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Radar installation angle calibration method

A calibration method and installation angle technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of high cost of the target object and high design difficulty, and achieve the effect of reducing costs

Pending Publication Date: 2022-05-13
TUNG THIH ELECTRONICS (XIAMEN) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 2. Doppler signal simulation transmitter; the subject matter of this calibration method is expensive and difficult to design

Method used

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  • Radar installation angle calibration method

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Embodiment Construction

[0018] Such as figure 1 As shown, the present invention discloses a method for calibrating the installation angle of the radar. According to the principle that the radar perceives the environment by receiving the reflected wave of the environmental target and forming an intermediate frequency signal, a mechanism is designed that will not form an intermediate frequency signal for the echo of the real environment. signal, but will only form a specific intermediate frequency signal with the target's emission signal, so as to achieve the purpose of reducing the requirements for environmental layout.

[0019] The calibration method of the present invention specifically comprises the following steps:

[0020] Step 1. Set a signal transmitter with a transmission frequency f2 as a target within the detection range of the radar to be calibrated.

[0021] Step 2. Set the working mode of the radar to be calibrated to 0 sweep mode, and the working frequency is f1; there is a difference △...

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Abstract

The invention relates to a calibration method for a radar installation angle, and the method enables the radar transmission frequency to be designed to be in a 0 sweep frequency mode, thereby achieving the anti-interference effect on an environment obstacle because the environment obstacle cannot be detected by the radar in the 0 sweep frequency mode. And then a signal of which the frequency difference with the radar is within a radar detection range is transmitted through a subject matter, and an intermediate frequency signal equivalent to a fixed distance speed is simulated, so that the same effect as that of a Doppler analog signal transmitter is achieved without complex hardware design, and the cost can be reduced.

Description

technical field [0001] The invention relates to the technical field of radar calibration, in particular to a calibration method for radar installation angles. Background technique [0002] Correctly identify the installation angle of the automotive radar relative to the central axis of the vehicle (including horizontal angle and pitch angle) Whether the radar can correctly map the detected information (radar coordinate system information) to other coordinate systems (such as the body coordinate system or the world coordinate system) ) is very important. One of the main methods is to detect the angle information of the target object with known angle information through the automotive radar itself, and then reversely infer the actual installation angle of the object automotive radar. At present, the target objects of this type of method mainly include the following types: [0003] 1. Real target objects (such as corner reflectors or reflective walls, etc.); this calibration me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/40
CPCG01S7/40
Inventor 陈腾林刘瑞进王文斌
Owner TUNG THIH ELECTRONICS (XIAMEN) CO LTD