CN107544077A - 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 differential data parsing be connected with network RTD/RTK differential service platforms and format converting module, the original satellite that is connected 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 positionings engine and GNSS data quality detection module, GNSS engine of positioning is connected to the NMEA data resolution modules being connected with user terminal, GNSS data quality detection module is connected to graphical representation and warning function module, and NMEA data resolution modules are connected to graphical representation and warning function module.It is of the invention intuitively to show GNSS metadata and the relation of positioning result, automatic accurate quick discovery orientation problem, factor of influence and reason and early warning, efficiency high.
Description
Technical field
It is more particularly to a kind of intuitively to show GNSS metadata key the invention belongs to the technical field of the transmission of digital information
Incidence relation between index and positioning result is to facilitate the factor of influence 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 technology
Network RTK（Real-time kinematic, carrier phase difference technology）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 experiment, developing stage.Network RTK
The final locating effect of differential position（Mainly fixed rate, positioning precision etc.）It is related to many influence factors, including difference
（RTCM）The quality of data, user terminal original observed data, terminal hardware/algorithm performance, communication network quality etc., one of them
Or multiple problematic it can all cause final locating effect undesirable.
Meanwhile RTKlib, TEQC etc. increase income precision positioning algorithm and data analysis tool, main function is based on input
Original observed data resolves generation NMEA positioning files, or support pair using function model analog hardware terminal set in advance
GNSS files carry out different-format between conversion, editor and to some critical index（Multipath, cycle slip, signal to noise ratio etc.）
Quantitative analysis is done in parsing, and this can not intuitively show differential data RTCM, terminal Satellite Observations and terminal positioning result
（NMEA）Between relevance and qualitative analysis.
In the prior art, positional deviation correction is carried out to user terminal based on RTD/RTK differential position and is finally reached height
During precision positions, often having more influence factor causes that final terminal can not position or positioning precision is undesirable, than
The RTCM qualities of data broadcast such as differential data service end are bad or the user terminal original satellite observation quality of data is bad,
Or be terminal soft hardware performance etc., and individually Analysis Service end differential data or user terminal Satellite Observations are difficult true
The relevance that fixed number changes between final positioning result according to critical index, currently not any instrument or method energy
Enough simple and clear relevance visualizations by positioning result and above-mentioned factor of influence are shown, so that network differential service provides
Person generally requires to put into larger professional human resources in orientation problem and the time carries out data analysis work, and production efficiency is not
It is high.
The content of the invention
Present invention solves the technical problem that it is, in the prior art, based on RTD/RTK differential position 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 precision are undesirable, and individually Analysis Service end differential data or user terminal Satellite Observations are difficult to determine that data are closed
The relevance that key index changes between final positioning result, currently not any instrument or method can be intuitively bright
The visualization of the relevance of positioning result and above-mentioned factor of influence is shown, caused by network differential ISP exist
Generally require to put into larger professional human resources during 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 solution adopted in the present invention is a kind of GNSS data quality testing analysis system, the system respectively with
Network RTD/RTK differential services platform and user terminal are equipped with, and the system includes putting down with network RTD/RTK differential services
The differential data parsing of platform connection and format converting module, the original satellite that be connected with user terminal are observed data and parsed and form
Modular converter and graphical representation and warning function module；The differential data parsing and format converting module and original satellite are seen
The output end for surveying data parsing and format converting module is respectively connecting to GNSS engine of positioning and GNSS data quality detection module
Input, the output end of the GNSS engine of positioning is connected to the NMEA data resolution modules being connected with user terminal, described
The output end of GNSS data quality detection module is connected to the input of graphical representation and warning function module, the NMEA numbers
The input of graphical representation and warning function module is connected to according to the output end of parsing module.
Preferably, the network RTD/RTK differential services 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 form 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 files
Memory module.
Preferably, terminal original satellite observation data memory module outlet terminal original satellite observes data to original
Satellite Observations parse and format converting module.
Preferably, the NMEA positioning results file storage module exports NMEA positioning results file to NMEA data and parsed
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 eventually
End original satellite observation data are converted to object format and exported 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
Data are surveyed to graphical representation and warning function module.
