Low altitude target monitoring method based on microphones array network

Abstract

This invention discloses a low altitude targeted surveillance method which is on the basis of microphone array joint net. The invention belongs to low altitude targeted surveillance passive positioning technique field. Aim directly at requirement of administration blind area of remote area and monitoring uncooperation object, through microphone array of rational distribution, data merging system of multitude transmitters, low altitude targeted surveillance net of multitude subgroups wirdess network structure, compose single microphone array by means of space array through multitude transmitters, make every microphone receive sound wave signal of flying equipment shaking air radiation, through self-adaptation wave bunch treater, use algorithm such as wave beam shape, use wave beam control delay line, change delay amount of direction control delay line, measure wave direction of object; use multitude self-adaptation treater to superpose to construct self-adaptation transmitter array, make multitude microphone arrays process and obtain multi-target wave direction information by multitude self-adaptation transmitter arrays, merge information from multitude subgroups wirdess network structure to multi-transmitter data merging system, extract objective navigating information.

Description

1. Technical field [0001] The invention relates to control and signal processing, microelectronic computer technology, communication network technology and sensor technology, and especially belongs to the technical field of low-altitude target monitoring and target passive positioning. 2. Background technology [0002] At present, domestic and foreign research literature on microphone array and passive positioning technology mainly focuses on the single array positioning method itself, and its application in speech enhancement, blind source acoustic signal separation, noise source and robot positioning. The technology of directly networking multiple microphone arrays, adopting multi-sensor data fusion, and using it for low-altitude target positioning and monitoring has not been reported yet. For example, Ju Tailiang et al., "Research on Two-Dimensional DOA Estimation Algorithm of Sound Source Based on Arbitrary Microphone Array" (Journal of Communications, No. 8, 2005), main...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to utilize technologies such as acoustic passive positioning, multi-hop packet wireless network (Ad-Hoc) networking and multi-sensor data fusion to propose a low-altitude target monitoring method, trying to solve the problem of sparsely populated and remote airspace monitoring blind spots. It can overcome the shortcomings of the above-mentioned schemes, and make the related surveillance system have good concealment, high invulnerability, low cost, and convenient erection and installation.

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