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Positioning method and system

A positioning method and a predetermined area technology, applied in the computer field, can solve problems such as large system overhead, and achieve the effect of reducing system overhead and reducing the amount of calculation

Inactive Publication Date: 2010-11-10
北京高森明晨信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problem in the prior art that when it is necessary to determine whether the positioning target is within the range of the irregular figure, it is necessary to call the boundary parameters frequently and perform multiple calculations, resulting in high system overhead, the embodiment of the present invention proposes a positioning method and system

Method used

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Embodiment 1

[0042] The first embodiment of the present invention proposes a positioning method, the process of which is as follows image 3 shown, including:

[0043] Step 101, obtaining the longitude and latitude of the positioning target on the map, and obtaining the boundary longitude and latitude of the predetermined area;

[0044] Step 102: Obtain the boundary points in the predetermined area that have the same longitude as the positioning target, and compare the latitude of the boundary points with the latitude of the positioning target, and determine whether the number of boundary points on both sides of the positioning target is are all odd numbers, if otherwise it is determined that the positioning target is located outside the predetermined area, the step ends;

[0045] Step 103: Obtain boundary points in the predetermined area that have the same latitude as the positioning target, and compare the longitude of the boundary points with the longitude of the positioning target, an...

Embodiment 2

[0048] The second embodiment of the present invention is improved on the basis of the first embodiment. In the first embodiment, it is proposed to judge whether the boundary points located on both sides of the positioning target are odd numbers respectively through the east-west direction and the north-south direction, then the specific implementation method can adopt the following technical solutions, and its process is as follows Figure 4 shown, including:

[0049] Step 201, obtaining the longitude and latitude of the positioning target on the map, and obtaining the boundary longitude and latitude of the predetermined area;

[0050] Step 202: Determine the position of the positioning target on the GIS map according to the longitude and latitude of the positioning target;

[0051] Wherein, both step 201 and step 202 are prior art, and those skilled in the art can simply mark the predetermined area and positioning target on the existing GIS map according to the prior art;

[...

Embodiment 3

[0073] The third embodiment of the present invention proposes a positioning system, the structure of which is as follows Figure 5 shown, including:

[0074] Coordinate acquisition module 1, used to acquire the longitude and latitude of the positioning target on the map, and acquire the boundary longitude and latitude of the predetermined area;

[0075] The north-south direction determination module 2 is used to obtain the boundary point with the same longitude as the positioning target in the predetermined area, and compare the latitude of the boundary point with the latitude of the positioning target, and determine whether it is located in the north or south of the positioning target Whether the number of boundary points on both sides is an odd number, if not, it is determined that the positioning target is located outside the predetermined area;

[0076] The east-west direction determining module 3 is used to obtain the boundary point having the same latitude as the positi...

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Abstract

The invention provides a positioning method and a system, which relate to the technical field of computer technologies. The embodiment obtains the latitude and the longitude of a positioned target on a map, and obtains the boundary latitude and longitude of a preset area; obtains a boundary point in the preset area which has the same longitude with the positioned target, compares the latitude of the boundary point with the latitude of the positioned target, and judges whether the number of the boundary points on both sides of the positioned target is an odd number; and obtains the boundary point in the preset area which has the same longitude with the positioned target, compares the longitude of the boundary point with the latitude of the positioned target, and judges whether the number of the boundary points on both sides of the positioned target is an odd number. The embodiment calculates whether the positioned target is in the preset area through the simple method, and can reduce the calculation amount and reduce the system overhead compared with the prior art.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a positioning method and system. Background technique [0002] The positioning technology has been widely used, especially as the development of the technology leads to the reduction of the cost of positioning, the positioning technology can be applied to more fields. In addition to determining the position of the positioning target, the positioning technology on the GIS (Geograhpic Information system, geographic information system) map can also be used to determine whether the target moves beyond a predetermined range. The specific method is: determine the peripheral coordinates of the predetermined range, determine the coordinates of the target, and then judge whether the target coordinates fall within the peripheral coordinates of the predetermined range. [0003] This method in the prior art is applicable to the environment where the predetermined range is a regular graph....

Claims

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Application Information

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IPC IPC(8): G06F17/30
Inventor 金晨张昕
Owner 北京高森明晨信息科技有限公司
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