Wireless high-precision long-distance outdoor positioning system

Abstract

The invention discloses a wireless high-precision long-distance outdoor positioning system, which belongs to the technical field of outdoor wireless positioning and comprises a positioning tag, a base station I, a base station II, a base station III, a switch module and an upper computer module, wherein the positioning tag is arranged on a measured object, and the positioning tag comprises a tag main control unit, a tag UWB unit, a first wireless communication unit, a first serial port conversion unit and a tag power supply unit; and the base station I, the base station II and the base station III are arranged at preset positions in a positioning space, and each of the base station I, the base station II and the base station III comprises a base station main control unit, a base station UWB unit, a wireless communication unit II and a serial port conversion unit II. The wireless high-precision long-distance outdoor positioning system utilizes the UWB technology as the core technology of the positioning system, the DWM1000 chip serves as radio frequency transceiving hardware, centimeter-level accurate positioning can be achieved, Kalman filtering and the Chan algorithm are fused for positioning calculation, and the positioning precision of the positioning system in the severe indoor environment can be improved.

Description

technical field [0001] The invention relates to the technical field of outdoor wireless positioning, in particular to a wireless high-precision long-distance outdoor positioning system. Background technique [0002] After retrieval, Chinese Patent No. CN105427549A discloses a positioning system and method based on GPS. Although the invention can realize personnel positioning, its positioning accuracy is not high, and the system is susceptible to external interference; the positioning system is to determine the spatial position as the goal And constitute an interrelated aggregate or device; the current common positioning system mainly adopts GPS (Global Positioning System), Beidou system, electronic tags, Wifi, infrared, ultrasonic and WaveLAN, among which GPS and Beidou system, although The positioning range is large, but the positioning accuracy is not high (meter level); while electronic tags and Wifi, although the positioning accuracy is relatively high, but their positio...

AI Technical Summary

Problems solved by technology

[0002] After retrieval, Chinese Patent No. CN105427549A discloses a positioning system and method based on GPS. Although the invention can realize personnel positioning, its positioning accuracy is not high, and the system is susceptible to external interference; the positioning system is to determine the spatial position as the goal And constitute an interrelated aggregate or device; the current common positioning system mainly adopts GPS (Global Positioning System), Beidou system, electronic tags, Wifi, infrared, ultrasonic and WaveLAN, among which GPS and Beidou system, although The positioning range is large, but the positioning accuracy is not high (meter level); while electronic tags and Wifi, although the positioning accuracy is relatively high, but their positioning range is small, and the positioning signals of GPS, Beidou system, electronic tags and Wifi are easily affected by the outside world. Factor interference; With the continuous development of artificial intelligence technology, people's requirements for precise positioning of objects are also increasing; therefore, it is particularly important to invent a wireless high-precision long-distance outdoor positioning system

[0003] Most of the existing long-distance outdoor positioning systems use GPS and Beidou systems for position determination. Although GPS and Beidou systems have a large positioning range, their positioning accuracy is not high, only reaching the decimeter level, and their positioning signals are easily interfered by external factors ; To this end, we propose a wireless high-precision long-distance outdoor positioning system

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