CN111142135A - GPS differential positioning precision manual measurement system and implementation method thereof - Google Patents
GPS differential positioning precision manual measurement system and implementation method thereof Download PDFInfo
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- CN111142135A CN111142135A CN201911166370.1A CN201911166370A CN111142135A CN 111142135 A CN111142135 A CN 111142135A CN 201911166370 A CN201911166370 A CN 201911166370A CN 111142135 A CN111142135 A CN 111142135A
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- 238000005259 measurement Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000013507 mapping Methods 0.000 claims abstract description 23
- 238000012360 testing method Methods 0.000 claims abstract description 22
- 238000004891 communication Methods 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 4
- 230000000007 visual effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 1
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- 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]
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- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
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- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The invention discloses a GPS differential positioning precision manual measurement system and a realization method thereof, comprising an RTK host, the RTK host is connected with the surveying and mapping receiving antenna through a feedback line, the RTK host is connected with the 4G module through a serial port to receive the base station differential signal, the RTK host is connected with a power supply through a power line to realize power supply of equipment, the RTK host communicates with an upper computer through a 232-USB serial port to send data, the surveying and mapping receiving antenna is arranged on the manual positioning platform, the invention solves the problems that the GPS is difficult to measure manually, the moving distance cannot be measured and the moving consistency cannot be measured, compared with the problems existing in the prior art, the invention automatically analyzes the test result by a program, and the test result is visual, directly perceived and clear, and accomplishes the removal of survey and drawing receiving antenna through the structure platform to realize moving distance detection and reciprocal detection of uniformity.
Description
Technical Field
The invention relates to the field of surveying and mapping, in particular to a GPS differential positioning precision manual measurement system and an implementation method thereof.
Background
The existing precision measurement method is basically characterized in that longitude and latitude coordinates sent by a GPS are read, the measurement precision is manually compared after the longitude and latitude coordinates are manually converted into plane coordinates, but no method is used for verifying the precision and consistency of the moving distance, and the measurement precision can be operated by skilled personnel, so that the operation is complicated.
Disclosure of Invention
In order to solve the technical problems, the technical scheme provided by the invention is as follows: the utility model provides a GPS difference positioning accuracy manual measurement system, includes the RTK host computer, the RTK host computer passes through the feedback line and is connected with survey and drawing receiving antenna, the RTK host computer is connected with the 4G module through the serial ports and receives the basic station difference signal, the RTK host computer passes through the power cord and is connected the realization equipment power supply with the power, the RTK host computer passes through 232 USB serial ports and host computer communication sending data that change, survey and drawing receiving antenna sets up on manual positioning platform.
Manual positioning platform is including survey and drawing receiving antenna, antenna boom and removal slip table, the fixed survey and drawing receiving antenna that sets up in antenna boom both ends, it is formed with vertical scaffold weldment by mutually perpendicular's horizontal support to remove the slip table, the fixed support that sets up in horizontal support both ends, be equipped with the slide bar between the support, the slide bar runs through the fixed hasp of antenna boom and fixed antenna boom lateral wall in proper order.
As an improvement, the cross section of the support is L-shaped, and the support is fixedly connected with the transverse support through bolts.
As an improvement, a reinforcing cross brace is arranged between the longitudinal supports on the two sides of the movable sliding table.
As an improvement, the fixed lock catch is provided with an adjustable handle.
As an improvement, the antenna bracket and the sliding rod are arranged perpendicular to each other.
As an improvement, the implementation method comprises the following steps:
(1) connecting the system according to the connection mode, then opening a serial port according to the serial port number of the connection in the upper computer, receiving the positioning data of the differential module through the serial port, and analyzing the longitude, the latitude, the altitude and the course angle according to the protocol;
(2) converting the longitude and latitude into a northeast coordinate system according to a formula of converting the longitude and latitude into a plane coordinate system, and simultaneously taking the average value of the front 10 groups of data after difference as an origin;
(2-1) WGS84 (Earth coordinate System) rotating earth center rectangular coordinate System
For one point in space, the geodetic coordinate system (L, B, H) is transformed into a rectangular coordinate system (X, Y, Z), where L (longitude), B (latitude), H (altitude):
in the above formula:
n is the curvature radius of the prime circle of the shop;
a. b and e are respectively a long half shaft, a short half shaft and a first eccentricity of the geodetic coordinate system corresponding to the reference ellipsoid; the major half axis a is 6378137 +/-2 m, the minor half axis b is 6356.7523142km, e2＝0.00669437999013；
(2-2) the earth center rectangular coordinate system is converted into the northeast coordinate system
Wherein (L0, B0, H0) in the formula is longitude and latitude and altitude of a reference zero point of a northeast coordinate system, and (L, B, H) is longitude and latitude and altitude of the current position, and X isRight angle、YRight angle、ZRight angleThe coordinate of a space rectangular coordinate system of the current point is taken as the coordinate of the space rectangular coordinate system of the current point;
(3) and finally, calculating the distances from the east (X axis) and the north (Y axis) of the origin (X0, Y0) from the received coordinate data in real time, displaying the coordinates on a coordinate system in the upper computer, and synchronously updating the distances from the origin.
