CN108919318A - A kind of high-precision locating method based on GPS differential system - Google Patents
A kind of high-precision locating method based on GPS differential system Download PDFInfo
- Publication number
- CN108919318A CN108919318A CN201810457790.4A CN201810457790A CN108919318A CN 108919318 A CN108919318 A CN 108919318A CN 201810457790 A CN201810457790 A CN 201810457790A CN 108919318 A CN108919318 A CN 108919318A
- Authority
- CN
- China
- Prior art keywords
- group
- base station
- differential corrections
- data
- corrections value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000012937 correction Methods 0.000 claims abstract description 46
- 230000000694 effects Effects 0.000 abstract description 4
- 238000012935 Averaging Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/42—Determining position
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/40—Correcting position, velocity or attitude
- G01S19/41—Differential correction, e.g. DGPS [differential GPS]
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The invention discloses a kind of high-precision locating methods based on GPS differential system, include the following steps：S1, original Contrast's data are obtained：User is sent to base station by the original coordinates data that GPS navigator measures N group place；S2, accurate correlation data is obtained：Base station is observed N group place after obtaining N group original coordinates data, calculates the coordinate data of N group place benchmark；S3, differential corrections value is calculated：Base station obtains N group differential corrections value by calculating separately N group original coordinates data and N group reference coordinate data；S4, accurate differential corrections value is obtained：By calculating N group differential corrections value, the differential corrections value for asking its more accurate feeds back to user for base station.The differential corrections value that the present invention obtains is more accurate, reduces certain error by the method for being averaging differential corrections value, and large effect caused by avoiding because of the larger calculating to user of differential corrections value error ensure that user calculates the precision of three-dimensional coordinate.
Description
Technical field
The present invention relates to GPS field of measuring technique, specially a kind of high-precision locating method based on GPS differential system.
Background technique
Differential GPS is to acquire pseudorange correction amount or position first with the differential GPS standard station of known accurate three-dimensional coordinate
Correction amount, then this correction amount is sent to user (GPS navigator) in real time or afterwards, the measurement data of user is repaired
Just, to improve GPS location precision.
The positioning accuracy that usually list GPS system provides is an advantage over 25 meters, and is to obtain higher positioning accuracy, we are usually
Using Differential GPS Technology, in the prior art, user is sent to GPS standard station and obtains difference after only passing through one three-dimensional coordinate of measurement
Point correction value, and obtained differential corrections value precision is unsatisfactory, due to there is orbit error, clocking error, SA to influence,
The initial data of atmospheric effect, multipath effect and other errors, the measured three-dimensional coordinate numerical value of user may be by larger shadow
It rings, so not accurate by the differential corrections value that base station is calculated, depending merely on the differential corrections value for calculating and once obtaining may
Error is larger, and user may be subjected to misleading so that the data obtained are unsatisfactory.
Summary of the invention
The purpose of the present invention is to provide a kind of high-precision locating methods based on GPS differential system, to solve above-mentioned back
The problem of being proposed in scape technology.
To achieve the above object, the present invention provides the following technical solutions：
A kind of high-precision locating method based on GPS differential system, includes the following steps：
S1, original Contrast's data are obtained：User is sent to by the original coordinates data that GPS navigator measures N group place
Base station；
S2, accurate correlation data is obtained：Base station is observed N group place after obtaining N group original coordinates data, calculates
The coordinate data of N group place benchmark；
S3, differential corrections value is calculated：Base station is obtained by calculating separately N group original coordinates data and N group reference coordinate data
To N group differential corrections value；
S4, accurate differential corrections value is obtained：Ask its more accurate by calculating N group differential corrections value in base station
Differential corrections value feeds back to user.
Preferably, user is no more than 100km at a distance from base station.
Preferably, the N group in S2, S3 and S4 is four groups.
Preferably, answer different in the N group place that user is measured in S2.
It preferably, the place that base station is surveyed and drawn in S3 should be identical as the place surveyed and drawn in S2.
Compared with prior art, the beneficial effects of the invention are as follows：
The differential corrections value that the present invention obtains is more accurate, and user only passes through the difference that one group of three-dimensional coordinate of measurement obtains and repairs
Positive value may be influenced to cause error larger by extraneous factor, and calculate multiple differential corrections by measuring multiple three-dimensional coordinates
Value, carries out calculating to differential corrections value and finds out average value, reduces certain error by the method for being averaging differential corrections value,
Large effect caused by avoiding because of the larger calculating to user of differential corrections value error ensure that user calculates three-dimensional coordinate
Precision.
Detailed description of the invention
Fig. 1 is the flow diagram of the method for the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, the present invention provides a kind of technical solution：
Embodiment one：
A kind of high-precision locating method based on GPS differential system, includes the following steps：
S1, original Contrast's data are obtained：User is sent to by the original coordinates data that GPS navigator measures N group place
Base station；
User measures the original coordinates data of four groups of different locations by GPS navigator, for example, A1 (27,15,3), B1
(18,24,5), C1 (6,33,4) and D1 (10,26,2), and four original coordinates data are sent to away from oneself 100km
Base station.
