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Seabed horizontal array shape correction method and processor

A horizontal and formation technology, applied in the direction of instruments, sound wave re-radiation, and utilization of re-radiation, etc., can solve problems such as equation solving prone to pathological problems, calculation error accumulation, delay estimation accuracy susceptible to underwater acoustic channel interference, etc. Achieve the effect of reliable formation correction results and avoid error transmission problems

Pending Publication Date: 2021-11-30
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0004] Aiming at the deficiencies of the existing horizontal array correction method in practical applications, such as the delay estimation accuracy is susceptible to underwater acoustic channel interference, calculation error accumulation, and equation solution is prone to ill-posed problems, the embodiment of the present invention provides an array-based Channel-matched submarine horizontal array correction method and processor

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  • Seabed horizontal array shape correction method and processor
  • Seabed horizontal array shape correction method and processor
  • Seabed horizontal array shape correction method and processor

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example 1

[0107] Figure 2 - Figure 4 In a specific embodiment, numerical simulation experiment is performed using the above-described subsea horizontal array correction method. Specifically, the simulation experiment scenario is designed as follows: there are 10 acoustic source launch points in the three-dimensional scene, and the three-dimensional spatial position of the sound source launch point in the 1-10 sound source is [2735.63, 3179.05, 6], [- 111.49, 3164, 6] [- 1935.63, 2658.08, 6], [- 2743.73, 1248.87, 6], [2914.89, -1148.60, 6], [- 1972.00, -3291.72, 6], [2187.24, -3683.63, 6], [3486.20, -1752.47, 6], [4188.97, -108.33, 6] and [2066.15, 958.62, 6]. The simulation array is 128, the base spacing is 6.25m, and the array cloth is deposited is 1245m, and the position of the 128-based array is generated in accordance with the parabolic approximation method described in step 3-1. Example 1, the specific parameter is set to the first element position is set to [-369.61, -135.97, 1245], ...

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Abstract

The embodiment of the invention provides a seabed horizontal array shape correction method and device, a processor and a storage medium. The method comprises the following steps: transmitting a cooperative sound signal through a transmitting point corresponding to a seabed horizontal array laying sea area; according to the cooperative sound signal, obtaining an area position where the seabed horizontal array is arranged, a pre-deployment orientation of the seabed horizontal array, sound velocity profile data and position information of a transmitting point; acquiring an array channel response corresponding to the transmitting point; determining a copy array channel response corresponding to the array channel response according to the area position, the pre-deployment orientation, the sound velocity profile data and the position information of the transmitting point; determining a corresponding correlation peak maximum value according to the array channel response and the copy array channel response; and taking the maximum value of the correlation peak as a cost value, and determining an optimal formation parameter of the seabed horizontal array through a preset genetic algorithm.

Description

Technical field [0001] The present invention belongs to the field of sonar signal processing, and it is directed to a subsea horizontal array correction method, apparatus, storage medium, and processor based on an array channel matching. Background technique [0002] The seabed horizontal line array is an important means of underwater target detection, and a certain number of scalar (or vector) fiber (or piezoelectric) hydrophone is combined in accordance with a certain spacing. In general, the horizontal array can be placed in the bottom of the sea to achieve long-term monitoring of the seafood of interest and utilizing the low-semicobal environmental noise grade low. The water acoustic signal received based on the array is obtained by beamforming techniques, and N is the number of water hearing (i.e., array primary) in the array, improves the signal-to-noise ratio of the beam output signal. At the same time, broadband energy detection can be performed based on beam energy, achi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S15/42
CPCG01S15/42
Inventor 张兵兵朱家华张卫华彭承彦郭微吴艳群徐国军郭继周
Owner NAT UNIV OF DEFENSE TECH
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