A UWB-Based Auto-following Fast Positioning Method

Abstract

The present invention claims to protect an ultra-broadband-based automatic follow-up fast positioning method, which mainly includes the following steps: by measuring the time stamp of the data packet sent and received between the tag and the base station, calculating the relative distance between the two base stations and the tag, Estimate the optimal value of the distance through multiple filtering, quickly calculate the distance and relative angle from the platform equipped with the base station to the tag according to the measured distance, locate the position of the tag, and then calculate the distance and relative angle. The invention realizes a fast and high-efficiency positioning mode, and reduces the calculation amount.

Description

technical field [0001] The invention belongs to the application field of positioning following technology, in particular to an ultra-wideband-based automatic following fast positioning method. Background technique [0002] UWB (Ultra-Wideband) ultra-wideband, initially using pulse radio technology, this technology can be traced back to the 19th century. Later, major companies such as Intel proposed the MB-OFDM technology solution using UWB. Because the two solutions are completely different, and each has strong camp support, the 802.15. Decide on the final standard solution, then leave it to the market to resolve. In order to further increase the data rate, UWB applies ultra-short baseband rich GHz-level spectrum. UWB was used in short-distance high-speed data transmission in the early days. In recent years, foreign countries have begun to use its sub-nanosecond ultra-narrow pulse for short-distance precise indoor positioning. [0003] UWB (Ultra Wideband) wireless commun...

AI Technical Summary

Problems solved by technology

[0004] Traditional GPS has low precision and cannot be used indoors or in environments with large building blocks. The target tracking technology based on monocular vision has a large amount of calculation, cannot be tracked by blocks, and is difficult to recover the relative position information of the target. Problem Although the Bluetooth and RFID positioning technologies are less disturbed by the environment, they have a short operating distance and weak communication capabilities, making it difficult to integrate into other systems; infrared technology consumes a lot of power and is often blocked by indoor walls or objects. Poor performance; ultrasonic positioning accuracy can reach centimeter level, the accuracy is relatively high, but the ultrasonic attenuation is obvious during the transmission process, which affects the effective range of its positioning, and the cost is high

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