(4) During testing, firstly, the mapping receiving antenna in the electric positioning platform is moved to the leftmost end to be kept still, and data acquisition is started.
(5) When the precision test is carried out, the surveying and mapping receiving antenna in the electric positioning platform is moved to the leftmost end and is kept still, whether a data display point exceeds a scale mark of 2cm from the original point in a coordinate system displayed by software of an upper computer is observed, the product which exceeds the scale mark is unqualified, and the next test is carried out after the product is qualified;
(6) when a moving distance test is carried out, moving a mapping receiving antenna in the electric positioning platform to the rightmost end and keeping the mapping receiving antenna still, observing whether a data display point is 100cm +/-0.5 cm away from an original point in a coordinate system displayed by upper computer software, judging that a product is unqualified when the distance exceeds 0.5cm, and carrying out the next test after the product is qualified;
(7) and (3) testing consistency: the surveying and mapping receiving antenna in the electric positioning platform is moved from the leftmost end to the rightmost end, stops at the leftmost end after reciprocating for more than or equal to 10 times, and watches the coordinate system displayed by the upper computer software to display whether a display point exceeds a scale mark of 2cm or not, and the product which exceeds the scale mark is unqualified.
After adopting the structure, the invention has the following advantages:
the invention solves the problems that the precision of a manual GPS is difficult to measure, and the moving distance and the moving consistency can not be measured, compared with the problems in the background technology, the invention automatically analyzes the test result through a program, the test result is visual and clear, and the movement of the surveying and mapping receiving antenna is completed through a structural platform, thereby realizing the detection of the moving distance and the detection of the reciprocating consistency.
Drawings
FIG. 1 is a schematic diagram of a GPS differential positioning accuracy manual measurement system and a system structure of an implementation method thereof according to the present invention;
FIG. 2 is a schematic diagram of a manual measurement system for GPS differential positioning accuracy and a manual positioning platform structure in an implementation method thereof.
FIG. 3 is a schematic diagram of an upper computer coordinate system in the GPS differential positioning precision manual measurement system and the implementation method thereof.
As shown in the figure: 1. survey and drawing receiving antenna, 2, antenna boom, 3, slide bar, 4, remove the slip table, 401, vertical support, 402, horizontal support, 403, strengthen the stull, 5, fixed hasp, 6, support.
Detailed Description
With reference to the accompanying drawings 1-3, the GPS differential positioning precision manual measurement system comprises an RTK host, wherein the RTK host is connected with a surveying and mapping receiving antenna through a feedback line, the RTK host is connected with a 4G module through a serial port to receive a base station differential signal, the RTK host is connected with a power supply through a power line to realize equipment power supply, the RTK host transmits data through communication between a 232-turn USB serial port and an upper computer, and the surveying and mapping receiving antenna is arranged on a manual positioning platform.
What this embodiment preferred embodiment is, manual location platform includes survey and drawing receiving antenna 1, antenna boom 2 and removes slip table 4, 2 fixed survey and drawing receiving antenna 1 that sets up in both ends of antenna boom, it is formed by mutually perpendicular's horizontal support 402 and vertical support 401 welding to remove slip table 4, the fixed support 6 that sets up in horizontal support 402 both ends, be equipped with slide bar 3 between the support 6, slide bar 3 runs through antenna boom 2 and the fixed hasp 5 of fixed antenna boom 2 lateral wall in proper order.
As a preferred embodiment of this embodiment, the support 4 has an L-shaped cross section, and the support 6 is fixedly connected with the transverse bracket 402 through a bolt.
As a preferred embodiment of the present embodiment, a reinforcing cross brace 403 is disposed between the longitudinal supports 401 on both sides of the moving sliding table 4.
As a preferred embodiment of the present embodiment, the fixing lock 5 is provided with an adjustable handle.
As a preferred embodiment of the present embodiment, the antenna bracket 2 and the sliding rod 3 are disposed perpendicular to each other.
