CN107678950A - The precision full-automatic test system of high precision position service software - Google Patents
The precision full-automatic test system of high precision position service software Download PDFInfo
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- CN107678950A CN107678950A CN201710856094.6A CN201710856094A CN107678950A CN 107678950 A CN107678950 A CN 107678950A CN 201710856094 A CN201710856094 A CN 201710856094A CN 107678950 A CN107678950 A CN 107678950A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/36—Preventing errors by testing or debugging software
- G06F11/3668—Software testing
- G06F11/3672—Test management
- G06F11/3688—Test management for test execution, e.g. scheduling of test suites
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/36—Preventing errors by testing or debugging software
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- G06F11/3692—Test management for test results analysis
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Abstract
The invention discloses a kind of precision full-automatic test system of high precision position service software, comprise the steps of：Step 1：All base station real-time streams in receiving area, and parsed and pre-processed；Step 2：Network RTK service accuracy tests and sub-meter grade service accuracy test are carried out respectively；Step 3：Generate accuracy test report.The full-automatic test system of the present invention improves testing efficiency, reduces testing cost, normative testing flow and data statistic analysis.
Description
Technical field
The present invention relates to a kind of test system, the precision full-automatic testing system of particularly a kind of high precision position service software
System.
Background technology
The nineties in last century leads to the appearance of RTK (Real Time Kinematic) technology, GNSS measurement type subscriber computers
Cross while obtain satellite-signal and the differential signal of base station, you can obtained in the time of 1-2 seconds high precision position information (li
Meter level is to sub-meter grade).GNSS system has been promoted to be expanded to high-precision application field significantly, such as engineering survey and setting-out, the earth
Crustal movement monitoring, the deformation monitoring etc. of important building thing.At present, differential technique is from first generation RTK technologies, second generation list
Stand CORS (Continuous Operational Reference System) system, develop into third generation networks CORS systems.
With further improving for GNSS satellite Signal coding system and reaching its maturity for differential technique, CORS systems is real-time at present
Positioning precision has reached grade, and it develops and application prospect has caused the concern of more and more personages outer in the industry.
At present the country real-time high-precision service system based on GNSS CORS positioning precision test with field test,
Based on manual testing, the cost height of software positioning precision test is caused, efficiency is low, the cycle is long, error-prone, data statistic analysis
The problems such as lack of standardization.The country there is no a set of perfect, ripe, systematization full-automatic testing software at present, therefore compel to be essential
A kind of precision full-automatic test system of GNSS CORS high precision position service softwares is wanted to solve the deficiencies in the prior art.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of precision full-automatic testing of high precision position service software
System, to improve testing efficiency, reduce testing cost, normative testing flow and data statistic analysis.
In order to solve the above technical problems, the technical solution adopted in the present invention is：
A kind of precision full-automatic test system of high precision position service software, it is characterised in that comprise the steps of：
Step 1：All base station real-time streams in receiving area, and parsed and pre-processed；
Step 2：Network RTK service accuracy tests and sub-meter grade service accuracy test are carried out respectively；
Step 3：Generate accuracy test report.
Further, the step 1 is specifically, configuration baseline station data source, more base station concurrent datas parse, i.e.,
The data flow real time parsing of RT27/RTCM forms, including the pseudorange observation data of the Big Dipper/GPS/GLONASS systems and carrier wave are seen
Survey data.
Further, in the step 2, network RTK service accuracy tests comprise the steps of,
1.1 selection virtual reference stations, the coordinate of virtual reference station is sent to network RTK service systems, network RTK services
System generates virtual reference station for it and observes data；
1.2 virtual reference stations form Delauy triangles, Virtual reference station network RTK nets, by base station or known
Control point sends base station or known control point coordinates to virtual reference station net, virtual reference station network RTK as test point
Net generation test point observation data；
1.3 utilize base station or known control point real time data and test point observation data, calculating benchmark station or known control
System point real time position, and record the difference of estimate, estimate and base station or known control point accurate coordinate；
1.4 network RTK positioning precision statistical analyses, count calculate precision of inner coincidence and precision of exterior coincidence respectively.
