illustrating the general principles of the present invention and is not meant to limit the inventive concepts claimed herein. Furthermore, particular features described herein can be used in combination with other described features in each of the various possible combinations and permutations.

It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, B exists alone, and A and B exist together, in addition, the character "/" in the text generally indicates that the associated objects before and after the character is in an "or" relationship.

It will be understood that when an element is referred to as being "connected," "connected," or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may be present. In contrast, when an element is referred to as being "directly adjacent" or "directly coupled" to another element, there are no intervening elements present. Other words used to describe the relationship between elements should be interpreted in a similar manner (e.g., "between … …" versus "directly between … …", "adjacent" versus "directly adjacent", etc.).

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, and/or groups thereof.

It should also be noted that, in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may, in fact, be executed substantially concurrently, or the figures may sometimes be executed in the reverse order, depending upon the functionality/acts involved.

Unless specifically defined otherwise herein, all terms are to be given their broadest interpretation, including the meaning implied by this specification and the meaning understood by those skilled in the art and/or as defined in dictionaries, papers, etc. For the purpose of illustrating the technical content, the constructional features, the achieved objects and the effects of the invention in detail, reference will be made to the following detailed description of the embodiments in conjunction with the accompanying drawings.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a water vapor observation system based on a navigation satellite system according to an embodiment of the present invention. The steam observation system 1 based on navigation satellite system that this embodiment provided includes satellite navigation receiving arrangement 2 and meteorological observation appearance 4, and wherein satellite navigation receiving arrangement 2 includes antenna 3 and steam and handles meteorological special chip module 5, and steam handles meteorological special chip module 5 and specifically includes: the navigation positioning module 6 is connected with the antenna 3, and the navigation positioning module 6 specifically comprises a radio frequency module 10 connected with the antenna 3, a baseband signal processing module 11 connected with the radio frequency module 10, and a navigation resolving module 12 connected with the baseband signal processing module 11; the water vapor resolving module 7 is connected with the navigation resolving module 12 and the meteorological observer 4; a power supply module 8; a memory module 9 and a plurality of external interfaces (not shown in the figure). According to the embodiment of the present disclosure, the water vapor treatment weather-specific chip module 5 may be implemented as a chip or a module.

The rf module 10 receives and processes the satellite navigation signal transmitted by the antenna 3. The baseband signal processing module 11 receives the signal transmitted from the radio frequency module 10, obtains the navigation message and the navigation observed quantity corresponding to the signal, and sends the navigation message and the navigation observed quantity to the navigation resolving module 12. The navigation calculating module 12 receives the navigation message and the navigation observed quantity transmitted by the baseband signal processing module 11, and calculates the navigation positioning information of the water vapor treatment weather special chip module 5. The steam calculating module 7 receives the navigation positioning information of the navigation calculating module 12 and the meteorological data provided by the meteorological observer 4, calculates the delay data according to the navigation positioning information and the meteorological data, and further calculates the steam data. The delay data refers to satellite signal transmission delay caused by atmospheric moisture, and the meteorological data comprises temperature, humidity and air pressure. In this embodiment, power module 8 provides electric power support for whole water vapor treatment weather special chip module 5, storage module 9 storage satellite navigation signal, navigation locating information, information such as weather data and steam data is in order to supply to inquire at any time, external interface includes at least one in antenna interface, the net gape, the serial ports, USB interface and the CAN interface, in this affair example, power module 8 and storage module 9 all set up on water vapor treatment weather special chip module 5, CAN select, power module 8 and storage module 9 are arbitrary or all CAN set up outside water vapor treatment weather special chip module 5, be connected with the chip module through the connecting wire CAN, this embodiment does not put a limit to this.

Referring to fig. 2, fig. 2 is a schematic structural diagram of a radio frequency module according to an embodiment of the present invention. The radio frequency module 10 includes an amplifier module 102 and a filter module, an input end of the amplifier module 102 is connected to the antenna 3 through an antenna interface 101, and an output end of the amplifier module is connected to the filter module through a power divider module 103, wherein the amplifier module 102 amplifies a received satellite navigation signal and sends the amplified satellite navigation signal to the filter module, and the filter module includes a plurality of filters 104 and 105 with different parameters, filters the amplified satellite navigation signal, and sends the filtered satellite navigation signal to the baseband signal processing module 11. Specifically, the input end of the power divider module 103 receives satellite navigation signals transmitted from an antenna, copies the received satellite navigation signals to obtain N paths of satellite navigation signals, and sends the N paths of satellite navigation signals to the N filters through the N output ends of the power divider module respectively.