As a preferred embodiment of the present embodiment, the implementation method comprises the following steps:
(1) connecting the system according to the connection mode, then opening a serial port according to the serial port number of the connection in the upper computer, receiving the positioning data of the differential module through the serial port, and analyzing the longitude, the latitude, the altitude and the course angle according to the protocol;
(2) converting the longitude and latitude into a northeast coordinate system according to a formula of converting the longitude and latitude into a plane coordinate system, and simultaneously taking the average value of the front 10 groups of data after difference as an origin;
(2-1) WGS84 (Earth coordinate System) rotating earth center rectangular coordinate System
For one point in space, the geodetic coordinate system (L, B, H) is transformed into a rectangular coordinate system (X, Y, Z), where L (longitude), B (latitude), H (altitude):
in the above formula:
n is the curvature radius of the prime circle of the shop;
a. b and e are respectively a long half shaft, a short half shaft and a first eccentricity of the geodetic coordinate system corresponding to the reference ellipsoid; the major half axis a is 6378137 +/-2 m, the minor half axis b is 6356.7523142km, e2＝0.00669437999013；
(2-2) the earth center rectangular coordinate system is converted into the northeast coordinate system
Wherein (L0, B0, H0) in the formula is longitude and latitude and altitude of a reference zero point of a northeast coordinate system, and (L, B, H) is longitude and latitude and altitude of the current position, and X isRight angle、YRight angle、ZRight angleThe coordinate of a space rectangular coordinate system of the current point is taken as the coordinate of the space rectangular coordinate system of the current point;
(3) and finally, calculating the distances from the east (X axis) and the north (Y axis) of the origin (X0, Y0) from the received coordinate data in real time, displaying the coordinates on a coordinate system in the upper computer, and synchronously updating the distances from the origin.
(4) During testing, firstly, the mapping receiving antenna in the electric positioning platform is moved to the leftmost end to be kept still, and data acquisition is started.
(5) When the precision test is carried out, the surveying and mapping receiving antenna in the electric positioning platform is moved to the leftmost end and is kept still, whether a data display point exceeds a scale mark of 2cm from the original point in a coordinate system displayed by software of an upper computer is observed, the product which exceeds the scale mark is unqualified, and the next test is carried out after the product is qualified;
(6) when a moving distance test is carried out, moving a mapping receiving antenna in the electric positioning platform to the rightmost end and keeping the mapping receiving antenna still, observing whether a data display point is 100cm +/-0.5 cm away from an original point in a coordinate system displayed by upper computer software, judging that a product is unqualified when the distance exceeds 0.5cm, and carrying out the next test after the product is qualified;
(7) and (3) testing consistency: the surveying and mapping receiving antenna in the electric positioning platform is moved from the leftmost end to the rightmost end, stops at the leftmost end after reciprocating for more than or equal to 10 times, and watches the coordinate system displayed by the upper computer software to display whether a display point exceeds a scale mark of 2cm or not, and the product which exceeds the scale mark is unqualified.
In the specific implementation of the invention, as shown in fig. 1, the surveying and mapping receiving antenna is connected with the movable sliding table through the antenna support, the movable sliding table is connected with the ground, the surveying and mapping antenna is driven to move by moving the antenna support, the moving mode is manual, and the total stroke of the antenna support is 1000mm +/-0.1 mm.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The utility model provides a GPS difference positioning accuracy manual measurement system which characterized in that: including the RTK host computer, the RTK host computer passes through the feedback line and is connected with survey and drawing receiving antenna (1), the RTK host computer passes through the serial ports and is connected with the 4G module and receives the basic station differential signal, the RTK host computer passes through the power cord and is connected the realization equipment power supply with the power, the RTK host computer passes through 232 commentaries on classics USB serial ports and host computer communication send data, survey and drawing receiving antenna (1) sets up on manual positioning platform.
2. The GPS differential positioning accuracy manual measurement system according to claim 2, wherein: manual location platform is including surveying and drawing receiving antenna (1), antenna boom (2) and removal slip table (4), antenna boom (2) both ends are fixed to be set up survey and drawing receiving antenna (1), it forms with vertical support (401) welding by mutually perpendicular's horizontal support (402) to remove slip table (4), horizontal support (402) both ends are fixed to be set up support (6), be equipped with slide bar (3) between support (6), slide bar (3) run through fixed hasp (5) of antenna boom (2) and fixed antenna boom (2) lateral wall in proper order.
3. The GPS differential positioning accuracy manual measurement system according to claim 2, wherein: the cross section of the support (4) is L-shaped, and the support (6) is fixedly connected with the transverse support (402) through bolts.
4. The GPS differential positioning accuracy manual measurement system according to claim 2, wherein: and a reinforcing cross brace (403) is arranged between the longitudinal supports (401) at the two sides of the movable sliding table (4).
5. The GPS differential positioning accuracy manual measurement system according to claim 2, wherein: the fixed lock catch (5) is provided with an adjustable handle.
6. The GPS differential positioning accuracy manual measurement system according to claim 2, wherein: the antenna bracket (2) and the sliding rod (3) are arranged perpendicular to each other.
