A method, system and medium for deblurring the velocity of environmental targets based on automotive radar

Abstract

The invention discloses a vehicle radar-based environmental target speed defuzzification method, system and storage medium, which belong to the technical field of radar speed measurement and are used to solve the current technical problems of large amount of defuzzification calculations and low precision. The specific technical scheme adopted is as follows : Based on the automotive radar transmitting two sets of pulse Doppler signals with different pulse repetition periods, two sets of different two-dimensional FFT data are obtained; the number of targets in different Doppler dimensions in two sets of two-dimensional FFT data is counted, and the number of targets with the largest number is obtained The Doppler-dimensional position is the Doppler-dimensional position of the environmental target; the true velocity of the environmental target is solved by the hypothesis verification method. The method, system and storage medium of the present invention all have the advantages of small calculation amount, high precision, easy operation and the like.

Description

technical field [0001] The invention relates to the technical field of radar speed measurement, in particular to a method, system and medium for defuzzifying the speed of an environmental target based on automobile radar. Background technique [0002] Vehicle-mounted millimeter-wave radar is a transceiver device installed on a car for obstacle target detection. It emits electromagnetic waves to the space around the car, and part of the electromagnetic waves returns to the radar after encountering obstacles. After receiving the echo signals, the radar performs a series of signal processing techniques to obtain the distance, speed, angle, etc. of each obstacle target touched by the electromagnetic waves. information. The radar has a certain detection range for the above-mentioned target information. When the target is within the detection range, the above-mentioned detection information is accurate; when the target exceeds the detection range, the above-mentioned inspection r...

AI Technical Summary

Problems solved by technology

[0008] (1) The existing speed defuzzification method performs indiscriminate defuzzification on both environmental targets and non-environmental targets, resulting in a sharp increase in the amount of computation, and due to amplitude matching errors, it is prone to defuzzification errors;

[0009] (2) Since the defuzzification has a certain success rate, the defuzzification result of the environmental target may be wrong, resulting in error prone defuzzification;

[0010] (3) According to the existing defuzzification method, the more targets there are, the lower the success rate of defuzzification is, and the frequency spectrum of environmental targets is likely to interfere with moving targets, resulting in the failure of defuzzification of dangerous targets such as vehicles and people.

Images