Further, the method that virtual reference station is selected in described 1.1 is, according to sub-zone dividing rule by region-wide stroke
It is divided into some subregions, division rule is to divide according to length or divided according to longitude and latitude difference, chooses 4 tops of subregion
Point, as virtual reference station.
Further, described 1.1 specifically,
Some subregions are divided into by region-wide according to sub-zone dividing rule, division rule is to divide or press according to length
Divided according to longitude and latitude difference；
4 summits of subregion are chosen, as virtual reference station, virtual reference station is selected, calculates the seat of virtual reference station
Mark, and write virtual reference station configuration file .xml；
By virtual reference station coordinates, GPGGA data are incorporated into, are sent to network RTK service softwares；
Network RTK service softwares generation virtual reference station observation data.
Further, in described 1.4 statistics calculate precision of inner coincidence and precision of exterior coincidence use formula for,
Further, in the step 2, sub-meter grade service accuracy test comprises the steps of,
2.1 using the base station in region or known control point as test point, according to base station or known control point position
Subregion where being selected for it, and obtain the differential correctional of subregion；
2.2 base stations or known control point utilize real-time observed data and the differential correctional obtained, real-time calculating benchmark
Stand or the coordinate at known control point, and record the difference of estimate, estimate and base station or known control point accurate coordinate；
2.3 sub-meter grades/RTD positioning precision statistical analyses, count calculate precision of inner coincidence and precision of exterior coincidence respectively.
Further, described 2.1 specifically,
Using the base station in region or known control point as test point, base station or known control point codes co-ordinates are compiled
Enter GPGGA data, send to the sub-meter grade location-based service software broadcast based on grid；
Based on the sub-meter grade location-based service software that grid is broadcast according to base station or it is known control point coordinates for its select institute
In subregion, and by the differential correctional of the subregion, test system is issued.
Further, in described 2.3 statistics calculate precision of inner coincidence and precision of exterior coincidence use formula for,
Further, accuracy test report is generated in the step 3 and includes test point title, the testing time, data volume,
Valid data amount, precision of inner coincidence, precision of exterior coincidence.
The present invention compared with prior art, has advantages below and effect：The full-automatic test system of the present invention can reduce
70% testing cost, more than 80% testing efficiency is improved, can be more than 2000 base stations of country and 20 Duo Ge provinces and cities
Service accuracy test and application is provided.
Brief description of the drawings
Fig. 1 is the schematic diagram of the precision full-automatic test system of the high precision position service software of the present invention.
Fig. 2 is the network RTK service accuracy test flow charts of the present invention.
Fig. 3 is the sub-meter grade service accuracy test flow chart of the present invention.
Embodiment
Below in conjunction with the accompanying drawings and the present invention is described in further detail by embodiment, and following examples are to this hair
Bright explanation and the invention is not limited in following examples.
As illustrated, a kind of precision full-automatic test system of high precision position service software of the present invention, builds software
Framework, researched and developed based on the development languages such as C#, while should also have network RTK service softwares, broadcast based on grid
Sub-meter grade location-based service software, RTK computations, One-Point Location algorithm, it just can smoothly develop the system.Establish test system
4 main modulars：Including base station real time data stream management module, network RTK service accuracy tests module, sub-meter grade position clothes
Business accuracy test module, test report generation module.
The present invention comprises the steps of：
Step 1：All base station real-time streams in receiving area, and parsed and pre-processed；Configuration baseline station number
Parsed according to source, more base station concurrent datas, i.e. the data flow real time parsing of RT27/RTCM forms, including the Big Dipper/GPS/
The pseudorange observation data and carrier observations data of GLONASS systems.
Step 2：Network RTK service accuracy tests and sub-meter grade service accuracy test are carried out respectively；
Network RTK service accuracy tests comprise the steps of：
1.1 selection virtual reference stations, the coordinate of virtual reference station is sent to network RTK service systems, network RTK services
System generates virtual reference station for it and observes data；
Specially：Some subregions are divided into by region-wide according to sub-zone dividing rule, division rule is according to length
Division divides according to longitude and latitude difference, 4 summits of subregion is chosen, as virtual reference station.(such as region is according to 30km*
30km is divided, or according to through the grid partition that the meridional difference is 1 °, 4 summits of each quadrangle are exactly characteristic point, as virtual
Reference station).