7. The method for implementing the GPS differential positioning accuracy manual measurement system according to claim 1, characterized by comprising the following steps:
(1) connecting the system according to the connection mode, then opening a serial port according to the serial port number of the connection in the upper computer, receiving the positioning data of the differential module through the serial port, and analyzing the longitude, the latitude, the altitude and the course angle according to the protocol;
(2) converting the longitude and latitude into a northeast coordinate system according to a formula of converting the longitude and latitude into a plane coordinate system, and simultaneously taking the average value of the front 10 groups of data after difference as an origin;
(2-1) WGS84 (Earth coordinate System) rotating earth center rectangular coordinate System
For one point in space, the geodetic coordinate system (L, B, H) is transformed into a rectangular coordinate system (X, Y, Z), where L (longitude), B (latitude), H (altitude):
in the above formula:
n is the curvature radius of the prime circle of the shop;
a. b and e are respectively a long half shaft, a short half shaft and a first eccentricity of the geodetic coordinate system corresponding to the reference ellipsoid; the major half axis a is 6378137 +/-2 m, the minor half axis b is 6356.7523142km, e2＝0.00669437999013；
(2-2) the earth center rectangular coordinate system is converted into the northeast coordinate system
Wherein (L0, B0, H0) in the formula is longitude and latitude and altitude of a reference zero point of a northeast coordinate system, and (L, B, H) is longitude and latitude and altitude of the current position, and X isRight angle、YRight angle、ZRight angleIs the space of the current pointCoordinates of a rectangular coordinate system;
(3) and finally, calculating the distances from the east (X axis) and the north (Y axis) of the origin (X0, Y0) from the received coordinate data in real time, displaying the coordinates on a coordinate system in the upper computer, and synchronously updating the distances from the origin.
(4) During testing, firstly, the mapping receiving antenna in the electric positioning platform is moved to the leftmost end to be kept still, and data acquisition is started.
(5) When the precision test is carried out, the surveying and mapping receiving antenna in the electric positioning platform is moved to the leftmost end and is kept still, whether a data display point exceeds a scale mark of 2cm from the original point in a coordinate system displayed by software of an upper computer is observed, the product which exceeds the scale mark is unqualified, and the next test is carried out after the product is qualified;
(6) when a moving distance test is carried out, moving a mapping receiving antenna in the electric positioning platform to the rightmost end and keeping the mapping receiving antenna still, observing whether a data display point is 100cm +/-0.5 cm away from an original point in a coordinate system displayed by upper computer software, judging that a product is unqualified when the distance exceeds 0.5cm, and carrying out the next test after the product is qualified;
(7) and (3) testing consistency: the surveying and mapping receiving antenna in the electric positioning platform is moved from the leftmost end to the rightmost end, stops at the leftmost end after reciprocating for more than or equal to 10 times, and watches the coordinate system displayed by the upper computer software to display whether a display point exceeds a scale mark of 2cm or not, and the product which exceeds the scale mark is unqualified.
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| CN201911166370.1A CN111142135A (en) | 2019-11-25 | 2019-11-25 | GPS differential positioning precision manual measurement system and implementation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112904094A (en) * | 2021-02-04 | 2021-06-04 | 中国人民解放军国防科技大学 | Orofacial antenna external field test method based on unmanned aerial vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1048321A (en) * | 1996-08-06 | 1998-02-20 | Furuno Electric Co Ltd | Apparatus and method for surveying real time kinematic gps |
| CN104614736A (en) * | 2015-02-03 | 2015-05-13 | 芜湖航飞科技股份有限公司 | Calibration method of GPS receiver |
| CN106483535A (en) * | 2016-11-30 | 2017-03-08 | 华南农业大学 | A kind of Dual-antenna receiver position and attitude precision testing platform and method of testing |
| CN206470405U (en) * | 2017-01-26 | 2017-09-05 | 安徽天盛智能科技有限公司 | A kind of high-precision RTK satellite surveying and mappings system for being used to measure Target space position coordinate |
-
2019
- 2019-11-25 CN CN201911166370.1A patent/CN111142135A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1048321A (en) * | 1996-08-06 | 1998-02-20 | Furuno Electric Co Ltd | Apparatus and method for surveying real time kinematic gps |
| CN104614736A (en) * | 2015-02-03 | 2015-05-13 | 芜湖航飞科技股份有限公司 | Calibration method of GPS receiver |
| CN106483535A (en) * | 2016-11-30 | 2017-03-08 | 华南农业大学 | A kind of Dual-antenna receiver position and attitude precision testing platform and method of testing |
| CN206470405U (en) * | 2017-01-26 | 2017-09-05 | 安徽天盛智能科技有限公司 | A kind of high-precision RTK satellite surveying and mappings system for being used to measure Target space position coordinate |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112904094A (en) * | 2021-02-04 | 2021-06-04 | 中国人民解放军国防科技大学 | Orofacial antenna external field test method based on unmanned aerial vehicle |
| CN112904094B (en) * | 2021-02-04 | 2022-08-23 | 中国人民解放军国防科技大学 | Orofacial antenna external field test method based on unmanned aerial vehicle |
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