Vehicle-mounted forward millimeter wave radar installation error self-calibration method

A millimeter-wave radar, installation error technology, applied to radio wave measurement systems, instruments, etc., can solve troublesome and time-consuming problems

Pending Publication Date: 2021-07-16
安庆楚航电子科技有限公司
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the calibration procedure needs to be completed with accurate and expensive calibration equipment in the car factory before the car leaves the factory.
Not only is it time-consuming, but once the position of the frame changes slightly (such as collision or loosening), the radar must be returned to the original factory for recalibration, causing a lot of trouble

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Vehicle-mounted forward millimeter wave radar installation error self-calibration method
  • Vehicle-mounted forward millimeter wave radar installation error self-calibration method
  • Vehicle-mounted forward millimeter wave radar installation error self-calibration method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0029] see figure 1 , a vehicle forward millimeter-wave radar installation error self-calibration method provided by an embodiment of the present invention, wherein the test road is set as a straight track plus a turning structure, and the radar angle at A is set on the left side of the straight track at the turning section For the reflector, set the radar corner reflector at D on the right side of the turning section on the straig...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a vehicle-mounted forward millimeter wave radar installation error self-calibration method, which comprises the following steps of: (1) a forward radar is installed at a specified installation position of a vehicle, so that an installation error initial value horizontal installation angle error delta alpha is equal to a vertical installation angle error delta alpha which is equal to 0; (2) the vehicle passes through the test road along the test road at a speed greater than 15 kilometers per hour; (3) in the vehicle running stage, the test program monitors the vehicle speed in real time, and when the vehicle speed is larger than 15 kilometers per hour for the first time, first online automatic calibration is carried out; according to the vehicle speed, four static targets with the maximum reflection power at the current place are taken to calculate the current values delta alpha and delta beta; the self-calibration method for the installation error of the vehicle-mounted forward millimeter-wave radar is optimized, the installation error of the radar is judged in different use environments by adopting detection on different road sections, and the method has universality.

Description

technical field [0001] The invention relates to the technical field of calibration of millimeter-wave radars, in particular to a method for self-calibrating installation errors of vehicle-mounted forward millimeter-wave radars. Background technique [0002] The currently used forward millimeter-wave radar applies advanced driver assistance systems, such as adaptive cruise ACC system and automatic emergency braking AEB system. Relying on the emission of electromagnetic waves of a specific frequency (76GHz-81GHz), receiving and processing the echo signal to detect the characteristic parameters of the target in front, such as distance, relative speed, angle and reflected power. Since the antenna performs wave-condensing processing on the emitted electromagnetic waves, the detection of the radar has a certain directionality, and the detection range is within a certain opening angle (Field of view Fov) perpendicular to the antenna surface. Therefore, the installation of the rada...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01S7/40
CPCG01S7/40
Inventor 楚詠焱张我弓李烜
Owner 安庆楚航电子科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap