Automobile millimeter-wave radar plot condensation method and system

A technology of millimeter-wave radar and dot-track agglomeration, applied in radio wave measurement systems, instruments, etc., can solve problems such as the minimum distance may be less than 5 meters, poor reliability, large difference, etc., and achieve the effect of solving the problem of large target splitting

Pending Publication Date: 2021-04-30
HUIZHOU DESAY SV INTELLIGENT TRANSPORTATION TECH INST CO LTD
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Problems solved by technology

However, in practical applications, due to observation angles, distances, target RCS fluctuations, detection algorithms, etc., the minimum distance between two clusters of traces from a large truck may exceed 10 meters, while the minimum distance between two clusters of traces from two vehicles traveling at the same speed The minimum distance between two clusters of traces on the trolley may be less than 5 m

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  • Automobile millimeter-wave radar plot condensation method and system
  • Automobile millimeter-wave radar plot condensation method and system
  • Automobile millimeter-wave radar plot condensation method and system

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Embodiment Construction

[0058] A method and system for spot agglomeration of automobile millimeter-wave radar according to the present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings.

[0059] Such as figure 1 Shown is the flowchart of the automotive millimeter-wave radar spot cohesion method provided by the present invention, including the following steps:

[0060] Step 1, get the dot trace data of the current frame.

[0061] Step 1-1: Obtain the latest frame of original dot trace data , where N is the number of original traces, and each trace is expressed as , is the distance information, is the azimuth information, is the radial velocity information.

[0062] Step 1-2: Convert the dot trace data to the Cartesian coordinate system to get ,in: and Respectively, the position information of the original trace in the Cartesian coordinate system:

[0063] ;

[0064] Step 2, get the last frame track and recognition...

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Abstract

The invention provides an automobile millimeter-wave radar plot condensation method and system. The method comprises the steps: preferentially carrying out track and plot correlation clustering according to a target position prediction value, a Doppler speed and target length and width information fed back by the track information of a previous frame when the current frame of plot data is condensed, and then carrying out the plot-level condensation of remaining plots. Therefore, a problem that large target splitting and adjacent target merging are difficult to merge and process is avoided, and the problem of large target splitting of the automobile millimeter-wave radar is effectively solved. In addition, in the track and plot correlation clustering process, the length and width information obtained after clustering is corrected through a target recognition result, and more reliable target size feature information is ensured to be output.

Description

technical field [0001] The invention relates to the field of radar signal processing, in particular to a method and a system for agglomerating automobile millimeter-wave radar spots. Background technique [0002] In the field of automotive active safety, the automotive millimeter-wave radar sensor is an essential key component of a smart car. It has strong anti-interference ability and can quickly perceive the distance, speed, azimuth and other information of the surrounding environment of the vehicle in all weathers. Adaptive cruise control (ACC), automatic braking (AEB), forward / rearward collision avoidance warning (F / RCW), blind spot detection (BSD), auxiliary lane change (LCA), and parking assistance can be realized by using millimeter-wave radar (PA) and other advanced driver assistance system (ADAS) functions. [0003] General trace aggregation algorithms, such as sliding window method, labeling method, neighborhood search, clustering algorithm, etc., its basic assump...

Claims

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Application Information

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IPC IPC(8): G01S7/02
CPCG01S7/02
Inventor 刘加欢
Owner HUIZHOU DESAY SV INTELLIGENT TRANSPORTATION TECH INST CO LTD
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