A method for judging the number of active people in through-wall radar based on distance and correlation

Abstract

The invention provides a moving people number determining method based on distance and association by utilizing a through-the-wall radar. By the adoption of moving people number determining method, from the point of view of the data association, on the basis of a lot of experimental data, the change rule of a distance sum in the random motion of multiple objects under a complex and closed building environment is analyzed and summarized. When moving randomly in a narrow space, inevitably, multiple people will block one another within a period of time, so that echo mutations are caused. Accordingly, critical regions formed by the mutations serve as the judging conditions of the moving objects appearing in a room, and then target data of the mutations occurring in the critical regions are associated so that the number of the moving objects can be determined. According to the moving people number determining method, the number of moving people can be extracted by utilizing the through-the-wall radar, moving human body tracking can be assisted so as to improve the quality of a flight path, and the tracking effect of the multiple objects under the complex and closed building environment can be improved.

Description

technical field [0001] The invention relates to the technology of through-wall radar, in particular to the detection and tracking technology of through-wall radar. Background technique [0002] As a new type of special reconnaissance equipment to assist in the execution of military tasks in complex and closed building environments, wall-penetrating radar realizes wall-penetrating detection by emitting electromagnetic waves of specific frequency bands, gradually replacing conventional reconnaissance methods such as anti-cat-eye peepers and door-slit peepers. Anti-terrorism, street fighting and other military battlefields have been more and more widely used. In recent years, it has become a research hotspot in the field of radar technology at home and abroad. Through-wall radar can realize imaging, detection, recognition, positioning and tracking of objects of interest in buildings by extracting useful information from echo signals and processing information. [0003] One of ...

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