CN107544077B - A kind of GNSS data quality testing analysis system and its analysis method - Google Patents
A kind of GNSS data quality testing analysis system and its analysis method Download PDFInfo
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Abstract
The present invention relates to a kind of GNSS data quality testing analysis system and its analysis method, system includes the differential data parsing connecting with network RTD/RTK differential service platform and format converting module, the original satellite that connect with user terminal are observed data and parsed and format converting module and graphical representation and warning function module；Differential data parsing and format converting module and original satellite observation data parsing and format converting module are connected to GNSS precision positioning engine and GNSS data quality detection module, GNSS engine of positioning is connected to the NMEA data resolution module connecting with user terminal, GNSS data quality detection module is connected to graphical representation and warning function module, and NMEA data resolution module is connected to graphical representation and warning function module.The present invention intuitively shows the relationship of GNSS metadata and positioning result, automatic accurate quick discovery orientation problem, impact factor and reason and early warning, high-efficient.
Description
Technical field
The invention belongs to the technical fields of the transmission of digital information, in particular to a kind of intuitively to show GNSS metadata key
Incidence relation between index and positioning result is to facilitate the impact factor of technical staff's quick and precisely positioning effects locating effect
With the GNSS data quality testing analysis system and its analysis method of reason.
Background technique
Network RTK(Real-time kinematic, carrier phase difference technology) it is also referred to as base station RTK, it is to exist in recent years
A kind of new technology set up on the basis of conventional RTK and differential GPS, at present still in test, developing stage.Network RTK
The final locating effect of differential position (mainly fixed rate, positioning accuracy etc.) is related to many influence factors, including difference
(RTCM) quality of data, user terminal original observed data, terminal hardware/algorithm performance, communication network quality etc., one of them
Or multiple problematic all final locating effect can be caused undesirable.
Meanwhile the open source precision positioning algorithm such as RTKlib, TEQC and data analysis tool, main function are based on input
Original observed data is resolved using preset function model analog hardware terminal generates NMEA positioning file, or support pair
GNSS file carry out different-format between conversion, editor and to certain critical index (multipath, cycle slip, signal-to-noise ratio etc.)
Quantitative analysis is done in parsing, this can not intuitively show differential data RTCM, terminal Satellite Observations and terminal positioning result
(NMEA) relevance and qualitative analysis between.
In the prior art, positional deviation correction is carried out to user terminal based on the differential position of RTD/RTK and is finally reached height
During precision positions, often having more influence factor leads to that final terminal can not position or positioning accuracy is undesirable, than
The RTCM quality of data broadcast such as differential data server-side is bad or the user terminal original satellite observation quality of data is bad,
Or be terminal soft hardware performance etc., and independent analysis server-side differential data or user terminal Satellite Observations are difficult really
Fixed number changes the relevance between final positioning result according to critical index, and current there is no any tool or method energy
Enough simple and clear relevance visualizations by positioning result and above-mentioned impact factor are shown, so that network differential service provides
Person generally requires to put into biggish professional human resources in orientation problem and the time carries out data analysis work, and production efficiency is not
It is high.
Summary of the invention
Present invention solves the technical problem that being, in the prior art, based on the differential position of RTD/RTK to user terminal
During progress positional deviation correction is finally reached high accuracy positioning, often having more influence factor causes final terminal without legal
Position or positioning accuracy are undesirable, and independent analysis server-side differential data or user terminal Satellite Observations are difficult to determine that data are closed
Relevance between the variation of keyness index and final positioning result, current not any tool or method can be intuitive bright
The visualization of the relevance of positioning result and above-mentioned impact factor is shown, caused by network differential ISP exist
It generally requires to put into biggish professional human resources when orientation problem and the time carries out data analysis work, production efficiency is not high
Problem, and then provide the GNSS data quality testing analysis system and its analysis method of a kind of optimization.
