A Correction Method for Indoor Positioning Error
A correction method and indoor positioning technology, applied in the field of mobile communications, can solve the problems of increased workload and cost, and errors that cannot be changed, and achieve the effects of reduced workload, fast and accurate positioning errors, and low cost
Inactive Publication Date: 2016-06-01
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 schematic diagram of a specific correction method of the indoor positioning error correction method of the present invention.
[0032] In this embodiment, taking the planar layout structure of a certain floor inside a shopping mall as an example, the indoor location where there is a positioning error is corrected, such as figure 1 As shown, an indoor positioning error correction method of the present invention includes the following steps:
[0033] (1) Establish a rectangular coordinate system in the positioning area and a database of possible pedestrian trajectories;
[0034] Establish a rectangular coordinate system and make the positioning area in the rectangular coordinate system. Then, based on all the road information and building information in the positioning area, determine all possible pedestrian positions in the positioning area in the rectangular coordinates with a certain distance as the unit Establish the trajectory database of the coordinates in...
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The invention discloses a method for correcting indoor positioning errors. By establishing a rectangular coordinate system and a track database in the positioning area, the possible positions of pedestrians in the positioning area are established in the rectangular coordinate system, and then by judging the relative position in the positioning process Whether the time difference and moving distance between the adjacent two groups of positions is reasonable, so as to find out the wrong position, and finally correct the wrong position reasonably, so that the wrong position is on the trajectory of the pedestrian. In this way, the positioning error can be quickly and accurately corrected without increasing any software and hardware costs, and has the advantage of low cost, which is suitable for the current development needs of indoor positioning.
Description
Technical field [0001] The present invention belongs to the field of mobile communication technology, and more specifically, relates to a method for correcting indoor positioning errors. Background technique [0002] The current indoor positioning methods mainly include ranging positioning methods and non-ranging positioning methods. The ranging positioning method converts various measurement information such as signal receiving 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 one signal The receiver can obtain multiple measurement information, convert it into multiple distances, and 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 collecte...
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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