Method and system for collecting road vehicle information by radar based on clustering algorithm

Abstract

The present invention discloses a method and system for collecting road vehicle information by radar based on a clustering algorithm, wherein the method includes: obtaining radar measurement point data whose characteristic variable meets a preset characteristic interval, and storing it as a first data set; analyzing the first data based on time Add frame numbers to the concentrated radar measurement point data respectively, perform normalization processing and clustering processing on the radar measurement point data in the first data set, and obtain multiple target cluster data from the radar measurement point data in the first data set; The serial number and the vertical relative distance between the target and the radar construct a coordinate system, map the data of each radar measurement point in the target cluster data to the coordinate system, and fall into the coordinate system based on the starting radar measurement point data and the ending radar measurement point data. The position in the coordinate system is used to screen out the effective cluster data; the road vehicle information is calculated based on the radar measurement point data contained in the effective cluster data, which solves the problem of insufficient precision of the existing statistical methods.

Description

technical field [0001] The invention relates to the field of radar applications, in particular to a method and system for collecting road vehicle information by radar based on a clustering algorithm. Background technique [0002] The existing methods of detecting road vehicle information have many disadvantages, for example: the way of using optical cameras for video detection is affected by light and weather, and it is impossible to continuously monitor traffic conditions for 24 hours; the method of using magnetic induction detectors buried under the ground for detection , the ground will be damaged when the equipment is installed, the installation cost is high and the traffic will be seriously affected during the installation; the air pipeline is used for detection, and the information dimension that can be obtained is limited, only the number of vehicles can be obtained, and more valuable information such as speed cannot be obtained. information. [0003] Compared with t...

AI Technical Summary

Problems solved by technology

[0004] However, the difficulty of using millimeter-wave radar to detect road vehicle information lies in the background clutter of the received electromagnetic waves and the multipath noise caused by multiple reflections of the same target

The characteristics of multipath noise and target points are similar, so it is difficult to distinguish them, and it is easy to cause counting errors and other problems.

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