The technical scheme adopted by the invention is that a kind of GNSS data quality testing analysis system, the system respectively with
Network RTD/RTK differential service platform and user terminal are equipped with, and the system comprises flat with network RTD/RTK differential service
The differential data parsing of platform connection and format converting module, the original satellite that connect with user terminal are observed data and are parsed and format
Conversion module and graphical representation and warning function module；The differential data parsing and format converting module and original satellite are seen
The output end of measured data parsing and format converting module is respectively connected to GNSS engine of positioning and GNSS data quality detection module
Input terminal, the output end of the GNSS engine of positioning is connected to the NMEA data resolution module connecting with user terminal, described
The output end of GNSS data quality detection module is connected to the input terminal of graphical representation Yu warning function module, the NMEA number
The input terminal of graphical representation Yu warning function module is connected to according to the output end of parsing module.
Preferably, the network RTD/RTK differential service platform includes offline differential data management module and real time differential
Data broadcast module, the offline differential data management module export history differential data to differential data parsing and format conversion
Module, the real time differential data broadcast module export real time differential data to differential data parsing and format converting module.
Preferably, the real time differential data broadcast module exports real time differential data to user terminal.
Preferably, the user terminal includes terminal original satellite observation data memory module and NMEA positioning result file
Memory module.
Preferably, terminal original satellite observation data memory module outlet terminal original satellite observes data to original
Satellite Observations parsing and format converting module.
Preferably, the NMEA positioning result file storage module exports NMEA positioning result file to NMEA data and parses
Module.
Preferably, differential data parsing and format converting module by differential data be converted to object format export to
GNSS engine of positioning and GNSS data quality analysis module；The original satellite observation data parsing and format converting module will be whole
End original satellite observation data are converted to object format and export to GNSS engine of positioning and GNSS data quality analysis module.
Preferably, the differential data of the GNSS data quality detection module output object format and terminal original satellite are seen
Measured data is to graphical representation and warning function module.
Preferably, the terminal of the NMEA data resolution module output object format solves NMEA positioning result firmly and GNSS is fixed
The position soft solution NMEA positioning result of engine is to graphical representation and warning function module.
A kind of analysis method using the GNSS data quality testing analysis system, the method includes following steps
It is rapid:
Step 1: data import:
The differential data of differential data parsing and format converting module reception real time differential data broadcast module output, or from
History differential data derived from line differential data management module exports after differential data is converted to object format to GNSS positioning
Engine and GNSS data quality analysis module；
The original satellite for the different-format that original satellite observation data parsing and format converting module export user terminal
Observation data are converted to object format, and the data after conversion are exported to RTK precision positioning engine and GNSS data quality point
Analyse module；
The NMEA positioning result file storage module of user terminal exports NMEA positioning result file to NMEA data and parses
Module；
Step 2: data processing:
GNSS data quality analysis module carries out matter to differential data and terminal original satellite the observation data of set period
Amount checks, exports result to graphical representation and warning function module；
GNSS engine of positioning observes number by real-time and post-processing station-keeping mode and function, to differential data and original satellite
According to being handled, exports the NMEA that soft solution obtains and position file to NMEA data resolution module；
NMEA data resolution module carries out the filtering and verification of wrong data, needle to the NMEA positioning result file received
Verification is passed through and the data of effective position parse；Result is exported to graphical representation and warning function module；
Step 3: graphical representation:
Graphical representation and warning function module export GNSS data quality analysis module and NMEA data resolution module
Data be based on same time coordinate axis be patterned displaying；
Step 4: analysis:
Differential data, terminal original satellite observation data and the terminal of comparative analysis same period solves NMEA positioning result firmly
Figure, obtain when the locating effect that terminal solves NMEA positioning result firmly is bad, corresponding differential data, terminal original satellite are seen
Index value in measured data occurs deteriorating or be mutated, and it is poor for influencing the reason of terminal solves the locating effect of NMEA positioning result firmly
There are quality problems or terminal original satellite to observe the original of data subscriber terminal for the differential data that divided data service platform is broadcast
Observing data, there are quality problems；
Same group of terminal of comparative analysis solves NMEA positioning result and the soft solution NMEA positioning result of GNSS engine of positioning firmly, passes through
Fixed rate and Accuracy Analysis obtain terminal and firmly solve NMEA positioning result and the soft solution NMEA positioning result of GNSS engine of positioning
Superiority and inferiority, analysis obtain the hardware performance of user terminal；
Step 5: early warning:
Graphical representation alarm corresponding to the alarm rule definition generation that warning function module is set, shows patterned
In data.
