Indoor location error correcting method
A correction method and indoor positioning technology, applied in the field of mobile communications, can solve the problems of unchangeable errors, increased workload and cost, etc., and achieve the effects of fast and accurate positioning errors, reduced workload, and low cost
Inactive Publication Date: 2014-08-27
成都旗客科技有限公司
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However, the disadvantages of these two methods are that the workload and cost are greatly increased, and because the indoor positioning technology itself relies on wireless signal data, when the wireless signal itself has certain instability, the algorithm based on wireless signal and The improved algorithm cannot change the error caused by the instability of the signal itself, and the error mentioned above may still exist
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[0031] figure 1 It is a specific correction schematic diagram of the correction method for indoor positioning errors of the present invention.
[0032]In this embodiment, taking the plane layout structure of a certain floor inside the shopping mall as an example, the indoor position where there is a positioning error is corrected, such as figure 1 As shown, a method for correcting indoor positioning errors of the present invention includes the following steps:
[0033] (1), establish the Cartesian coordinate system in the positioning area and the possible trajectory database of pedestrians;
[0034] Establish a Cartesian coordinate system and make the positioning area in the Cartesian coordinate system, and then determine all the possible positions of pedestrians in the positioning area in the Cartesian coordinates based on all road information and building information in the positioning area, with a certain distance as the unit The coordinates in the system, and the relatio...
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The invention discloses an indoor location error correcting method. The positions where a pedestrian possibly appears in a location area are established in a rectangular coordinate system by establishing the rectangular coordinate system and a trajectory data base in the location area, then whether the time difference and the moving distance between two adjacent positions in a location process are reasonable is judged to find out location error positions, and finally the error positions are reasonably corrected to enable the error positions to be at a pedestrian moving track. Thus, location errors can be quickly and accurately corrected without increasing any software and hardware cost. The indoor location error correcting method has the advantages of being low in cost and meeting the requirement of development of existing indoor location.
Description
technical field [0001] The invention belongs to the technical field of mobile communication, and more specifically relates to a method for correcting indoor positioning errors. Background technique [0002] Current indoor positioning methods mainly include ranging positioning methods and non-ranging positioning methods. The distance measurement positioning method converts various measurement information such as signal reception strength, arrival time difference, arrival time, etc. into the distance between the signal transmitter and the signal receiver through parameter settings, and uses multiple signal transmitters with known coordinates and a signal The receiver can obtain multiple measurement information, convert it into multiple distances, and then solve the coordinates of the signal receiver through the Euclidean formula. The non-measurement positioning method mainly adopts the method of database matching positioning, and locates the database through the signal data c...
Claims
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IPC IPC(8): G01S5/02
CPCG01C21/206G01C25/00G01S5/02
Inventor 杨能
Owner 成都旗客科技有限公司