Optionally, the radio frequency module 10 in the embodiment of the present invention further includes a radio frequency chip 106 disposed between the filter module and the baseband signal processing module 11, where the radio frequency chip 106 receives the filtered satellite navigation signal and sends the processed satellite navigation signal to the baseband signal processing module 11. Specifically, the radio frequency chip 106 obtains M digital intermediate frequency signals according to the received filtered signals respectively sent by the N filter modules, and sends the M digital intermediate frequency signals to the baseband signal processing module 11.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a baseband signal processing module according to an embodiment of the present invention. The baseband signal processing module 11 includes a mixer 111, an analog-to-digital converter 112, an acquisition module 113, a tracking module 114, and a processing module 115, where the filtered satellite navigation signal is frequency-converted by the mixer 111, then is analog-to-digital converted by the analog-to-digital converter 112 and converted into a digital signal, the acquisition module 113 correctly estimates a carrier frequency and a pseudo code phase in the digital signal, the tracking module 114 tracks each digital signal in the acquired digital signal, and the processing module 115 obtains a navigation message and a navigation observed quantity corresponding to each digital signal according to each digital signal in the tracked digital signal. In this embodiment, the baseband signal processing module 11 further includes a transmission module 116, which transmits the data processed by the processing module 115 to the navigation solution module 12.

Specifically, the capturing module 113 of the baseband signal processing module 11 receives M digital intermediate frequency signals, and the capturing module 113 is configured to correctly estimate a carrier frequency and a pseudo code phase of each of the M digital intermediate frequency signals. The baseband signal processing module 11 generates a local C/a code and a local carrier according to each digital intermediate frequency signal in the M digital intermediate frequency signals, and performs correlation operation on each digital intermediate frequency signal, the local C/a code and the local carrier, thereby realizing correct estimation of the carrier frequency and the pseudo code phase of each digital intermediate frequency signal in the M digital intermediate frequency signals, further realizing carrier stripping, and then performing capture control and capture decision, realizing direct capture and guided capture of signals corresponding to the M frequency points, and locally generating a replica code of the pseudo code, i.e., a local pseudo code, and being capable of controlling the frequency and the phase of the local pseudo code.

The tracking module 114 connected to the capturing module 113 is configured to track each of the captured M digital intermediate frequency signals. Specifically, after the capturing module 113 completes the initial pseudo code synchronization, the pseudo codes of the local pseudo code and the digital intermediate frequency signal are not completely aligned, and due to the existence of the doppler shift, the pseudo codes of the local pseudo code and the digital intermediate frequency signal are not synchronized soon, and in order to keep the pseudo codes of the local pseudo code and the digital intermediate frequency signal synchronized and completely align the local pseudo code and the digital intermediate frequency signal, the tracking module 114 is required to track the pseudo codes. For the M digital intermediate frequency signals that have completed tracking, the processing module 115 processes them respectively to find the position of the head of the navigation message of each digital intermediate frequency signal, thereby extracting the navigation message in each digital intermediate frequency signal. Further, the baseband signal processing module 11 needs to transmit the navigation observed quantity in each digital intermediate frequency signal to the navigation resolving module 12 for processing.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a navigation solution module according to an embodiment of the present invention. The navigation solution module 12 includes a navigation observation processing unit 126, a channel delay correction unit 127, a propagation delay correction unit 128, a Position Velocity Time (PVT) solution unit 129, a navigation information unpacking unit 121, a navigation satellite PVT solution unit 122, a navigation observation sub-packaging and framing unit 124, a difference solution unit 125, a navigation satellite forecasting unit 123, a local Time maintaining unit 1210, and further may include a sampling interval calculation unit (not shown in the figure), a first configuration unit (not shown in the figure), and the like.

The navigation resolving module 12 acquires navigation satellite position information according to the navigation message; resolving pseudo-range measurement information according to the navigation observed quantity; and determining navigation positioning information according to the navigation satellite position information and the pseudo-range measurement information. Specifically, the navigation solution module 12 receives the navigation observation from the baseband signal processing module 11, and obtains P pieces of pseudo-range information and the corresponding time of transmitting the satellite navigation signal through the processing of the navigation observation processing unit 126, where the P pieces of pseudo-range information are sent to the PVT solution unit through the processing of the channel delay correction unit 127 and the propagation delay correction unit 128. Further, the navigation observation data after being processed by the channel delay correction unit 127 is simultaneously sent to the differential solution unit 125 for further processing.

The navigation solution module 12 receives the navigation message from the baseband signal processing module 11, obtains ephemeris data and almanac data of the navigation satellite through the unpacking processing of the navigation information unpacking unit 121, stores the ephemeris data and the almanac data in the storage module, and further transmits the ephemeris data and the almanac data to the navigation satellite PVT solution unit 122. The navigation satellite PVT solution unit 122 transmits ephemeris data and almanac data of the navigation satellites and time information to the PVT solution unit 129 and the difference solution unit 125.