The present invention provides the GNSS data quality testing analysis system and its analysis method of a kind of optimization, solution is supported in building
All kinds of GNSS data quality analysis tools are analysed, the GNSS data for parsing various dimensions in real time or offline is supported, passes through quantitative analysis shadow
The critical index for ringing final positioning result, such as satellite visibility, continuity, satellite spatial is distributed, carrier phase, and cycle slip is more
Diameter, epoch percentage of head rice etc. show each key index and positioning result under sometime sequence with chart visual means dynamic
Relevance to intuitively show the incidence relation between GNSS metadata key index and positioning result, and realizes that program is automatic
Change monitoring and early warning function, assist technical staff accurately quickly find orientation problem, find influence locating effect impact factor and
Reason saves human resources and time, high production efficiency.
Detailed description of the invention
Fig. 1 is GNSS data analysis process of the invention；
Fig. 2 is that the workflow of the graphical representation based on sequence synchronization time and warning function module in the present invention is shown
It is intended to；
In Fig. 1 and Fig. 2,1. indicate differential data RTCM testing result, including but not limited to satellite visibility, continuity,
2. satellite spatial distribution, carrier phase, cycle slip, multipath, epoch percentage of head rice indicate that terminal original satellite observes Data Detection knot
Fruit, including but not limited to satellite visibility, satellite spatial distribution, satellite noise, carrier phase, cycle slip, multipath, are gone through continuity
First percentage of head rice, 3. indicate the true NMEA file analysis of user as a result, including but not limited to changes in coordinates, positioning states, using defending
4. star, difference age index indicate NMEA file analysis that RTK precision algorithm engine resolves as a result, including but not limited to coordinate
Variation, uses satellite, difference age index at positioning states.
Specific embodiment
The present invention is described in further detail below with reference to embodiment, but protection scope of the present invention is not limited to
This.
As shown, the present invention relates to a kind of GNSS data quality testing analysis system, the system respectively with network
RTD/RTK differential service platform and user terminal are equipped with, and the system comprises connect with network RTD/RTK differential service platform
Connect differential data parsing and format converting module, connect with user terminal original satellite observation data parse and format convert
Module and graphical representation and warning function module；The differential data parsing and format converting module and original satellite observe number
The defeated of GNSS engine of positioning and GNSS data quality detection module is respectively connected to according to the output end of parsing and format converting module
Enter end, the output end of the GNSS engine of positioning is connected to the NMEA data resolution module connecting with user terminal, the GNSS
The output end of data quality checking module is connected to the input terminal of graphical representation Yu warning function module, the NMEA data solution
The output end of analysis module is connected to the input terminal of graphical representation Yu warning function module.
The network RTD/RTK differential service platform includes that offline differential data management module and real time differential data are broadcast
Module, the offline differential data management module export history differential data to differential data parsing and format converting module, institute
It states real time differential data broadcast module and exports real time differential data to differential data parsing and format converting module.
The real time differential data broadcast module exports real time differential data to user terminal.
The user terminal includes terminal original satellite observation data memory module and NMEA positioning result file storage mould
Block.
The terminal original satellite observation data memory module outlet terminal original satellite is observed data to original satellite and is seen
Measured data parsing and format converting module.