Preferably, the terminal of the NMEA data resolution modules output object format solves NMEA positioning results firmly and GNSS determines
The position soft solution NMEA positioning results of engine are to graphical representation and warning function module.
A kind of analysis method of GNSS data quality testing analysis system described in use, methods described include following step
Suddenly：
Step 1：Data import：
Differential data parses and format converting module receives the differential data of real time differential data broadcast module output, or offline poor
History differential data derived from divided data management module, exported after differential data is converted into object format to GNSS engine of positioning
With GNSS data quality analysis 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 by the data output after conversion to RTK precision positionings engine and GNSS data quality analysis mould
Block；
The NMEA positioning results file storage module of user terminal exports NMEA positioning results file to NMEA data resolution modules；
Step 2：Data processing：
GNSS data quality analysis module carries out quality inspection to differential data and terminal original satellite the observation data of set period
Look into, output result to graphical representation and warning function module；
GNSS engine of positioning to differential data and original satellite observation data by with post processing station-keeping mode and function, entering in real time
Row processing, export the NMEA that soft solution obtains and position file to NMEA data resolution modules；
NMEA data resolution modules carry out the filtering and verification of wrong data to the NMEA positioning results file received, for school
The data tested by and effectively positioned are parsed；Output result is to graphical representation and warning function module；
Step 3：Graphical representation：
The number that graphical representation exports with warning function module to GNSS data quality analysis module and NMEA data resolution modules
Displaying is patterned according to based on same time coordinate axle；
Step 4：Analysis：
Differential data, terminal original satellite observation data and the terminal of comparative analysis same period solve the figure of NMEA positioning results firmly
Shape, draw when the locating effect that terminal solves NMEA positioning results firmly is bad, corresponding differential data, terminal original satellite observation number
Index value in occurs deteriorating or is mutated, and it is difference number to influence the reason for terminal solves the locating effect of NMEA positioning results firmly
Quality problems, or the original observation of terminal original satellite observation data subscriber terminal be present in the differential data broadcast according to service platform
Quality problems be present in data；
Same group of terminal of comparative analysis solves NMEA positioning results and the soft solution NMEA positioning results of GNSS engine of positioning firmly, passes through fixation
Rate and Accuracy Analysis obtain the quality that terminal solves NMEA positioning results and the soft solution NMEA positioning results 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, is illustrated in patterned data
In.
The invention provides the GNSS data quality testing analysis system and its analysis method of a kind of optimization, structure supports solution
All kinds of GNSS data quality analysis instruments are analysed, supports to parse the GNSS data of various dimensions in real time or offline, passes through quantitative analysis shadow
The critical index of final positioning result is rung, as satellite visibility, continuity, satellite spatial distribution, carrier phase, cycle slip are more
Footpath, epoch percentage of head rice etc., each key index and positioning result under sometime sequence are showed with chart visual means dynamic
Relevance, so as to intuitively show the incidence relation between GNSS metadata key index and positioning result, and realize that program is automatic
Change monitoring and early warning function, assist technical staff accurately quickly find orientation problem, find influence locating effect factor of influence and
Reason, save human resources and time, production efficiency is high.
Brief description of the drawings
Fig. 1 is the GNSS data analysis process of the present invention；
Fig. 2 is the workflow signal of the graphical representation based on lock in time sequence and warning function module in the present invention
Figure；
In Fig. 1 and Fig. 2, differential data RTCM testing results, including but not limited to satellite visibility, continuity, satellite are 1. represented
Spatial distribution, carrier phase, cycle slip, multipath, epoch percentage of head rice, 2. represent terminal original satellite observation Data Detection result, bag
Include but be not limited to satellite visibility, the distribution of continuity, satellite spatial, satellite noise, carrier phase, cycle slip, multipath, epoch it is complete
Rate, 3. represent the true NMEA file analyses result of user, including but not limited to changes in coordinates, positioning states, use satellite, difference
Age index, the NMEA file analysis results that 4. expression RTK precisions algorithm engine resolves, including but not limited to changes in coordinates, determine
Position state, use satellite, difference age index.