Optionally, the navigation solution module 12 may further receive original observation data of a reference station, where the reference station is a fixed GNSS observation station, coordinates of the reference station are reference values of difference correction, and after the packet-splicing frame analysis by the navigation observation amount packet-splicing frame unit 124 and subsequent verification processing, the original observation data of the complete reference station is obtained, and then is sent to the difference solution unit 125. The difference calculating unit 125 performs pseudo-range difference and carrier phase difference on the navigation observed quantity according to the original observation data of the reference station, and transmits the calculation result to the PVT calculating unit 129 for output preprocessing and inspection.

The PVT calculating unit 129 calculates the position information of the navigation satellite corresponding to the frequency point corresponding to each digital intermediate frequency signal according to the received information, such as P pseudo-range information, ephemeris data and almanac data of the navigation satellite transmitted by the navigation satellite PVT calculating unit 122, and the like, and further obtains the navigation positioning information, such as the position, speed and time of the water vapor processing weather-specific chip module 5, according to the position information of the navigation satellite and the P pseudo-range information. The navigation positioning information calculated by the method has higher positioning precision.

The embodiment further comprises a navigation satellite forecasting unit 123, the PVT calculating unit 129 inputs ephemeris data and almanac data into the navigation satellite forecasting unit 123, the navigation satellite forecasting unit 123 forecasts satellite information which can be received by the current water vapor weather processing chip module 5, and sends forecasted satellite star, doppler and other information to a baseband chip, and the baseband chip is a key device for converting satellite analog signals into digital signals and identifies, converts and calculates navigation information carried in the signals.

The embodiment further includes a local time maintaining unit 1210, and the local time maintaining unit 1210 obtains the local time according to the PVT calculating unit 129 of the receiver device.

Optionally, the navigation satellite resolving module 12 is further configured with an external interface, so as to input the navigation positioning information to a screen or other external devices, so that a user can observe the navigation positioning information conveniently or use the output information for other purposes.

Referring to fig. 1, the steam calculating module 7 in this embodiment receives the navigation positioning information calculated by the navigation calculating module and the meteorological data provided by the meteorological observer 4, and can calculate the steam data, including: processing the navigation positioning information and meteorological data to obtain zenith troposphere delay data; acquiring an atmospheric weighted average temperature; and obtaining water vapor data according to the zenith troposphere delay data and the atmospheric weighted average temperature.

Referring to fig. 5, fig. 5 is a schematic flow chart of a ground-based GNSS water vapor detection technique based on a non-differential Point Positioning (PPP) technique according to an embodiment of the present invention. The process comprises the following steps: the terminal receives satellite signals such as Beidou and GPS and the like to obtain pseudo range and navigation positioning information; receiving a precise ephemeris and a precise clock error broadcasted by a satellite, substituting an orbit correction number in the precise ephemeris and a clock error correction number in the precise clock error into a GNSS observation equation, and eliminating ionosphere error influence by adopting a double-frequency non-ionosphere combined model to form a new PPP observation equation; performing parameter estimation aiming at an observation equation by adopting Kalman filtering to obtain zenith troposphere total delay (ZTD); high precision zenith tropospheric static delay is calculated using meteorological data based on any of the commonly used empirical models of tropospheric static delay, such as the Saastamoinen model, the Hopfield model, and Black models (ZHD). From the calculated ZTD and ZHD values, then using ZTD = ZHD + ZWD, the zenith tropospheric wet delay (ZWD) is obtained; obtaining an atmospheric weighted average temperature Tm, further using the atmospheric weighted average temperature Tm and obtaining a conversion factor II of the zenith troposphere wet delay and the atmospheric water-reducing amount by using a Bevis formula; and (4) acquiring data of the atmospheric water reducing amount by using a formula PMV = pi ZWD, and completing the ground GNSS water vapor detection based on the non-differential PPP technology.

In an embodiment of the present application, processing the satellite data and the meteorological data, and obtaining troposphere zenith delay data includes:

performing parameter estimation by adopting Kalman filtering to obtain zenith troposphere total delay (ZTD); high-precision zenith tropospheric delay data (ZHD) are obtained based on a common tropospheric static delay empirical model such as any of a Saastamoieen model, a Hopfield model and a Black model and known barometric pressure calculation, and zenith static delay ZHD (also called zenith dry delay) is subtracted from the total delay (ZTD) to obtain zenith non-static delay data ZWD (also called zenith wet delay).

According to embodiments of the present disclosure, the atmospheric weighted average temperature Tm may be obtained using any method of the prior art.