The NMEA positioning result file storage module exports NMEA positioning result file to NMEA data resolution module.
In the present invention, GNSS data mainly includes differential data, the user's end that network RTD/RTK differential service platform is broadcast
Original satellite is held to observe data, positioning result file (NMEA).
In the present invention, network RTD/RTK differential service platform refers to the received satellite in physical standard station of certain area
Signal is sent to data processing centre, is NRTD/NRTK by specific virtual networking algorithm, such as virtual networking algorithm, selection
The relatively good base station information in several positions near customer mobile terminal, " virtual " go out a virtual reference station (Virtual
Reference Station), then the VRS differential correcting data stood are broadcast to user terminal, so that it is guaranteed that user reaches high
The effect of precision positioning and rectifying.Wherein, RTD and RTK difference is that algorithm model and parameter selection difference, RTD refer to that pseudorange is poor
Divide (generally sub-meter grade), RTK refers to carrier phase difference (generally can reach Centimeter Level).Above-mentioned VRS technology is earliest by beauty
Tian Bao company, state proposes that there are also major-minor station technology, FKP technologies that Switzerland comes card for other similar technology, under normal circumstances, difference
Service platform is all based on this principle, but algorithm model and agreement are according to actual demand independent research.
In the present invention, differential data mainly refers to RTCM data.
In the present invention, differential data is obtained from the real time differential data broadcast module of network RTD/RTK differential service platform,
User terminal original satellite observation data are obtained from user terminal, observe data using differential data, user terminal original satellite
GNSS precision positioning engine is inputted, real-time resolving goes out the high-precision positioning result of Centimeter Level.
In the present invention, analysis for off-line data can be from the offline difference number of network RTD/RTK differential service platform
According to the offline differential data of acquisition specific time period in management module, while importing the terminal original satellite observation data of user terminal
The original satellite of the correspondence period of memory module record observes data, carries out soft solution using GNSS engine of positioning, obtains soft solution mould
Quasi- positioning result.
In the present invention, real time differential data broadcast module is connect with user terminal, it is therefore an objective to which differential data is input to use
Family end carries out correction and resolves to obtain real-time high-precision positioning solution, and offline differential data management module does not need and user's end
End connection, its effect mainly records, stores history VRS differential data and provides downloading on demand in a certain format, so as to skill
Art personnel carry out ex-post analysis.
In the present invention, the high-precision positioning result of Centimeter Level includes hardware calculation result and software calculation result.
In the present invention, under normal circumstances, by the unified conversion of different-format original satellite observation data of user terminal uploads
For Renix format, and will after conversion Renix data distribution to GNSS engine of positioning and GNSS data quality analysis module.
In the present invention, a variety of GNSS of GNSS precision positioning engine offer are real-time and post-process station-keeping mode, including DGPS/
DGNSS, dynamic RTK, static state RTK, and carry out in real time and the function used needed for post-processing positioning calculation, as RINEX function,
Ephemeris and clock function, precise ephemeris and clock, receiver initial data function, RTCM function resolve function, flow data input
With output function, Carrier Phase Ambiguity Resolution, standard setting, precision positioning, post-processing positioning (resolving), streaming server function, RTK
Server functions etc., by function call, the NMEA that final output software obtains positions file.
In the present invention, positioning result file (NMEA) is exported from NMEA positioning result file storage module to NMEA data solution
Analyse module.
In the present invention, finally by the resolving of the calculation result of GNSS data quality detection module and NMEA data resolution module
As a result it is output to graphical representation and warning function module, completes to show operation.
The present invention intuitively shows the incidence relation between GNSS metadata key index and positioning result, and realizes program certainly
Dynamicization monitoring and early warning function assists technical staff accurately quickly to find orientation problem, finds the impact factor for influencing locating effect
And reason, save human resources and time, high production efficiency.
