Anti-interference method and system for on-board millimeter-wave radar

Abstract

Disclosed is an anti-interference method and system for an on-board millimeter-wave radar. The anti-interference method includes the steps that 1), during driving of a vehicle, a master transmitter of the on-board millimeter-wave radar transmits millimeter waves according to a certain period, and wavelength of the millimeter waves is controlled by a wavelength controller; 2), a receiver of the millimeter-wave radar receives the millimeter waves reflected by obstacles ahead, and wavelength analysis of the millimeter waves is performed through a wavelength analyzer of the millimeter waves; 3), a threshold value b of wavelength variable range is set, and if the wavelength variable range b' of transmitted wavelength y and received wavelength y' is smaller than that of the threshold value b, the current radar system is determined to be interfered by surrounding environment or maliciously and artificially attached.

Description

technical field [0001] The invention relates to the technical field of vehicle-mounted sensor environment perception security, and is suitable for vehicles carrying vehicle-mounted radars, in particular to a vehicle-mounted millimeter-wave radar anti-jamming method and system. Background technique [0002] In recent years, assisted driving and intelligent driving have become a new trend in the development of vehicles. Among them, vehicle radar has been widely used in assisted driving and intelligent driving. In assisted driving, it is mainly used in car collision avoidance and adaptive cruise. It is mainly used for the detection of obstacles, etc. Vehicle-mounted radar has played an increasingly important role in the development of vehicle intelligence. [0003] In the current research process of vehicle radar, the information security of vehicle radar sensors has been lack of attention, especially the research on the direction of millimeter wave radar. During the applicati...

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