Embodiment
The present invention is described in further detail with reference to embodiment, but protection scope of the present invention is not limited to
This.
As illustrated, the present invention relates to a kind of GNSS data quality testing analysis system, the system respectively with network
RTD/RTK differential services platform and user terminal are equipped with, and the system includes connecting with network RTD/RTK differential services platform
Connect differential data parsing and format converting module, be connected with user terminal original satellite observation data parse and form change
Module and graphical representation and warning function module；The differential data parsing and format converting module and original satellite observation number
The defeated of GNSS engine of positioning and GNSS data quality detection module is respectively connecting 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 modules being connected with user terminal, the GNSS
The output end of data quality checking module is connected to the input of graphical representation and warning function module, the NMEA data solution
The output end of analysis module is connected to the input of graphical representation and warning function module.
The network RTD/RTK differential services platform includes 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
State real time differential data broadcast module and export 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 results file storage mould
Block.
The terminal original satellite observation data memory module outlet terminal original satellite is observed data to original satellite and seen
Survey data parsing and format converting module.
The NMEA positioning results file storage module exports NMEA positioning results file to NMEA data resolution modules.
In the present invention, GNSS data mainly includes differential data, the user's end that network RTD/RTK differential service platforms are broadcast
Hold original satellite observation data, positioning result file（NMEA）.
In the present invention, network RTD/RTK differential service platforms refer to the satellite of the physical standard station reception 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 differences are that algorithm model and parameter selection are different, and RTD refers to that pseudorange is poor
Point（Generally sub-meter grade）, RTK refers to carrier phase difference（Typically it can reach Centimeter Level）.Above-mentioned VRS technologies are earliest by U.S.
Tian Bao company of state proposes that other similar technologies also have major-minor station technology, the FKP technologies that Switzerland comes card, generally, 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, the real time differential data broadcast module of differential data from network RTD/RTK differential service platforms obtains,
User terminal original satellite observation data are obtained from user terminal, and data are observed using differential data, user terminal original satellite
GNSS precision positioning engines are inputted, real-time resolving goes out the high-precision positioning result of Centimeter Level.
In the present invention, the analysis for off-line data can be from the offline difference number of network RTD/RTK differential service platforms
According to the offline differential data of acquisition specific time period in management module, while import the terminal original satellite observation data of user terminal
The original satellite observation data of the corresponding period of memory module record, carry out soft solution using GNSS engine of positioning, draw soft solution mould
Intend positioning result.
In the present invention, real time differential data broadcast module is connected with user terminal, it is therefore an objective to which differential data is input into use
Family end carries out correction and resolved to obtain real-time high-precision positioning solution, and offline differential data management module and need not be whole with user
End connection, its effect mainly records, stores history VRS differential datas and provide download 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, generally, by the unified conversion of different-format original satellite observation data of user terminal uploads
For Renix forms, and will after conversion Renix data distributions to GNSS engine of positioning and GNSS data quality analysis module.
In the present invention, a variety of GNSS of GNSS precision positionings engine offer are real-time and post-process station-keeping mode, including DGPS/
DGNSS, dynamic RTK, static RTK, and carry out in real time and the function used needed for post processing positioning calculation, as RINEX functions,
Ephemeris and clock function, precise ephemeris and clock, receiver initial data function, RTCM functions, resolve function, flow data input
With output function, Carrier Phase Ambiguity Resolution, standard setting, precision positioning, post processing positioning（Resolve）, 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）Exported from NMEA positioning result file storage modules to NMEA data solutions
Analyse module.
In the present invention, the most resolving of the calculation result of GNSS data quality detection module and NMEA data resolution modules at last
As a result graphical representation and warning function module are output to, completes displaying operation.
The incidence relation directly perceived showed between GNSS metadata key index and positioning result of the invention, and realize program certainly
Dynamicization monitoring and early warning function, assist technical staff accurately quickly to find orientation problem, find the factor of influence for influenceing locating effect
And reason, save human resources and time, production efficiency is high.