4 summits of subregion are chosen, as virtual reference station, virtual reference station is selected, calculates the seat of virtual reference station
Mark, and write virtual reference station configuration file .xml；
By virtual reference station coordinates, GPGGA data are incorporated into, are sent to network RTK service softwares；
Network RTK service softwares generation virtual reference station observation data.
1.2 virtual reference stations form Delauy triangles, Virtual reference station network RTK nets, using base station as survey
Pilot, benchmark station coordinates is sent to virtual reference station net, virtual reference station network RTK net generation test point observation data；
Specially：Utilize virtual reference station coordinates and virtual reference station data, composition virtual reference station network RTK services system
System；
Using base station as test station, base station codes co-ordinates are incorporated into GPGGA data, are sent to virtual reference station net
Network RTK service systems；
Virtual reference station network RTK service systems are that test station generates test station observation data；
1.3 using base station real time data and test point observation data, calculating benchmark station real time position, and records estimation
The difference of value, estimate and base station accurate coordinate；
Specially：Test station data carry out RTK data calculations with base station real time data；
The result (estimate) of the real-time RTK positioning of base station is recorded, writes xml document；
Record the result (estimate) and the difference of base station accurate coordinate of the real-time RTK positioning of base station, write-in xml texts
Part.
1.4 network RTK positioning precision statistical analyses, count calculate precision of inner coincidence and precision of exterior coincidence respectively.
The formula of specific statistical accuracy is as follows：
Sub-meter grade services accuracy test and comprised the steps of,
2.1 using the base station in region as test point, the subregion according to where benchmark station location for its selection, and obtains
The differential correctional of subregion；
Specially：Using the base station in region as test point, base station codes co-ordinates are incorporated into GPGGA data, sent
To the sub-meter grade location-based service software broadcast based on grid；
Place subregion is selected for it according to benchmark station coordinates based on the sub-meter grade location-based service software that grid is broadcast, and will
The differential correctional of the subregion, issues test system.
2.2 base stations are remembered using real-time observed data and the differential correctional obtained, the coordinate at real-time calculating benchmark station
Record the difference of estimate, estimate and base station accurate coordinate；
Specially：Using base station real-time observed data and differential correctional, One-Point Location is done；
The real-time One-Point Location result of base station is recorded, writes xml document；
The real-time One-Point Location result of base station and the difference of base station accurate coordinate are recorded, writes xml document
2.3 sub-meter grades/RTD positioning precision statistical analyses, count calculate precision of inner coincidence and precision of exterior coincidence respectively.
The formula of statistical accuracy is as follows：
Step 3：Generate accuracy test report.
1) network RTK positioning precisions test report generates, including test point title, the testing time, data volume, valid data
The contents such as amount, precision of inner coincidence, precision of exterior coincidence.2) sub-meter grade/RTD positioning precisions test report generation, including test are called the roll
Claim, the testing time, data volume, valid data amount, the content such as precision of inner coincidence, precision of exterior coincidence.Report printing：Including printing lattice
Formula setting etc..
Above content described in this specification is only illustration made for the present invention.Technology belonging to the present invention
The technical staff in field can make various modifications or supplement to described specific embodiment or using similar mode
Substitute, content without departing from description of the invention or surmount scope defined in the claims, this all should be belonged to
The protection domain of invention.
Claims (10)
1. a kind of precision full-automatic test system of high precision position service software, it is characterised in that comprise the steps of：
Step 1：All base station real-time streams in receiving area, and parsed and pre-processed；
Step 2：Network RTK service accuracy tests and sub-meter grade service accuracy test are carried out respectively；
Step 3：Generate accuracy test report.
2. according to the precision full-automatic test system of the high precision position service software described in claim 1, it is characterised in that：Institute
Step 1 is stated specifically, configuration baseline station data source, the parsing of more base station concurrent datas, the i.e. data of RT27/RTCM forms
Real time parsing is flowed, includes the pseudorange observation data and carrier observations data of the Big Dipper/GPS/GLONASS systems.