Differential data is converted to object format and exported to GNSS positioning by the differential data parsing and format converting module
Engine and GNSS data quality analysis module；Original satellite observation data parsing and format converting module are defended terminal is original
Star observation data are converted to object format and export to GNSS engine of positioning and GNSS data quality analysis module.
In the present invention, differential data parsing and format converting module receive what real time differential data broadcast module issued
RTCM data are converted to object format, are distributed to GNSS by RTCM, or history RTCM derived from offline differential data management module
Engine of positioning and GNSS data quality analysis module.
In the present invention, object format generally supports RTCM and Renix.
The differential data and terminal original satellite of the GNSS data quality detection module output object format observe data
To graphical representation and warning function module.
It, can differential data RTCM and terminal to set period using GNSS data quality analysis module in the present invention
Original satellite observes data and carries out quality examination.
In the present invention, the image parameter using GNSS data quality analysis module check includes visible satellite, satellite spatial
The key indexes such as distribution, satellite noise, carrier phase, cycle slip, multipath, epoch percentage of head rice.
In the present invention, quantized result is linearly calculated by pseudorange and phase observations amount, and generate the data of specific format
File.
In the present invention, data file refers to each application module interactive interface file format of internal system, can be json,
Xml or text-only file see programming implementation selection.
The terminal of the NMEA data resolution module output object format solves NMEA positioning result and GNSS engine of positioning firmly
Soft solution NMEA positioning result is to graphical representation and warning function module.
In the present invention, NMEA data resolution module can carry out the filtering of wrong data to NMEA data first, according to NMEA
Format convention CHECKSUM verification is carried out to NMEA data, pass through for verification and the data of effective position parsing UTC be fixed
The position time, longitude and latitude, elevation, alignment quality, HDOP, VDOP, PDOP, difference age, difference station ID, all observed satellites
Number, elevation angle, azimuth, signal-to-noise ratio, positioning calculation uses satellite number list, may finally generate filtered NMEA
Data file or data object pass to graphical representation and warning function module.
In the present invention, differential data RTCM and original observed data generally save as .gz compressed file, can by detection module
It parses above-mentioned key index and does statistics and show.
A kind of analysis method using the GNSS data quality testing analysis system, the method includes following steps
It is rapid:
Step 1: data import:
The differential data of differential data parsing and format converting module reception real time differential data broadcast module output, or from
History differential data derived from line differential data management module exports after differential data is converted to object format to GNSS positioning
Engine and GNSS data quality analysis module；
The original satellite for the different-format that original satellite observation data parsing and format converting module export user terminal
Observation data are converted to object format, and the data after conversion are exported to RTK precision positioning engine and GNSS data quality point
Analyse module；
The NMEA positioning result file storage module of user terminal exports NMEA positioning result file to NMEA data and parses
Module；
Step 2: data processing:
GNSS data quality analysis module carries out matter to differential data and terminal original satellite the observation data of set period
Amount checks, exports result to graphical representation and warning function module；
GNSS engine of positioning observes number by real-time and post-processing station-keeping mode and function, to differential data and original satellite
According to being handled, exports the NMEA that soft solution obtains and position file to NMEA data resolution module；
NMEA data resolution module carries out the filtering and verification of wrong data, needle to the NMEA positioning result file received
Verification is passed through and the data of effective position parse；Result is exported to graphical representation and warning function module；
Step 3: graphical representation:
Graphical representation and warning function module export GNSS data quality analysis module and NMEA data resolution module
Data be based on same time coordinate axis be patterned displaying；
Step 4: analysis:
Differential data, terminal original satellite observation data and the terminal of comparative analysis same period solves NMEA positioning result firmly
Figure, obtain when the locating effect that terminal solves NMEA positioning result firmly is bad, corresponding differential data, terminal original satellite are seen
Index value in measured data occurs deteriorating or be mutated, and it is poor for influencing the reason of terminal solves the locating effect of NMEA positioning result firmly
There are quality problems or terminal original satellite to observe the original of data subscriber terminal for the differential data that divided data service platform is broadcast
Observing data, there are quality problems；
Same group of terminal of comparative analysis solves NMEA positioning result and the soft solution NMEA positioning result of GNSS engine of positioning firmly, passes through
Fixed rate and Accuracy Analysis obtain terminal and firmly solve NMEA positioning result and the soft solution NMEA positioning result of GNSS engine of positioning
Superiority and inferiority, analysis obtain the hardware performance of user terminal；
Step 5: early warning:
Graphical representation alarm corresponding to the alarm rule definition generation that warning function module is set, shows patterned
In data.