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 exported 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 observation data of the GNSS data quality detection module output object format
To graphical representation and warning function module.
, can be to the differential data RTCM and terminal of set period using GNSS data quality analysis module in the present invention
Original satellite observation data carry out quality examination.
In the present invention, include visible satellite, satellite spatial using the image parameter of GNSS data quality analysis module check
The key index 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 realization Scheme Choice.
The terminal of the NMEA data resolution modules output object format solves NMEA positioning results and GNSS engine of positioning firmly
Soft solution NMEA positioning results are to graphical representation and warning function module.
In the present invention, NMEA data resolution modules can carry out the filtering of wrong data to NMEA data first, according to NMEA
Format convention to NMEA data carry out CHECKSUM verifications, for verification pass through and effectively position data parsing UTC determine
Position time, longitude and latitude, elevation, alignment quality, HDOP, VDOP, PDOP, difference age, difference station ID, all observed satellites
Numbering, elevation angle, azimuth, signal to noise ratio, positioning calculation uses satellite number list, may finally generate the NMEA after filtering
Data file or data object pass to graphical representation and warning function module.
In the present invention, differential data RTCM and original observed data typically save as .gz compressed files, can by detection module
Parse above-mentioned key index and do statistics displaying.
A kind of analysis method of GNSS data quality testing analysis system described in use, methods described include following step
Suddenly：
Step 1：Data import：
Differential data parses and format converting module receives the differential data of real time differential data broadcast module output, or offline poor
History differential data derived from divided data management module, exported after differential data is converted into object format to GNSS engine of positioning
With GNSS data quality analysis 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 by the data output after conversion to RTK precision positionings engine and GNSS data quality analysis mould
Block；
The NMEA positioning results file storage module of user terminal exports NMEA positioning results file to NMEA data resolution modules；
Step 2：Data processing：
GNSS data quality analysis module carries out quality inspection to differential data and terminal original satellite the observation data of set period
Look into, output result to graphical representation and warning function module；
GNSS engine of positioning to differential data and original satellite observation data by with post processing station-keeping mode and function, entering in real time
Row processing, export the NMEA that soft solution obtains and position file to NMEA data resolution modules；
NMEA data resolution modules carry out the filtering and verification of wrong data to the NMEA positioning results file received, for school
The data tested by and effectively positioned are parsed；Output result is to graphical representation and warning function module；
Step 3：Graphical representation：
The number that graphical representation exports with warning function module to GNSS data quality analysis module and NMEA data resolution modules
Displaying is patterned according to based on same time coordinate axle；
Step 4：Analysis：
Differential data, terminal original satellite observation data and the terminal of comparative analysis same period solve the figure of NMEA positioning results firmly
Shape, draw when the locating effect that terminal solves NMEA positioning results firmly is bad, corresponding differential data, terminal original satellite observation number
Index value in occurs deteriorating or is mutated, and it is difference number to influence the reason for terminal solves the locating effect of NMEA positioning results firmly
Quality problems, or the original observation of terminal original satellite observation data subscriber terminal be present in the differential data broadcast according to service platform
Quality problems be present in data；
Same group of terminal of comparative analysis solves NMEA positioning results and the soft solution NMEA positioning results of GNSS engine of positioning firmly, passes through fixation
Rate and Accuracy Analysis obtain the quality that terminal solves NMEA positioning results and the soft solution NMEA positioning results 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, is illustrated in patterned data
In.
In the present invention, graphical representation is mainly responsible for the differential data RTCM of access, terminal is former with warning function module
Beginning Satellite Observations, terminal solve NMEA positioning results and soft this four data of solution NMEA positioning results of GNSS engine of positioning firmly
Key index does graphical representation based on same time coordinate axle, and metadata and positioning are tied by the early warning rule of setting
Fruit data "abnormal" situation is alarmed, as some key index switch to beyond reservation threshold or positioning states code it is non-differential/non-solid
Mould-fixed.
