Method for simultaneous multiple-target positioning with life detection radar array

Abstract

The invention provides a method for simultaneous multiple-target positioning with life detection radar array. The method comprises the steps of arranging at least four radar detection units for life detection into a face array, determining position coordinates of the radar detection units; acquiring signals of each radar detection unit; extracting the detected number of life bodies and the corresponding distance information, and performing mathematical random combination on all the radar detection units, carrying out pairing combination on the distance information in each radar combination tocalculate a possible target position, assigning a reliability index to each position so as to determine whether the positions are reserved or not, carrying out clustering on the reserved positions, distributing a probability according to the proportion of the elements in each class to all possible position points, selecting m classes with the highest probability as the classes where the real positions of the target bodies are located, carrying out weighted average on the m classes and obtaining the specific positions of the multiple life bodies. According to the method, wrong and false solutions are effectively removed, and simultaneous positioning of multiple targets is achieved.

Description

technical field [0001] The invention belongs to the field of life detection radar systems and relates to a method for simultaneously positioning multiple targets of a life detection radar array. Background technique [0002] In the existing post-disaster rescue process, life detection radar has played a lot of roles, providing first-hand information for rescuers to determine whether there is life under the ruins. In the actual rescue process, some rescue targets have not been found. , or cannot be accurately positioned, resulting in secondary damage to other objects when a certain object is rescued. Therefore, it is very important to simultaneously identify the existence of multiple objects under the ruins and determine their specific positions. The current life detection radar is basically a single-station type, which can only help rescuers determine whether there is a living body within the radar detection area, but cannot determine the specific location of the living body...

AI Technical Summary

Problems solved by technology

[0002] In the existing post-disaster rescue process, life detection radar has played a lot of roles, providing first-hand information for rescuers to determine whether there is life under the ruins. In the actual rescue process, some rescue targets have not been found. , or cannot be accurately positioned, resulting in secondary damage to other objects when a certain object is rescued, so it is very important to simultaneously identify the existence of multiple targets under the ruins and determine their specific positions

The current life detection radar is basically a single-station type, which can only help rescuers determine whether there is life within the radar detection area, but cannot determine the specific location of the life

In order to determine the location of the living body, existing studies have adopted the method of triangulation, which detects a target at the same time through three radar units to determine the location of the living body. However, this positioning method is applicable when there is only a single living body. Accurate positioning cannot be achieved in the presence of multiple living organisms, while the existing relatively mature methods for simultaneously locating multiple targets require each targeted target to have its characteristic identification information, including a specific ID or the speed of each target , volume and other parameters are different in order to realize the one-to-one correspondence between the positioning information and the target body, so as to realize the simultaneous positioning of multiple targets, but in the process of life detection, these difference information basically do not exist, so the traditional life detection radar The system and positioning method cannot solve the problem of simultaneous positioning of multiple targets

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