Method for judging new target in millimeter wave radar personnel tracking

Abstract

The invention discloses a method for judging new target generation in millimeter wave radar personnel tracking. The method comprises the following steps of: transmitting an electromagnetic wave signal in a to-be-measured space range through a millimeter wave radar, and receiving a signal reflected back in the to-be-measured space range through the millimeter wave radar; processing the received signal to obtain point cloud information of the current frame; analyzing the remaining point cloud associated with the existing target, and judging whether the remaining point cloud accords with a condition for regenerating a new target or not; if the previous frame point cloud meets the new target generation condition, generating an observation target, and recording the state of the observation target and the associated point cloud frame by frame within a set time; and after reaching the set time, judging whether the observation target becomes a new target or not by combining the continuity of the observation target in the time and the reliability of the associated point cloud. According to the invention, the information of the point cloud and the target is comprehensively considered in the time dimension to judge whether a new target is generated, so that the possibility of generating a false target is remarkably reduced.

Description

technical field [0001] The invention designs millimeter-wave radar signal processing technology, and in particular relates to a judging method for new target generation in millimeter-wave radar personnel tracking. Background technique [0002] Personnel detection and quantity statistics are indispensable data in many existing scenarios, such as airports, shopping malls, chain stores, stations, museums, conference rooms, etc. Personnel detection and data estimation play an important role in safety management and improving the overall service level. important role. Common personnel tracking and detection technologies mainly use images or infrared single recognition methods, but images have a certain impact on privacy, and the scope of use is limited. In terms of infrared, it faces serious problems such as high-resolution equipment, high cost, and easy interference. With the advancement of science and technology, the use of millimeter-wave radar sensors can make up for these ...

AI Technical Summary

Problems solved by technology

These methods are limited by cost, accuracy, and difficulty in implementation, making it difficult to strike a balance between economy and accuracy in the application of people detection and counting

[0004] In the existing methods of personnel detection and quantity statistics, the method for generating new targets is mostly based on the point cloud generated after signal processing of the received signal in the current frame, and judged according to the number of point clouds, Doppler velocity and signal-to-noise ratio Whether this area generates a new target track, but it is easy to generate false targets due to interference from external factors

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