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Sniping trajectory acoustically measuring method

A measurement method and ballistic technology, which can be used in the test of ammunition, ammunition, weapon accessories, etc., and can solve the problems of large errors in acoustic detection methods.

Inactive Publication Date: 2011-11-16
NORTHWEST INST OF NUCLEAR TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide an acoustic measurement method of a sniper ballistic that can quickly and accurately locate a sniper, which solves the technical problem of large errors in the existing acoustic detection method

Method used

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  • Sniping trajectory acoustically measuring method

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Embodiment Construction

[0076] The present invention takes three regular tetrahedrons randomly arranged and fixed as an example, and the positional relationship between the sniper ballistic line L and each microphone array is as follows: figure 1 shown. In the figure, three regular tetrahedral 4-element arrays constitute a microphone array, and the three regular tetrahedral 4-element arrays are not on the same straight line.

[0077] The steps of the method of the present invention to solve ballistic line are as follows:

[0078] 1. Use the total station to measure and calibrate the spatial coordinates of each sensor in the four-element array of three regular tetrahedrons.

[0079] 2. The three microphone arrays respectively determine the direction lines l of the respective shock wave sound source points 1 , l 2 and l 3

[0080] The wave front of the ballistic shock wave is a conical surface, which passes through the quaternary array S A can be approximated as a plane when S A The first to rec...

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Abstract

The invention relates to a sniping trajectory acoustically measuring method. The method comprises the following steps: (1) randomly distributing and fixing three tetrahedral quaternary arrays to form a microphone array, wherein the three tetrahedral quaternary arrays are not on the same straight line; (2) measuring and calibrating space coordinates of all sensors in the three tetrahedral quaternary arrays by using a total station; (3) respectively determining equations of directional lines l1, l2 and l3 of respective shockwave acoustic source points of the three microphones, and setting the direction from the shockwave acoustic source points to the corresponding microphone matrixes to be the forward directions of directional lines l1, l2 and l3; (4) establishing a geometric model of a trajectory line L and a searching rule; and (5) removing one unreasonable trajectory line and determining a unique trajectory line L. By the method, the technical problem of large error in the conventional acoustically detecting method is solved, and the track and direction of the sniping trajectory can be quickly and accurately calculated, thereby providing a low-cost and practical technical method for safety guard work in critical areas. Therefore, the method has important realistic magnificence in counterterrorism and peacekeeping.

Description

technical field [0001] The invention relates to an acoustic method for quickly and accurately measuring the trajectory of a supersonic sniper bullet, in particular to a calculation method for determining the trajectory of a sniper by utilizing the acoustic characteristics of the shock wave of the sniper trajectory. Background technique [0002] As a sniper rifle required for special operations in modern warfare, its various performances have been greatly developed in recent years. It can also be widely used as police equipment for anti-terrorism and peacekeeping in peacetime. [0003] However, if the sniper rifle is obtained by criminals, it can be used for terrorist sabotage. The height of magic is one foot, and the height of road is one foot. Research on various detection technologies for the characteristics of sniper rifles has always been valued by various countries. The existing methods are: infrared detection system, acoustic detection system, laser detection system a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42B35/00
Inventor 张彤李家武董明荣张敏许学忠郭艳吴娜
Owner NORTHWEST INST OF NUCLEAR TECH
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