Multi-frequency-point positioning data returning system, positioning system and method thereof

Abstract

The invention discloses a multi-frequency-point positioning data returning system and a method thereof. The positioning data returning system comprises a plurality of returning data broadcasting stations, and a returning data receiver is arranged on a to-be-positioned device. Each backhaul data broadcasting station sends position information to the backhaul data receiver by using different frequency points, so that the problem of same-frequency interference of overlapped parts of coverage areas of a plurality of broadcasting stations is solved. Besides, each return data broadcasting station can send a positioning data packet to the return data receiver at the same time through the return data synchronizer, so that the multi-frequency-point positioning data return system can set a receivingtime period for the return data receiver, and the same positioning data packet of different broadcast frequency points can be received in a specific receiving time period. Meanwhile, the backhaul data receiver scans which frequency point signal is the strongest, so that another receiving channel is locked to the frequency point, the optimal selection of the receiving frequency point is realized,in addition, an independent receiving channel does not need to be arranged for each frequency point, and the hardware cost is saved.

Description

technical field [0001] The present disclosure relates to the field of communications, and more particularly, the present disclosure relates to the field of positioning. Background technique [0002] Short-range, high-precision wireless indoor positioning technology is widely used in dense urban areas and indoor closed spaces, such as personnel safety monitoring and emergency rescue. As well as the transportation management, distribution and scheduling of materials. The existing positioning system mainly includes a positioning tag placed on the device to be positioned and a fixed positioning base station, wherein the positioning tag transmits a positioning signal, the positioning base station receives the positioning signal, and the positioning system calculates according to the time information of the positioning signal arriving at the positioning base station. The location information of the bit device. Limited by the hardware resources required to calculate the location ...

AI Technical Summary

Problems solved by technology

However, due to the limited transmission distance of the return data broadcasting station, when the area to be located is large or the internal structure of the area to be located is relatively complex, it is necessary to add multiple return data broadcasting stations to send location information. When the receiver is in the overlapping coverage area of ​​two backhaul data broadcasting stations, the problem of co-channel interference will occur, so that the backhaul data receiver cannot receive the location information sent by any backhaul data broadcasting station

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