S2, accurate correlation data is obtained：Base station is observed N group place after obtaining N group original coordinates data, calculates
The coordinate data of N group place benchmark；
Four groups of place benchmark are calculated by being observed after four groups of original coordinates data in S1 to four groups of places in base station
Coordinate data be A2 (26,14,3), B2 (18,23,5), C2 (8,36,3) and D2 (9,28,3).
S3, differential corrections value is calculated：Base station is obtained by calculating separately N group original coordinates data and N group reference coordinate data
To N group differential corrections value；
Base station carries out calculating four groups by the four groups of original coordinates data obtained in S1 and S2 and four groups of reference coordinate data
Differential corrections value is named as A3, B3, C3 and D3：
A3 (26-27,14-15,3-0) is calculated by A1 and A2, obtains A3 (- 1, -1,0)
B3 (18-18,23-24,5-0) is calculated by B1 and B2, obtains B3 (0, -1,0)
C3 (8-6,36-33,3-4) is calculated by C1 and C2, obtains C3 (2,3, -1)
D3 (9-10,28-26,3-2) is calculated by D1 and D2, obtains D3 (- 1,2,1)
S4, accurate differential corrections value is obtained：Ask its more accurate by calculating N group differential corrections value in base station
Differential corrections value feeds back to user.
Base station passes through the average value for calculating four groups of differential corrections values,
(- 1+0+2-1)/4, (- 1-1+3+2)/4, (0+0-1+1)/4
User is fed back to obtain more accurate differential corrections value and be named as M1 (0,0.75,0).
Embodiment two：
A kind of high-precision locating method based on GPS differential system, includes the following steps：
S1, original Contrast's data are obtained：User is sent to by the original coordinates data that GPS navigator measures N group place
Base station；
User measures the original coordinates data of four groups of different locations by GPS navigator, for example, A4 (27,25,2), B4
(5,6,6), C4 (43,27,4) and D4 (66,55,3), and four original coordinates data are sent to away from oneself 100km
Base station.
S2, accurate correlation data is obtained：Base station is observed N group place after obtaining N group original coordinates data, calculates
The coordinate data of N group place benchmark；
Four groups of place benchmark are calculated by being observed after four groups of original coordinates data in S1 to four groups of places in base station
Coordinate data be A5 (25,23,3), B5 (5,5,6), C5 (42,24,4) and D5 (63,53,4).
S3, differential corrections value is calculated：Base station is obtained by calculating separately N group original coordinates data and N group reference coordinate data
To N group differential corrections value；
Base station carries out calculating four groups by the four groups of original coordinates data obtained in S1 and S2 and four groups of reference coordinate data
Differential corrections value is named as A6, B6, C6 and D6：
A6 (25-27,23-25,3-2) is calculated by A4 and A5, obtains A6 (- 2, -2,1)
B6 (5-5,5-6,6-6) is calculated by B4 and B5, obtains B6 (0, -1,0)
C6 (42-43,24-27,4-4) is calculated by C4 and C5, obtains C6 (- 1, -3,0)
D6 (63-66,53-55,4-3) is calculated by D4 and D5, obtains D6 (- 3, -2,1)
S4, accurate differential corrections value is obtained：Ask its more accurate by calculating N group differential corrections value in base station
Differential corrections value feeds back to user.
Base station passes through the average value for calculating four groups of differential corrections values,
(- 2+0-1-3)/4, (- 2-1-3-2)/4, (1+0+0+1)/4
User is fed back to obtain more accurate differential corrections value and be named as M2 (- 1.5, -2,0.5).
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of high-precision locating method based on GPS differential system, which is characterized in that include the following steps：
S1, original Contrast's data are obtained：User is sent to base station by the original coordinates data that GPS navigator measures N group place；
S2, accurate correlation data is obtained：Base station is observed N group place after obtaining N group original coordinates data, calculates N group
The coordinate data of place benchmark；
S3, differential corrections value is calculated：Base station obtains N by calculating separately N group original coordinates data and N group reference coordinate data
Group differential corrections value；
S4, accurate differential corrections value is obtained：Its more accurate difference is sought by calculating N group differential corrections value in base station
Correction value feeds back to user.
2. a kind of high-precision locating method based on GPS differential system according to claim 1, it is characterised in that：User
With at a distance from base station be no more than 100km.
3. a kind of high-precision locating method based on GPS differential system according to claim 1, it is characterised in that：S2,S3
It is four groups with the N group in S4.
4. a kind of high-precision locating method based on GPS differential system according to claim 1, it is characterised in that：In S2
Answer different in the N group place that user is measured.