In the present invention, graphical representation and warning function module are mainly responsible for the differential data RTCM of access, terminal original
Beginning Satellite Observations, terminal solve NMEA positioning result and soft solution NMEA positioning result this four data of GNSS engine of positioning firmly
Key index is based on same time coordinate axis and does graphical representation, and is tied by the early warning rule of setting to metadata and positioning
The alarm of fruit data "abnormal" situation, as some key index be switched to beyond reservation threshold or positioning states code it is non-differential/non-solid
Mould-fixed.
In the present invention, the differential data being related to before inputting algorithm engine actual analysis can first by differential data parsing and
Format converting module is converted to object format, is under normal circumstances RTCM and Renix.
In the present invention, the differential data RTCM of access, terminal original satellite observation data, terminal solve NMEA positioning result firmly
Should enter first with the soft solution NMEA positioning result of GNSS engine of positioning this four data data processing unit do timestamp alignment,
Data grouping, data that treated are array according to time sequence, and every group of data include 4 class data of synchronization, at data
It manages unit and is distributed to graphical representation and warning function module as an independent module, then by the array after time-sequencing.
In the present invention, successively Dynamic Display is respectively closed according to the corresponding timestamp of array for graphical representation and warning function module
Key index figure, the alarm rule definition further according to setting generate corresponding alarm display in index figure.
In the present invention, it can be solved firmly for patterned differential data RTCM, terminal original satellite observation data, terminal
NMEA positioning result and soft solution this four data of NMEA positioning result of GNSS engine of positioning do the association of following two mode respectively
Analysis.
Analysis one:
Carry out causality analysis based on inputoutput data quality: usual positioning result (terminal solve firmly NMEA positioning result with
GNSS engine of positioning it is soft solution NMEA positioning result) quality depend on input metadata quality (differential data RTCM, end
Hold original satellite observe data), by the differential data RTCM of comparative analysis same period, terminal original satellite observe data and
Terminal solves NMEA positioning result index figure firmly, it is easy to find terminal solve firmly NMEA positioning result locating effect it is bad when, it is right
Which index value for answering differential data RTCM, terminal original satellite to observe epoch in data occurs deteriorating or be mutated.
To conclude that influencing the reason of terminal solves NMEA positioning result locating effect firmly includes:
1. the differential data quality problems that service platform is broadcast；
2. user terminal original observed data quality problems.
Analysis two:
Hard/soft solution result is compared and analyzed based on same group of input data: by the same time series of comparative analysis
Under differential data and original observed data by terminal solve firmly result and GNSS engine of positioning it is soft solve as a result, can be readily recognized
Terminal solves NMEA positioning result firmly and soft that locating effect of solution NMEA positioning result of GNSS engine of positioning is more preferable, evaluation criterion packet
Fixed rate, positioning accuracy are included, the result coordinate that wherein positioning accuracy can calculate continuous a period of time asks precision of inner coincidence to come pair
Than thus as the reference for judging terminal hardware performance.