In the present invention, the differential data that is related to before algorithm engine actual analysis is inputted can first by differential data parsing and
Format converting module is converted to object format, is generally RTCM and Renix.
In the present invention, the differential data RTCM of access, terminal original satellite observation data, terminal solve NMEA positioning results firmly
With the soft solution NMEA positioning results of GNSS engine of positioning this four data should be done first into data processing unit timestamp alignment,
Packet, data after processing are array according to time sequence, 4 class data of the every group of packet containing synchronization, at data
The unit module independent as one is managed, then the array after time-sequencing is distributed to graphical representation and warning function module.
In the present invention, graphical representation and warning function module are respectively closed according to the corresponding timestamp of array successively Dynamic Display
Key index figure, the corresponding alarm of alarm rule definition generation further according to setting are illustrated in index figure.
In the present invention, patterned differential data RTCM, terminal original satellite observation data, terminal can be directed to and solved firmly
NMEA positioning results and the soft solution NMEA positioning results of GNSS engine of positioning this four data do the association of following two patterns respectively
Analysis.
Analysis one：
Causality analysis is carried out based on inputoutput data quality：Usual positioning result（Terminal solves NMEA positioning results and GNSS firmly
The soft solution NMEA positioning results of engine of positioning）Quality depend on input metadata quality（Differential data RTCM, terminal are former
Beginning Satellite Observations）, data and terminal are observed by the differential data RTCM of comparative analysis same period, terminal original satellite
Hard solution NMEA positioning result index figures, it is easy to find terminal solve firmly NMEA positioning result locating effects it is bad when, it is corresponding poor
Which index value of epoch occurs deteriorating or is mutated in divided data RTCM, terminal original satellite observation data.
So as to draw a conclusion：Influenceing the reason for terminal solves NMEA positioning result locating effects 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 analyzed based on same group of input data：By under the same time series of comparative analysis
Differential data and original observed data solve result and the soft solution result of GNSS engine of positioning firmly by terminal, can be readily recognized terminal
Hard solution NMEA positioning results and soft that locating effect of solution NMEA positioning results of GNSS engine of positioning are more preferable, and evaluation criterion includes solid
Determine rate, positioning precision, wherein positioning precision can calculate the result coordinate of continuous a period of time and seek precision of inner coincidence to contrast, from
And as the reference for judging terminal hardware performance.
The present invention solves in the prior art, and carrying out position to user terminal based on RTD/RTK differential position entangles
During being finally reached high accuracy positioning partially, often having more influence factor causes final terminal can not position or positioning accurate
Spend undesirable, and individually Analysis Service end differential data or user terminal Satellite Observations are difficult to determine that data critical index becomes
Change the relevance between final positioning result, currently not any instrument or method simple and clear can be tied positioning
The relevance visualization of fruit and above-mentioned factor of influence is shown, caused by network differential ISP in orientation problem
Generally require to put into larger professional human resources and the problem of the time carries out data analysis work, and production efficiency is not high, structure
Support to parse all kinds of GNSS data quality analysis instruments, support 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
Jump, multipath, epoch percentage of head rice etc., each key index and positioning under sometime sequence are showed with chart visual means dynamic
As a result relevance, so as to intuitively show the incidence relation between GNSS metadata key index and positioning result, and program is realized
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, production efficiency is high.
Claims (10)
1. a kind of GNSS data quality testing analysis system, the system respectively with network RTD/RTK differential services platform and use
Family terminal is equipped with, it is characterised in that：The system includes the differential data being connected with network RTD/RTK differential service platforms
Parsing and format converting module, be connected with user terminal original satellite observation data parse and format converting module and graphically
Displaying and warning function module；The differential data parsing and format converting module and original satellite observation data parsing and form
The output end of modular converter is respectively connecting to GNSS engine of positioning and the input of GNSS data quality detection module, the GNSS
The output end of engine of positioning is connected to the NMEA data resolution modules being connected with user terminal, the GNSS data quality testing mould
The output end of block is connected to the input of graphical representation and warning function module, the output end of the NMEA data resolution modules
It is connected to the input of graphical representation and warning function module.
