Automotive anti-collision radar detection-communication integrated function realization method

Abstract

The invention discloses an automotive anti-collision radar detection-communication integrated function realization method, and belongs to the technical field of radar and wireless communication. The automotive anti-collision radar detection-communication integrated function is realized by adding a label identification function of a roadside traffic sign for a forward anti-collision radar by utilizing a back-scattering communication technology. For the problems of high label identification error rate caused by the condition that the back-scattering signal is weak in energy and can be easily influenced by the target echo, clutter and noise of a vehicle, the invention provides a frequency modulated continuous wave radar back-scattering communication system design method based on spread spectrum encoding, a direct sequence spread spectrum technology is introduced into the back-scattering modulation of the label, and a label back-scattering signal is enhanced by utilizing a spread spectrumgain produced through receiving despreading processing, thereby realizing aims of label target detection and information extraction. The method disclosed by the invention has the advantages that the radar hardware upgrade is unnecessary, the system performance is stable, and the interference resistance is strong.

Description

technical field [0001] The invention belongs to the technical field of radar and wireless communication, and relates to a method for realizing the integrated function of vehicle anti-collision radar detection and communication based on backscatter communication. Background technique [0002] Automotive collision avoidance radar is an indispensable sensor for autonomous vehicles with its object detection function. With the development of vehicle-road coordination technology, adding the label recognition function of roadside traffic signs to forward collision avoidance radar through backscatter communication technology will have important application value. The tag recognition function can not only be used for traffic sign recognition, but also can realize simple inter-vehicle communication by installing tags on the car, such as turning or braking notification, which will help improve the driving safety of the car. Backscatter communication is an emerging wireless communicati...

AI Technical Summary

Problems solved by technology

However, due to the low energy of the backscattered signal from the tag, it weakens rapidly with the increase of distance

In the actual road environment, the backscattered signal of the tag will be submerged in the vehicle road target echo, clutter and noise, which greatly reduces the system reliability

Scholars at home and abroad have mostly focused on the information extraction of short-distance tags on backscatter communication, but have not solved the problem of weak backscattering signal energy of long-distance tags.

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