3. according to the precision full-automatic test system of the high precision position service software described in claim 1, it is characterised in that：Institute
To state in step 2, network RTK service accuracy tests comprise the steps of,
1.1 selection virtual reference stations, the coordinate of virtual reference station is sent to network RTK service systems, network RTK service systems
Virtual reference station, which is generated, for it observes data；
1.2 virtual reference stations form Delauy triangles, Virtual reference station network RTK nets, by base station or known control
Point is used as test point, and base station or known control point coordinates are sent to virtual reference station net, virtual reference station network RTK net lifes
Data are observed into test point；
1.3 utilize base station or known control point real time data and test point observation data, calculating benchmark station or known control point
Real time position, and record the difference of estimate, estimate and base station or known control point accurate coordinate；
1.4 network RTK positioning precision statistical analyses, count calculate precision of inner coincidence and precision of exterior coincidence respectively.
4. according to the precision full-automatic test system of the high precision position service software described in claim 3, it is characterised in that：Institute
State and the method for virtual reference station is selected in 1.1 to be divided into some subregions by region-wide according to sub-zone dividing rule, division
Rule is to divide according to length or divided according to longitude and latitude difference, 4 summits of subregion is chosen, as virtual reference station.
5. according to the precision full-automatic test system of the high precision position service software described in claim 3, it is characterised in that：Institute
State 1.1 specifically,
Some subregions are divided into by region-wide according to sub-zone dividing rule, division rule is to be divided according to length or according to warp
Latitude difference divides；
4 summits of subregion are chosen, as virtual reference station, select virtual reference station, calculate the coordinate of virtual reference station, and
Write virtual reference station configuration file .xml；
By virtual reference station coordinates, GPGGA data are incorporated into, are sent to network RTK service softwares；
Network RTK service softwares generation virtual reference station observation data.
6. according to the precision full-automatic test system of the high precision position service software described in claim 3, it is characterised in that：Institute
In stating 1.4 statistics calculate precision of inner coincidence and precision of exterior coincidence use formula for,
7. according to the precision full-automatic test system of the high precision position service software described in claim 1, it is characterised in that：Institute
To state in step 2, sub-meter grade service accuracy test comprises the steps of,
2.1 using the base station in region or known control point as test point, is it according to base station or known control point position
Subregion where selection, and obtain the differential correctional of subregion；
2.2 base stations or known control point using real-time observed data and the differential correctional obtained, real-time calculating benchmark station or
The coordinate at known control point, and record the difference of estimate, estimate and base station or known control point accurate coordinate；
2.3 sub-meter grade/RTD positioning precision statistical analyses, count calculate precision of inner coincidence and precision of exterior coincidence respectively.
8. according to the precision full-automatic test system of the high precision position service software described in claim 7, it is characterised in that：Institute
State 2.1 specifically,
Using the base station in region or known control point as test point, base station or known control point codes co-ordinates are incorporated into
GPGGA data, send to the sub-meter grade location-based service software broadcast based on grid；
Based on the sub-meter grade location-based service software that grid is broadcast according to where benchmark station coordinates for its selection subregion, and by the son
The differential correctional in region, issues test system.
