Passive multi-array sonar detection tracking method specific to discontinuous target

A detection and tracking, discontinuous technology, applied in the direction of measuring devices, sound wave re-radiation, radio wave measurement system, etc., can solve the problem of incomplete observation of single passive array sonar, achieve wide applicability, simple solution process, and tracking performance Good results

Active Publication Date: 2019-11-15
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Application Information

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Problems solved by technology

[0005] In order to solve the above-mentioned technical problems, the present invention proposes a passive multi-array sonar detection and tracking method for non-continuous targets, which overcomes the problem of inc

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  • Passive multi-array sonar detection tracking method specific to discontinuous target
  • Passive multi-array sonar detection tracking method specific to discontinuous target
  • Passive multi-array sonar detection tracking method specific to discontinuous target

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Embodiment Construction

[0049] The present invention mainly adopts the method of simulation experiment for verification, and all steps and conclusions are verified correctly on MATLAB-R2017b. The specific implementation steps are as follows:

[0050] A0: System initialization

[0051]The initialization parameters include: the number S of passive array sonars, and the number M of array elements contained in each array. In theory, the more passive array sonars, the stronger the detection capability of the system, but at the same time, the computational burden of the system cannot be ignored, so the sonar The selection of the number generally takes into account the complexity and specific requirements of the actual tracking scene. In addition, the selection of the number of array elements M is related to the spectral resolution formed, and its value directly affects the size of the array aperture. The sampling interval of the tracking system is T, and the total tracking step size is L. For the array ...

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Abstract

The invention discloses a passive multi-array sonar detection tracking method specific to a discontinuous target, applied to the field of passive detection and aiming at solving the problems of divergent detection tracking, target recognition failure and track breakage in the prior art. The method comprises the following steps: performing modeling on a discontinuous array receiving signal, and according to the built model, obtaining measurement data of multiple array sonars; based on the obtained measurement data, building a joint likelihood function, and constructing a joint likelihood ratiofunction; and according to a value of a joint likelihood ratio and by combining the joint likelihood function, performing estimation on a state of a target and discontinuity of the target. The methoddisclosed by the invention not only can effectively recognize the discontinuity of the target but also is obviously improved in discontinuous target tracking precision.

Description

technical field [0001] The invention belongs to the field of passive detection, in particular to a passive multi-array sonar target detection and tracking technology. Background technique [0002] In the context of the increasing demand for marine resources and the increasing frequency of ocean conflicts in modern times, sonar technology has attracted much attention at home and abroad. In modern high-tech warfare, due to the emergence of stealth weapons, low-altitude / ultra-low-altitude penetration and other technical means, the target detection and tracking system is facing increasingly serious threats. Passive array sonar detection technology will play an increasingly important role in future information-based naval warfare because of its good concealment and invulnerability to attack. [0003] However, since a single passive sonar sensor can only detect target azimuth information and cannot provide target distance information, it has incomplete observation. In order to s...

Claims

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Application Information

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IPC IPC(8): G01S15/66G01S7/521
CPCG01S7/521G01S15/66
Inventor 杨晓波付玲枝赖淦梁志宇易伟孔令讲
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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