5. a kind of high-precision locating method based on GPS differential system according to claim 1, it is characterised in that：In S3
It the place that base station is surveyed and drawn should be identical as the place surveyed and drawn in S2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810457790.4A CN108919318A (en) | 2018-05-14 | 2018-05-14 | A kind of high-precision locating method based on GPS differential system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810457790.4A CN108919318A (en) | 2018-05-14 | 2018-05-14 | A kind of high-precision locating method based on GPS differential system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108919318A true CN108919318A (en) | 2018-11-30 |
Family
ID=64402423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810457790.4A Pending CN108919318A (en) | 2018-05-14 | 2018-05-14 | A kind of high-precision locating method based on GPS differential system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108919318A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109828295A (en) * | 2019-03-07 | 2019-05-31 | 辽宁北斗卫星导航平台有限公司 | A kind of Differential positioning method, system, terminal and medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020032039A1 (en) * | 2000-09-12 | 2002-03-14 | Nec Corporation | Portable telephone, GPS and bluetooth integrated compound terminal and controlling method therefor |
| CN101470190A (en) * | 2007-12-26 | 2009-07-01 | 中国科学院声学研究所 | Integrated positioning device and method for water surface carrier |
| CN102158801A (en) * | 2011-02-15 | 2011-08-17 | 广州市动景计算机科技有限公司 | Mobile terminal user-oriented accurate location based information service method and device |
| CN105722023A (en) * | 2014-12-04 | 2016-06-29 | 中国电信股份有限公司 | Equipment for positioning of mobile terminal, mobile terminal, system, and method |
| CN105929424A (en) * | 2015-11-16 | 2016-09-07 | 中国测绘科学研究院 | BDS/GPS high-accuracy positioning method |
| CN107490796A (en) * | 2017-07-17 | 2017-12-19 | 深圳市时空导航科技有限公司 | A kind of method and device of single station difference GNSS positioning |
-
2018
- 2018-05-14 CN CN201810457790.4A patent/CN108919318A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020032039A1 (en) * | 2000-09-12 | 2002-03-14 | Nec Corporation | Portable telephone, GPS and bluetooth integrated compound terminal and controlling method therefor |
| CN101470190A (en) * | 2007-12-26 | 2009-07-01 | 中国科学院声学研究所 | Integrated positioning device and method for water surface carrier |
| CN102158801A (en) * | 2011-02-15 | 2011-08-17 | 广州市动景计算机科技有限公司 | Mobile terminal user-oriented accurate location based information service method and device |
| CN105722023A (en) * | 2014-12-04 | 2016-06-29 | 中国电信股份有限公司 | Equipment for positioning of mobile terminal, mobile terminal, system, and method |
| CN105929424A (en) * | 2015-11-16 | 2016-09-07 | 中国测绘科学研究院 | BDS/GPS high-accuracy positioning method |
| CN107490796A (en) * | 2017-07-17 | 2017-12-19 | 深圳市时空导航科技有限公司 | A kind of method and device of single station difference GNSS positioning |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109828295A (en) * | 2019-03-07 | 2019-05-31 | 辽宁北斗卫星导航平台有限公司 | A kind of Differential positioning method, system, terminal and medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105891860B (en) | A kind of GNSS regions pseudo range difference enhancing localization method based on error separate pattern | |
| CN104215977B (en) | Precision assessment method and precision assessment system based on satellite navigation system | |
| CN108490473A (en) | A kind of the unmanned plane enhancing localization method and system of fusion GNSS and UWB | |
| CN105301617B (en) | A kind of integer ambiguity validity check method in satellite navigation system | |
| CN106842236B (en) | GNSS receiver cycle-slip detection and repair processing unit | |
| CN105929424A (en) | BDS/GPS high-accuracy positioning method | |
| CN105867108A (en) | National standard time remote recurrence method | |
| CN104680008A (en) | Multi-reference station-based network RTK (Real Time Kinematic) area atmospheric error modeling method | |
| CN102998681A (en) | High-frequency clock error estimation method of satellite navigation system | |
| CN110018507A (en) | It is a kind of based on make between constellation difference combination accurate one-point positioning method and system | |
| CN109633701A (en) | GNSS timing receiver system delay calibration method based on punctual lab resources | |
| CN107976702A (en) | A kind of position correcting method based on CORS, positioning terminal and alignment system | |
| CN109633703B (en) | Beidou navigation passive positioning method for responding to sheltered scene | |
| CN111913197A (en) | Application method of GPS _ BDS dual-mode time service technology in power distribution network automation | |
| CN105549046B (en) | GNSS receiver cycle-slip detection and repair processing method | |
| CN112394383B (en) | Satellite and 5G base station combined positioning method and device | |
| CN113568020A (en) | Satellite navigation positioning error correction method and device considering hardware inter-frequency difference | |
| CN105738927A (en) | Fusion positioning navigation time service calculating model building method considering satellite navigation intersystem deviation | |
| CN107490796B (en) | A kind of method and device of single station difference GNSS positioning | |
| CN105204047B (en) | A kind of detecting and repairing method of the single rough error of observed quantity in satellite navigation system | |
| CN108919318A (en) | A kind of high-precision locating method based on GPS differential system | |
| CN104166985B (en) | A kind of star sensor scaling method based on region segmentation | |
| CN117289312A (en) | Smart phone pseudo-range differential positioning and weighting method based on optimal satellite subset | |
| CN110058274B (en) | Method and system for monitoring time difference between satellite navigation systems | |
| CN115166796A (en) | Baseline double-difference ambiguity fixed solution verification method, device and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181130 |