9. according to the precision full-automatic test system of the high precision position service software described in claim 7, it is characterised in that：Institute
In stating 2.3 statistics calculate precision of inner coincidence and precision of exterior coincidence use formula for,
10. according to the precision full-automatic test system of the high precision position service software described in claim 1, it is characterised in that：
Accuracy test report is generated in the step 3 and includes test point title, the testing time, data volume, valid data amount, is inside met
Precision, precision of exterior coincidence.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108844526A (en) * | 2018-03-22 | 2018-11-20 | 成都纵横融合科技有限公司 | Unmanned plane aerial photography universe is exempted from as prosecutor method |
| CN110095797A (en) * | 2019-05-28 | 2019-08-06 | 北京讯腾智慧科技股份有限公司 | A kind of grid precise positioning method of servicing and system based on satellite navigation system |
| CN110488325A (en) * | 2019-08-02 | 2019-11-22 | 广州市中海达测绘仪器有限公司 | Precision automated detection method and storage medium based on GNSS receiver |
| CN110488332A (en) * | 2018-05-14 | 2019-11-22 | 广州市中海达测绘仪器有限公司 | Method and device based on technology of network RTK |
| CN110673170A (en) * | 2019-09-17 | 2020-01-10 | 闽江学院 | Method and terminal for testing dynamic single-point positioning accuracy |
| CN111103603A (en) * | 2018-10-29 | 2020-05-05 | 千寻位置网络有限公司 | Cloud positioning method and device based on CORS system, positioning system and cloud server |
| CN111158027A (en) * | 2018-11-07 | 2020-05-15 | 千寻位置网络有限公司 | Multi-terminal synchronization-based network RTK service testing method and device and testing system |
| CN111447550A (en) * | 2020-03-24 | 2020-07-24 | 广东星舆科技有限公司 | Method and device for monitoring differential quality and computer medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2444822A3 (en) * | 2010-10-25 | 2013-08-21 | Broadcom Corporation | Method and system for computing universal hybrid navigation information for a GNSS enabled device |
| CN105929424A (en) * | 2015-11-16 | 2016-09-07 | 中国测绘科学研究院 | BDS/GPS high-accuracy positioning method |
| CN106855631A (en) * | 2016-12-02 | 2017-06-16 | 中国人民解放军63891部队 | A kind of relay type GNSS dynamic measurement precisions test appraisal procedure |
-
2017
- 2017-09-21 CN CN201710856094.6A patent/CN107678950A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2444822A3 (en) * | 2010-10-25 | 2013-08-21 | Broadcom Corporation | Method and system for computing universal hybrid navigation information for a GNSS enabled device |
| CN105929424A (en) * | 2015-11-16 | 2016-09-07 | 中国测绘科学研究院 | BDS/GPS high-accuracy positioning method |
| CN106855631A (en) * | 2016-12-02 | 2017-06-16 | 中国人民解放军63891部队 | A kind of relay type GNSS dynamic measurement precisions test appraisal procedure |
Non-Patent Citations (3)
| Title |
|---|
| 丁健: "CORS***稳定性与精度测试研究", 《中国优秀硕士学位论文全文数据库 基础科学辑》 * |
| 刘天恒等: "基于北斗地基增强***RTD精度分析", 《第七届中国卫星导航学术年会论文集》 * |
| 雷雨等: "JXCORS***RTK性能测试与分析", 《测绘与空间地理信息》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108844526A (en) * | 2018-03-22 | 2018-11-20 | 成都纵横融合科技有限公司 | Unmanned plane aerial photography universe is exempted from as prosecutor method |
| CN110488332A (en) * | 2018-05-14 | 2019-11-22 | 广州市中海达测绘仪器有限公司 | Method and device based on technology of network RTK |
| CN110488332B (en) * | 2018-05-14 | 2021-09-10 | 广州市中海达测绘仪器有限公司 | Positioning information processing method and device based on network RTK technology |
| CN111103603A (en) * | 2018-10-29 | 2020-05-05 | 千寻位置网络有限公司 | Cloud positioning method and device based on CORS system, positioning system and cloud server |
| CN111103603B (en) * | 2018-10-29 | 2023-01-06 | 千寻位置网络有限公司 | Cloud positioning method and device based on CORS system, positioning system and cloud server |
| CN111158027A (en) * | 2018-11-07 | 2020-05-15 | 千寻位置网络有限公司 | Multi-terminal synchronization-based network RTK service testing method and device and testing system |
| CN110095797A (en) * | 2019-05-28 | 2019-08-06 | 北京讯腾智慧科技股份有限公司 | A kind of grid precise positioning method of servicing and system based on satellite navigation system |
| CN110488325A (en) * | 2019-08-02 | 2019-11-22 | 广州市中海达测绘仪器有限公司 | Precision automated detection method and storage medium based on GNSS receiver |
| CN110488325B (en) * | 2019-08-02 | 2023-12-22 | 广州市中海达测绘仪器有限公司 | Precision automatic detection method based on GNSS receiver and storage medium |
| CN110673170A (en) * | 2019-09-17 | 2020-01-10 | 闽江学院 | Method and terminal for testing dynamic single-point positioning accuracy |
| CN111447550A (en) * | 2020-03-24 | 2020-07-24 | 广东星舆科技有限公司 | Method and device for monitoring differential quality and computer medium |
| 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 |
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Application publication date: 20180209 |