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...

AI Technical Summary

Problems solved by technology

During the application of the vehicle radar, there will be mutual interference with the radar system signals of other vehicles. At the same time, the vehicle radar system will also be interfered by the speed radar, resulting in the vehicle radar system not working properly.

In addition, in the process of vehicle intelligence development, intelligent vehicles may also be subject to malicious attacks by humans, especially the radar system may be maliciously interfered by other radar systems, which will cause the radar system to be paralyzed, and even cause traffic accidents

[0004] At present, the radar anti-jamming technology is mainly concentrated in the time domain, frequency domain, air domain, polarization domain and multi-domain joint. The typical example is the space-time two-dimensional processing (STAP) technology. The application of this technology can effectively detect Slow targets in the clutter area, but with the gradual increase of interference types and the gradual complexity of environmental noise, it is difficult to guarantee the detection accuracy of airborne radar simply by relying on STAP technology

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