Method for Simultaneous Positioning of Multiple Targets in Life Detection Radar Array

Abstract

The invention provides a method for simultaneously locating multiple targets of a life detection radar array, comprising: arranging at least 4 radar detection units for life detection into an area array to determine their position coordinates; The signal of the unit; extract the number of detected life forms and the corresponding distance information; perform a mathematical random combination on all radar detection units, and pair and combine the distance information in each radar combination to calculate a possible Target position, and assign a credibility index to each position to determine whether it is reserved; and cluster the reserved positions, assign a probability according to the ratio of the number of elements in each class to all possible position points, and select the probability The highest m classes are regarded as the classes where the real position of the target is, and the weighted average is carried out on them, and the specific position of the multi-life body is obtained at the same time. The above method effectively removes erroneous solutions and false solutions, and realizes simultaneous positioning of multiple targets.

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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