The present invention solves in the prior art, carries out position to user terminal based on the differential position of RTD/RTK and entangles
During being finally reached high accuracy positioning partially, often having more influence factor causes final terminal that can not position or positioning accurate
Spend it is undesirable, and independent analysis server-side differential data or user terminal Satellite Observations be difficult determine data critical index become
Change the relevance between final positioning result, current there is no any tools or method simple and clear to tie positioning
The relevance visualization of fruit and above-mentioned impact factor is shown, caused by network differential ISP in orientation problem
It generally requires to put into biggish professional human resources and the time carries out data analysis work, the not high problem of production efficiency, building
It supports to parse all kinds of GNSS data quality analysis tools, supports the GNSS data of real-time or offline parsing various dimensions, pass through quantization
The critical index of the final positioning result of analyzing influence, such as satellite visibility, continuity, satellite spatial distribution, carrier phase, week
It jumps, multipath, epoch percentage of head rice etc., each key index and the positioning under sometime sequence is showed with chart visual means dynamic
As a result relevance to intuitively show the incidence relation between GNSS metadata key index and positioning result, and realizes program
Automatically-monitored warning function, assist technical staff accurately quickly find orientation problem, find influence locating effect influence because
Son and reason save human resources and time, high production efficiency.
Claims (10)
1. a kind of GNSS data quality testing analysis system, the system respectively with network RTD/RTK differential service platform and use
Family terminal is equipped with, it is characterised in that: the system comprises the differential datas connecting with network RTD/RTK differential service platform
Parsing and format converting module, connect with user terminal original satellite observation data parse and format converting module and graphically
It shows and warning function module；The differential data parsing and format converting module and original satellite observation data parsing and format
The output end of conversion module is respectively connected to the input terminal of GNSS engine of positioning and GNSS data quality detection module, the GNSS
The output end of engine of positioning is connected to the NMEA data resolution module connecting with user terminal, the GNSS data quality testing mould
The output end of block is connected to the input terminal of graphical representation Yu warning function module, the output end of the NMEA data resolution module
It is connected to the input terminal of graphical representation Yu warning function module.
2. a kind of GNSS data quality testing analysis system according to claim 1, it is characterised in that: the network RTD/
RTK differential service platform includes offline differential data management module and real time differential data broadcast module, the offline difference number
History differential data to differential data parsing and format converting module, the real time differential data, which is exported, according to management module broadcasts mould
Block exports real time differential data to differential data parsing and format converting module.
3. a kind of GNSS data quality testing analysis system according to claim 2, it is characterised in that: the real time differential
Data broadcast module exports real time differential data to user terminal.
4. a kind of GNSS data quality testing analysis system according to claim 1, it is characterised in that: the user terminal
Data memory module and NMEA positioning result file storage module are observed including terminal original satellite.
5. a kind of GNSS data quality testing analysis system according to claim 4, it is characterised in that: the terminal is original
Satellite Observations memory module outlet terminal original satellite observes data to original satellite observation data parsing and format conversion
Module.
6. a kind of GNSS data quality testing analysis system according to claim 4, it is characterised in that: the NMEA positioning
Destination file memory module exports NMEA positioning result file to NMEA data resolution module.
7. a kind of GNSS data quality testing analysis system according to claim 1, it is characterised in that: the differential data
Differential data is converted to object format and exported to GNSS engine of positioning and the inspection of GNSS data quality by parsing and format converting module
Survey module；Terminal original satellite is observed data and is converted to target by the original satellite observation data parsing and format converting module
Format is exported to GNSS engine of positioning and GNSS data quality detection module.
8. a kind of GNSS data quality testing analysis system according to claim 1, it is characterised in that: the GNSS data
Quality detection module exports the differential data of object format and terminal original satellite observes data to graphical representation and early warning function
It can module.
9. a kind of GNSS data quality testing analysis system according to claim 1, it is characterised in that: the NMEA data
The terminal of parsing module output object format solves NMEA positioning result and the soft solution NMEA positioning result of GNSS engine of positioning to figure firmly
Shape displaying and warning function module.
