CN113157683A - Positioning and deviation rectifying method and system - Google Patents
Positioning and deviation rectifying method and system Download PDFInfo
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- CN113157683A CN113157683A CN202110516380.4A CN202110516380A CN113157683A CN 113157683 A CN113157683 A CN 113157683A CN 202110516380 A CN202110516380 A CN 202110516380A CN 113157683 A CN113157683 A CN 113157683A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/21—Design, administration or maintenance of databases
- G06F16/215—Improving data quality; Data cleansing, e.g. de-duplication, removing invalid entries or correcting typographical errors
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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
- G01S19/42—Determining position
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/29—Geographical information databases
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Abstract
The invention belongs to the technical field of Internet GIS (geographic information System), and provides a positioning and deviation rectifying method and a system, wherein the method comprises the following steps: collecting satellite positioning coordinates; nonlinear rectification: performing deviation correction processing on the satellite positioning coordinate by adopting a nonlinear function to obtain a nonlinear deviation correction coordinate; position marking: marking the nonlinear deviation-rectifying coordinate on an electronic map; the system comprises: the acquisition module is used for acquiring satellite positioning coordinates; the nonlinear deviation rectifying module is used for rectifying the satellite positioning coordinate by adopting a nonlinear function to obtain a nonlinear deviation rectifying coordinate; and the position marking module is used for marking the nonlinear deviation-rectifying coordinates on the electronic map. The method and the system for positioning and correcting the deviation save cost, improve the accuracy of the position coordinates after the deviation correction and avoid the problems of data safety and privacy.
Description
Technical Field
The invention relates to the technical field of Internet GIS, in particular to a positioning and deviation rectifying method and system.
Background
In internet GIS applications, the coordinates of satellite positioning need to be accurately identified on a map to visually display the current position. Since most map manufacturers (google maps, Baidu maps, Gauder maps, Tencent maps, Aliskiu maps, etc.) use the Mars coordinate technology in China, if the coordinates are directly marked on the map, the problem that the position on the map deviates randomly (non-linearly) relative to the actual position occurs. Therefore, the deviation between the position on the map and the actual position can be reduced by performing the correction processing on the spatial geographic coordinates, so that the accuracy of the display position on the map is improved.
The existing positioning and deviation rectifying method mainly comprises the following modes:
and the positioning deviation rectifying database uploads the positioned coordinates to a third party positioning deviation rectifying database, and the closest deviation rectifying position is inquired to realize relatively accurate positioning on a map. In addition, uploading of the location coordinates to a third party is easily used by the collected data for analysis, creating data security and privacy issues.
And (II) a linear deviation rectifying algorithm is used for rectifying the positioned coordinates by using a linear function, so that the offset distance is reduced to a certain extent, and the deviation rectifying method has the defects of inaccurate positioning and large deviation.
Disclosure of Invention
Aiming at the defects in the prior art, the method and the system for positioning and rectifying the deviation provided by the invention have the advantages that the cost is saved, the accuracy of the position coordinate after rectification is improved, and the problems of data safety and privacy are avoided.
In order to solve the technical problems, the invention provides the following technical scheme:
a method of locating a deviation correction, comprising:
collecting satellite positioning coordinates;
nonlinear rectification: performing deviation correction processing on the satellite positioning coordinate by adopting a nonlinear function to obtain a nonlinear deviation correction coordinate;
position marking: and marking the nonlinear deviation-rectifying coordinates on the electronic map.
Further, the process of performing the correction processing on the satellite positioning coordinate by using the nonlinear function to obtain the nonlinear correction coordinate includes:
correcting the longitude of the satellite positioning coordinate by adopting a first nonlinear function to obtain a nonlinear correction coordinate of the longitude;
and correcting the latitude of the satellite positioning coordinate by adopting a second nonlinear function to obtain a nonlinear correction coordinate of the latitude.
