Millimeter wave radar angle automatic calibration system and method

Abstract

The invention aims to provide a millimeter wave radar angle automatic calibration system and method, and the system comprises a control center which is connected with a target simulation unit and a positioner controller; and a radar target simulator which comprises a target simulation unit, a radio frequency module, a turntable and a shielding environment. The method comprises steps: by setting radar, simulating target values and radar angle sampling scanning stepping and sampling time; setting a radar scanning range according to the radar simulation target value, and performing radar samplingand sending a result to the control center, calculating a difference value between a radar sampling actual angle value and a simulation target value, generating a calibration table and writing the calibration table into the to-be-measured radar as angle compensation of next radar sampling until the difference value is smaller than a preset error value, and completing calibration. Therefore, the automatic calibration of the radar angle test is realized, the angle error caused by installation and test can be effectively and quickly evaluated, and the performance test of the radar system can beaccurately and quickly carried out.

Description

technical field [0001] The invention relates to the field of radar detection, in particular to a millimeter-wave radar angle automatic calibration system and method. Background technique [0002] With the rapid development of autonomous driving technology, intelligent driver assistance systems (ADAS) are becoming more and more popular in automobiles, and millimeter-wave radar, as one of the important sensors of ADAS systems, has become an indispensable part of ADAS systems. [0003] The application of millimeter-wave radar has upgraded the active safety warning system of the car, provided safety guarantee for car driving, and guaranteed the driver's life and property from being infringed to a certain extent. Applying the millimeter-wave anti-collision radar to the car can easily detect the distance, speed and angle of the target, and can give a timely warning in case of danger. [0004] In the development process of automotive millimeter-wave radar products, it is not only ...

AI Technical Summary

Problems solved by technology

[0005] The present invention proposes a millimeter-wave radar angle automatic calibration system and method, which automatically adjusts the angle during radar scanning through a radar target simulator, and further sets the test target information as an automatic calibration reference for radar sampling, thereby continuously improving radar sampling. The accuracy effectively solves various defects in the prior art, specifically:

Images