10. a kind of analysis method using GNSS data quality testing analysis system described in one of claim 1~9, special
Sign is: it the described method comprises the following steps:
Step 1: data import:
Differential data parsing and format converting module receive the differential data of real time differential data broadcast module output, or offline poor
History differential data derived from divided data management module exports after differential data is converted to object format to GNSS engine of positioning
With GNSS data quality detection module；
The original satellite observation for the different-format that original satellite observation data parsing and format converting module export user terminal
Data are converted to object format, and the data after conversion are exported to GNSS engine of positioning and GNSS data quality detection module；
The NMEA positioning result file storage module of user terminal exports NMEA positioning result file to NMEA data resolution module；
Step 2: data processing:
GNSS data quality detection module carries out quality inspection to differential data and terminal original satellite the observation data of set period
It looks into, output result to graphical representation and warning function module；
GNSS engine of positioning by real time and post-processing station-keeping mode and function, to differential data and original satellite observe data into
Row processing exports the NMEA that soft solution obtains and positions file to NMEA data resolution module；
NMEA data resolution module carries out the filtering and verification of wrong data to the NMEA positioning result file received, for school
Test by and the data of effective position parsed；Result is exported to graphical representation and warning function module；
Step 3: graphical representation:
The number that graphical representation and warning function module export GNSS data quality detection module and NMEA data resolution module
Displaying is patterned according to based on same time coordinate axis；
Step 4: analysis:
Differential data, terminal original satellite observation data and the terminal of comparative analysis same period solve the figure of NMEA positioning result firmly
Shape show that when the locating effect that terminal solves NMEA positioning result firmly is bad, corresponding differential data, terminal original satellite observe number
Index value in occurs deteriorating or be mutated, and influencing the reason of terminal solves the locating effect of NMEA positioning result firmly is difference number
There are the original observations of quality problems or terminal original satellite observation data subscriber terminal for the differential data broadcast according to service platform
There are quality problems for data；
Same group of terminal of comparative analysis solves NMEA positioning result and the soft solution NMEA positioning result of GNSS engine of positioning firmly, passes through fixation
Rate and Accuracy Analysis obtain the superiority and inferiority that terminal solves NMEA positioning result and the soft solution NMEA positioning result of GNSS engine of positioning firmly,
Analysis obtains the hardware performance of user terminal；
Step 5: early warning:
Graphical representation alarm corresponding to the alarm rule definition generation that warning function module is set, shows in patterned data
In.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN110298536A (en) * | 2019-05-20 | 2019-10-01 | 北京讯腾智慧科技股份有限公司 | Burning line quality of data evaluation method, device and collecting method |
| CN110554412A (en) * | 2019-09-20 | 2019-12-10 | 鞍钢集团矿业有限公司 | GNSS original data quality correction method for slope monitoring |
| CN111308510B (en) * | 2020-01-18 | 2022-02-18 | 北京航天宏图信息技术股份有限公司 | Method and device for checking spatial continuity of remote sensing satellite data |
| CN111447550B (en) * | 2020-03-24 | 2021-09-28 | 广东星舆科技有限公司 | Method and device for monitoring differential quality and computer medium |
| CN112558124A (en) * | 2020-12-01 | 2021-03-26 | 东方红卫星移动通信有限公司 | Data quality analysis system and method of global satellite navigation system |
| CN113325443B (en) * | 2021-05-12 | 2023-12-19 | 中国科学院国家授时中心 | Dynamic visual analysis method for GNSS space signal quality |
| CN113282104B (en) * | 2021-06-03 | 2022-09-06 | 一飞(海南)科技有限公司 | Method for airplane GPS data abnormity detection and abnormity confirmation aiming at formation performance |
| CN114185865A (en) * | 2021-12-13 | 2022-03-15 | 国汽大有时空科技(安庆)有限公司 | Large-scale base station data storage and analysis method and system based on distributed storage |
| CN116068676B (en) * | 2023-03-07 | 2023-06-02 | 南京气象科技创新研究院 | General comprehensive evaluation method for rainfall forecast cross-magnitude |
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