Radar two-dimensional installation attitude calibration method and system based on global positioning system target

Abstract

The invention discloses a radar two-dimensional installation attitude calibration method based on a global positioning system target. The radar two-dimensional installation attitude calibration method comprises the steps of S1, finding out two appropriate feature points on the roadside to serve as target placement sites; S2, enabling a GPS measurement antenna in the target to obtain absolute position coordinates of the target; s3, enabling the radar to scan the triangular corner reflectors in the two targets to obtain relative position coordinates of the targets in the radar coordinate system; s4, establishing a first coordinate system and a second coordinate system according to the obtained absolute position coordinates and relative position coordinates of the target, and determining the relationship between the first coordinate system and the second coordinate system; and S5, converting the data in the second coordinate system into the data in the first coordinate system so as to obtain the absolute position of the point cloud data collected by the radar, and converting the position of the origin of the second coordinate system in the first coordinate system into the absolute position of radar installation. According to the invention, accurate calibration of the radar installation attitude is realized, the actual position of the radar acquisition point cloud data is determined, and convenience is provided for later radar data processing.

Description

technical field [0001] The invention relates to the technical field of roadside microwave radar, in particular to a radar two-dimensional installation attitude calibration method and system based on a global positioning system target. Background technique [0002] With the continuous development of the economy and the continuous progress of intelligent transportation, traffic information detection, which is one of the key parts of intelligent transportation, has received more and more attention. [0003] At present, in the field of traffic information detection, microwave radar has been widely used in roadside traffic information detection due to its multi-lane detection function, all-weather, high accuracy and strong resistance to environmental influences. Compared with the radar, the vehicle point cloud data collected by the roadside microwave radar cannot determine the actual installation position and angle of the radar, and it is further impossible to determine the opera...

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to solve the problem that the actual installation position of the radar cannot b

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