Three-array-based aerial burst point positioning method

Abstract

Disclosed in the invention is a three-array-based aerial burst point positioning method. The method comprises: three identical array groups are arranged below a predetermined burst point and each array is connected with a central computer of a remote safety region by an ethernet network to form a three-array network positioning system; the three arrays collect acoustic signals generated during an aerial burst point explosion process respectively, azimuth angle and pitch angle information of the burst point is calculated based on the collected acoustic signals; and the azimuth angle and pitch angle information is transmitted to the central computer of the remote safety region; and then the central computer carries out fusion processing on central position coordinates of all arrays and the received azimuth angle and pitch angle information based on a multi-array positioning method of a total least square, thereby obtaining a position coordinate of the aerial burst point. With the method disclosed by the invention, the sensitivity between the microphone array structure and the measuring angle is reduced; the processing time is shortened; and the positioning accuracy is improved.

Description

technical field [0001] The invention relates to passive acoustic positioning technology, in particular to a method for locating bombing points in the air based on three basic arrays. Background technique [0002] Accurately locating the coordinates of bombing points in the air is of great significance for evaluating the performance of weapons. In China, the optical cross-drawing method of observing the explosion light is mostly used to locate the explosive point in the air. This method relies on manual observation to capture the target, which is labor-intensive, poor in safety, and sometimes misses and mis-measures, making it difficult to guarantee measurement accuracy. In foreign countries, large-field TV theodolites are often used to locate bombing points in the air. Although the work efficiency and test accuracy have been improved, the system is huge and expensive, and due to the particularity of the application field of this technology, it is difficult for our country to...

AI Technical Summary

Problems solved by technology

Commonly used data fusion methods include geometric mean, direction finding intersection, maximum probability search, etc., the steps are cumbersome, the amount of calculation is large, and the error of the array position and the angle error of the measured sound source are not considered.

In addition, whether it is a positioning method based on a single array or multiple arrays, the influence of the array structure on the angle measurement of the sound source is not involved when the three-dimensional array is used.

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