In an embodiment of the present application, obtaining water vapor data according to the zenith troposphere delay data and the atmospheric weighted average temperature includes:

removing a dry delay component from the zenith troposphere delay data to obtain a wet delay component;

obtaining a conversion factor II of the wet delay of the zenith troposphere and the atmospheric water-reducing amount by using the atmospheric weighted average temperature Tm and a Bevis formula;

and obtaining the atmospheric water reducing capacity data by using a formula PMV = | ZWD.

The conversion from ZTD to atmospheric water-reducible content (PWV) is essentially two steps, first requiring the subtraction of the dry delay (ZHD) component from ZTD to obtain the wet delay component (ZWD), and then converting the ZWD to PWV at the station.

And after obtaining the high-precision wet delay ZWD, calculating to obtain a high-precision atmospheric water vapor Product (PWV) according to Tm, and transmitting to a central server through a network.

In this embodiment, the satellite data includes position information, time information, and wave velocity of a satellite; the meteorological data includes air temperature, humidity and air pressure. The satellite navigation signals include at least one of global positioning system signals, Beidou satellite navigation system signals, Glonass satellite navigation system signals and Galileo satellite navigation signals.

The single-station water vapor calculation processing mode is realized, the risks of mutual dependence, restriction and pollution of station observation in the current central station water vapor unified calculation process can be reduced, the system instability caused by network transmission is reduced, the observation efficiency and the service system stability are improved, the real-time automatic continuous observation of station minute-level water vapor products can be realized, and the resolution of the water vapor observation products can reach the leap from hours to minutes (the current water vapor service is an hour product). The forecasting and predicting capability of medium and small-scale disastrous weather such as strong convection, typhoon and rainstorm and the like and the meteorological disaster prevention and reduction service capability are greatly improved.

In an embodiment of the present invention, a satellite navigation receiving apparatus is further provided, which includes the water vapor processing weather-specific chip module described in any of the above embodiments.

In an embodiment of the present invention, a water vapor observation system based on a navigation satellite system is further provided, and specifically, referring to fig. 6, fig. 6 is a system schematic diagram of a water vapor observation system based on a navigation satellite system according to an embodiment of the present invention. The water vapor observation system comprises: a satellite data receiver that receives satellite data of a navigation satellite system; the meteorological observation instrument sends meteorological data; the water vapor treatment weather special chip module in the embodiment is arranged in the satellite data receiver.

Optionally, the moisture observation system further includes: the satellite orbit clock error data receiving device receives preliminary satellite data of a navigation satellite system, the satellite orbit clock error data receiving device also receives satellite clock error data and precise orbit data, and the satellite orbit clock error data receiving device adjusts the preliminary satellite data according to the satellite clock error data and the precise orbit data and obtains the satellite data which is sent to a water vapor treatment weather special chip module through a RTCM (the Radio Technical Commission for Maritime Services) communication protocol; the server is connected with the water vapor treatment weather special chip module and receives water vapor data sent by the water vapor treatment weather special chip module; the station is connected with the water vapor treatment weather special chip module and receives water vapor data sent by the water vapor treatment weather special chip module; a water vapor data output interface; processing the chip; the receiving device data interface is connected with the processing chip; and the controller interface is connected with the processing chip.

Through the above description of the embodiments, those skilled in the art will clearly understand that the present invention may be implemented by software plus a necessary hardware platform, and may also be implemented by hardware entirely. With this understanding in mind, all or part of the technical solutions of the present invention that contribute to the background can be embodied in the form of a software product, which can be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, etc., and includes instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods of the embodiments or some parts of the embodiments of the present invention.

In embodiments of the present invention, the units/modules may be implemented in software for execution by various types of processors. An identified module of executable code may, for instance, comprise one or more physical or logical blocks of computer instructions which may, for instance, be constructed as an object, procedure, or function. Nevertheless, the executables of an identified module need not be physically located together, but may comprise disparate instructions stored in different bits which, when joined logically together, comprise the unit/module and achieve the stated purpose for the unit/module.

When the units/modules can be implemented by software, considering the level of existing hardware technology, the units/modules can be implemented by software, and those skilled in the art can build corresponding hardware circuits to implement corresponding functions, without considering the cost, the hardware circuits include conventional Very Large Scale Integration (VLSI) circuits or gate arrays and existing semiconductors such as logic chips, transistors, or other discrete components. A module may also be implemented in programmable hardware devices such as field programmable gate arrays, programmable array logic, programmable logic devices or the like.

While certain embodiments of the invention have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the invention. Indeed, the novel methods and systems described herein may be embodied in a variety of other forms; furthermore, various omissions, substitutions and changes in the form of the methods and systems described herein may be made without departing from the spirit of the inventions. The accompanying claims and their equivalents are intended to cover such forms or modifications as would fall within the scope and spirit of the inventions.