Method for passively positioning point sound source based on spatial ten-element array

Method for passively positioning point sound source based on spatial ten-element array

  • CN 103,529,428 A
  • Filed: 10/17/2013
  • Published: 01/22/2014
  • Est. Priority Date: 10/17/2013
  • Status: Active Application
First Claim
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1. the passive acoustic fix ranging method of the point sound source based on the ten yuan of battle arrays in space, is characterized in that, comprising:

  • Step 1, set up XYZ rectangular coordinate system, ten yuan, space battle array is pressed to ad-hoc location in described XYZ rectangular coordinate system to be laid, ten yuan, wherein said space battle array comprises center basic matrix and peripheral basic matrix, described center basic matrix comprises the 1st node, the 2nd node, the 3rd node, the 4th node and the 5th node, and described peripheral basic matrix comprises the 0th node, the 6th node, the 7th node, the 8th node and the 9th node;

    Described the 0th node is positioned at the true origin of described XYZ rectangular coordinate system, and described the 7th node, the 3rd node, the 5th node, the 9th node are positioned at X-axis, and described the 8th node, the 4th node, the 2nd node, the 6th node are positioned at Y-axis, and described the 1st node is positioned at Z axis;

    Wherein, other 9 nodes except the 1st node are in same level, and described the 1st height of node is higher than this surface level, and establishing it is highly H;

    Described the 2nd node, the 3rd node, the 4th node, the 5th node are identical with the distance of the 0th node, and this distance is made as R 1, and claim this R 1aperture for described center basic matrix;

    Described the 6th node, the 7th node, the 8th node, the 9th node are identical with the distance of the 0th node, and this distance is made as R 2, and claim this R 2aperture for described peripheral basic matrix;

    Step 2, point sound source P (x, y, z) send sound wave, this sound wave triggers each node of the ten yuan of battle arrays in described space, each node is constantly transferred to detection and control terminal by wired or wireless mode by its corresponding triggering, and described triggering is sound wave that described point sound source the sends moment while being delivered to node constantly;

    Wherein, P (x, y, z) is the coordinate of described point sound source in described XYZ rectangular coordinate system, and the true origin of described XYZ rectangular coordinate system of take is initial point, sets up spherical coordinate system, and wherein pitching angle theta is the folded angle of directed line segment OP and Z axis forward, position angle for directed line segment OP is at the projection of coordinate plane XOY and the folded angle between X-axis forward, the distance between OP is polar radius L;

    Step 3, described detection and control terminal calculates the 2nd node, the 3rd node, the 4th node and the 5th node with respect to poor τ

    time of arrival of the 1st node constantly according to the triggering of each node of described center basic matrix 21, τ

    31, τ

    41, τ

    51, τ

    wherein ij=t i-t j, i=2,3,4,5;

    J=1, t iand t jbe respectively the triggering of i node and j node constantly;

    Described detection and control terminal calculates the 6th node, the 7th node, the 8th node and the 9th node with respect to poor τ

    time of arrival of the 0th node constantly according to the triggering of each node of described peripheral basic matrix 60, τ

    70, τ

    80, τ

    90, τ

    wherein ij=t i-t j, i=6,7,8,9;

    J=0, t iand t jbe respectively the triggering of i node and j node constantly;

    Step 4, poor τ

    time of arrival calculating according to each node of described center basic matrix 21, τ

    31, τ

    41, τ

    51, the aperture R of height difference H and center basic matrix 1, utilize formula with calculate pitching angle theta and the position angle of described point sound source P (x, y, z) ;

    Poor τ

    time of arrival calculating according to each node of described peripheral basic matrix 60, τ

    70, τ

    80, τ

    90, peripheral basic matrix aperture R 2with effective sound velocity v, utilize formula calculate the sound path information L of described point sound source P (x, y, z) distance the 0th node;

    Step 5, according to described pitching angle theta and position angle l utilizes formula with sound path information z=Lcos (θ

    ) calculates the coordinate P (x, y, z) of described point sound source in described XYZ rectangular coordinate system.

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