Further, the first non-linear function is
Wherein X is longitude of a satellite positioning coordinate, Y is latitude of the satellite positioning coordinate, and X is a nonlinear deviation correction coordinate of the longitude;
the second non-linear function is
Wherein Y is a non-linear deviation-rectifying coordinate of the latitude.
The invention also provides a system for positioning and rectifying deviation, which comprises:
the acquisition module is used for acquiring satellite positioning coordinates;
the nonlinear deviation rectifying module is used for rectifying the satellite positioning coordinate by adopting a nonlinear function to obtain a nonlinear deviation rectifying coordinate;
and the position marking module is used for marking the nonlinear deviation-rectifying coordinates on the electronic map.
Further, the nonlinear deviation rectifying module comprises:
the longitude deviation correcting module is used for correcting the longitude of the satellite positioning coordinate by adopting a first nonlinear function to obtain a nonlinear deviation correcting coordinate of the longitude;
and the dimension deviation rectifying module is used for rectifying the latitude of the satellite positioning coordinate by adopting a second nonlinear function to obtain a nonlinear deviation rectifying coordinate of the latitude.
Further, the first non-linear function is
Wherein X is longitude of a satellite positioning coordinate, Y is latitude of the satellite positioning coordinate, and X is a nonlinear deviation correction coordinate of the longitude;
the second non-linear function is
Wherein Y is a non-linear deviation-rectifying coordinate of the latitude.
According to the technical scheme, the invention has the beneficial effects that: under the condition of not accessing a third party payment correction database, the acquired satellite coordinates are subjected to nonlinear correction and converted into coordinates which can be marked on a map, so that the accuracy of satellite positioning is improved.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a flow chart of the method of the present invention;
FIG. 2 is a block diagram of the system of the present invention;
FIG. 3 is a coordinate position diagram without non-linear rectification;
FIG. 4 is a coordinate position diagram after non-linear rectification in the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
Referring to fig. 1, the method for positioning and correcting an error according to the present embodiment includes:
and acquiring satellite positioning coordinates which are (X, Y).
Nonlinear rectification: and (3) carrying out deviation rectification processing on the satellite positioning coordinate by adopting a nonlinear function to obtain a nonlinear deviation rectification coordinate, wherein the nonlinear deviation rectification coordinate is (X, Y).
Position marking: the nonlinear deviation-rectifying coordinates are marked on the electronic map, and the acquired satellite coordinates are subjected to nonlinear deviation rectification under the condition that a third-party payment deviation-rectifying database is not required to be accessed, so that the acquired satellite coordinates are converted into coordinates which can be marked on the map, and the accuracy of satellite positioning is improved.
In this embodiment, the process of performing the rectification processing on the satellite positioning coordinate by using the nonlinear function to obtain the nonlinear rectification coordinate includes:
correcting the longitude of the satellite positioning coordinate by adopting a first nonlinear function to obtain a nonlinear correction coordinate X of the longitude;
and correcting the latitude of the satellite positioning coordinate by adopting a second nonlinear function to obtain a nonlinear correction coordinate Y of the latitude.
In this embodiment, the first non-linear function is
Wherein, X is the longitude of the satellite positioning coordinate, Y is the latitude of the satellite positioning coordinate, and X is the nonlinear deviation-correcting coordinate of the longitude.
The second non-linear function is
Wherein, Y is the non-linear deviation-rectifying coordinate of latitude, as shown in fig. 3, the difference between the position a before the deviation rectification of the first non-linear function and the second non-linear function is not performed and the actual position B is at least more than 70 meters, as shown in fig. 4, the position a after the deviation rectification of the first non-linear function and the second non-linear function is consistent with the actual position B, therefore, the accuracy of the positioning is greatly improved by the deviation rectification processing of the first non-linear function and the second non-linear function.
Referring to fig. 2, a positioning and deviation rectifying system includes an acquisition module, a non-linear deviation rectifying module, and a position marking module.
The acquisition module is used for acquiring satellite positioning coordinates (X, Y), and the satellite positioning coordinates (X, Y) are sent to the nonlinear deviation rectification module through the synchronization and transmission of the data synchronization module.