A kind of 2. GNSS data quality testing analysis system according to claim 1, it is characterised in that：The network RTD/
RTK differential services 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.
A kind of 3. 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.
A kind of 4. 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 modules are observed including terminal original satellite.
A kind of 5. 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 form conversion
Module.
A kind of 6. 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 results file to NMEA data resolution modules.
A kind of 7. 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 GNSS data quality point by parsing and format converting module
Analyse module；Terminal original satellite observation data are converted to target by the original satellite observation data parsing and format converting module
Form is exported to GNSS engine of positioning and GNSS data quality analysis module.
A kind of 8. GNSS data quality testing analysis system according to claim 1, it is characterised in that：The GNSS data
The differential data and terminal original satellite of quality detection module output object format observe data to graphical representation and early warning work(
Can module.
A kind of 9. 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 results and the soft solution NMEA positioning results of GNSS engine of positioning to figure firmly
Shape displaying and warning function module.
10. a kind of analysis method of GNSS data quality testing analysis system using described in one of claim 1~9, it is special
Sign is：It the described method comprises the following steps：
Step 1：Data import：
Differential data parses and format converting module receives the differential data of real time differential data broadcast module output, or offline poor
History differential data derived from divided data management module, exported after differential data is converted into object format to GNSS engine of positioning
With GNSS data quality analysis 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 by the data output after conversion to RTK precision positionings engine and GNSS data quality analysis mould
Block；
The NMEA positioning results file storage module of user terminal exports NMEA positioning results file to NMEA data resolution modules；
Step 2：Data processing：
GNSS data quality analysis module carries out quality inspection to differential data and terminal original satellite the observation data of set period
Look into, output result to graphical representation and warning function module；
GNSS engine of positioning to differential data and original satellite observation data by with post processing station-keeping mode and function, entering in real time
Row processing, export the NMEA that soft solution obtains and position file to NMEA data resolution modules；
NMEA data resolution modules carry out the filtering and verification of wrong data to the NMEA positioning results file received, for school
The data tested by and effectively positioned are parsed；Output result is to graphical representation and warning function module；
Step 3：Graphical representation：
The number that graphical representation exports with warning function module to GNSS data quality analysis module and NMEA data resolution modules
Displaying is patterned according to based on same time coordinate axle；
Step 4：Analysis：
Differential data, terminal original satellite observation data and the terminal of comparative analysis same period solve the figure of NMEA positioning results firmly
Shape, draw when the locating effect that terminal solves NMEA positioning results firmly is bad, corresponding differential data, terminal original satellite observation number
Index value in occurs deteriorating or is mutated, and it is difference number to influence the reason for terminal solves the locating effect of NMEA positioning results firmly
Quality problems, or the original observation of terminal original satellite observation data subscriber terminal be present in the differential data broadcast according to service platform
Quality problems be present in data；
Same group of terminal of comparative analysis solves NMEA positioning results and the soft solution NMEA positioning results of GNSS engine of positioning firmly, passes through fixation
Rate and Accuracy Analysis obtain the quality that terminal solves NMEA positioning results and the soft solution NMEA positioning results 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, is illustrated in patterned data
In.
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| CN201710771813.4A CN107544077B (en) | 2017-08-31 | 2017-08-31 | A kind of GNSS data quality testing analysis system and its analysis method |
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| CN108508459A (en) * | 2018-04-04 | 2018-09-07 | 千寻位置网络有限公司 | Troubleshooting method and device, the positioning system of tuning on-line |
| CN109799521A (en) * | 2019-03-14 | 2019-05-24 | 苏州工业园区测绘地理信息有限公司 | A kind of tri- subtractive combination cycle-slip detection and repair method of BDS/GPS |
| 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 |
| CN110632624A (en) * | 2018-06-25 | 2019-12-31 | 中移物联网有限公司 | Method, device, equipment and storage medium for determining quality of observation quantity of satellite |
| CN111308510A (en) * | 2020-01-18 | 2020-06-19 | 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 |
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| 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 |
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