The nonlinear deviation rectifying module is used for rectifying the deviation of the satellite positioning coordinates by adopting a nonlinear function to obtain nonlinear deviation rectifying coordinates (X, Y), the nonlinear deviation rectifying module sends the nonlinear deviation rectifying coordinates (X, Y) to the position marking module and the data storage module, and the data storage module stores the satellite positioning coordinates (X, Y) and the nonlinear deviation rectifying coordinates (X, Y), so that the process of rectifying the deviation of the same satellite positioning coordinates (X, Y) again is avoided, and the operation time and space of the nonlinear deviation rectifying module are saved.
The position marking module is used for marking the nonlinear deviation-rectifying coordinates on the electronic map.
In this embodiment, the non-linear rectification module includes a longitude rectification module and a latitude rectification module.
The longitude deviation correcting module is used for correcting the longitude X of the satellite positioning coordinate by adopting a first nonlinear function to obtain a nonlinear deviation correcting coordinate X of the longitude;
and the dimension deviation rectifying module is used for rectifying the deviation of the latitude Y of the satellite positioning coordinate by adopting a second nonlinear function to obtain a nonlinear deviation rectifying coordinate Y of the latitude.
In this embodiment, the first non-linear function is
Wherein, X is the longitude of the satellite positioning coordinate, Y is the latitude of the satellite positioning coordinate, and X is the nonlinear deviation-correcting coordinate of the longitude.
The second non-linear function is
Wherein Y is a non-linear deviation-rectifying coordinate of the latitude.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (6)
1. A method of locating a deviation correction, comprising:
collecting satellite positioning coordinates;
nonlinear rectification: performing deviation correction processing on the satellite positioning coordinate by adopting a nonlinear function to obtain a nonlinear deviation correction coordinate;
position marking: and marking the nonlinear deviation-rectifying coordinates on the electronic map.
2. The method according to claim 1, wherein the performing the correction process on the satellite positioning coordinates by using the non-linear function to obtain the non-linear correction coordinates comprises:
correcting the longitude of the satellite positioning coordinate by adopting a first nonlinear function to obtain a nonlinear correction coordinate of the longitude;
and correcting the latitude of the satellite positioning coordinate by adopting a second nonlinear function to obtain a nonlinear correction coordinate of the latitude.
3. The method of claim 2, wherein the first non-linear function is
Wherein X is longitude of a satellite positioning coordinate, Y is latitude of the satellite positioning coordinate, and X is a nonlinear deviation correction coordinate of the longitude;
the second non-linear function is
Wherein Y is a non-linear deviation-rectifying coordinate of the latitude.
4. A system for locating a deviation correction, comprising:
the acquisition module is used for acquiring satellite positioning coordinates;
the nonlinear deviation rectifying module is used for rectifying the satellite positioning coordinate by adopting a nonlinear function to obtain a nonlinear deviation rectifying coordinate;
and the position marking module is used for marking the nonlinear deviation-rectifying coordinates on the electronic map.
5. The system for locating a deviation rectification system according to claim 4, wherein the non-linear deviation rectification module comprises:
the longitude deviation correcting module is used for correcting the longitude of the satellite positioning coordinate by adopting a first nonlinear function to obtain a nonlinear deviation correcting coordinate of the longitude;
and the dimension deviation rectifying module is used for rectifying the latitude of the satellite positioning coordinate by adopting a second nonlinear function to obtain a nonlinear deviation rectifying coordinate of the latitude.
6. The system of claim 5, wherein the first non-linear function is
Wherein X is longitude of a satellite positioning coordinate, Y is latitude of the satellite positioning coordinate, and X is a nonlinear deviation correction coordinate of the longitude;
the second non-linear function is
Wherein Y is a non-linear deviation-rectifying coordinate of the latitude.
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Cited By (1)
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| CN117098116A (en) * | 2023-10-18 | 2023-11-21 | 湖北省国土测绘院 | GNSS user terminal position privacy protection method based on CORS |
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