Target signal extraction method based on frequency domain-wave number domain deconvolution

Target signal extraction method based on frequency domain-wave number domain deconvolution

The invention relates to the field of underwater acoustic signal processing and particularly relates to a target signal extraction method based on frequency domain-wave number domain deconvolution. The method comprises steps of receiving a time domain array signal collected by an underwater acoustic...

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Hauptverfasser: JU DONGHAO, HUANG HAINING, JIN SHENGLONG, LI YU, WANG YUJIE, LI ZIGAO, NING JIANGBO, CHI CHENG, LI SHUQIU
Format: Patent
Sprache:chi ; eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
HANDLING RECORD CARRIERS
PHYSICS
PRESENTATION OF DATA
RECOGNITION OF DATA
RECORD CARRIERS
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creator JU DONGHAO
HUANG HAINING
JIN SHENGLONG
LI YU
WANG YUJIE
LI ZIGAO
NING JIANGBO
CHI CHENG
LI SHUQIU
description The invention relates to the field of underwater acoustic signal processing and particularly relates to a target signal extraction method based on frequency domain-wave number domain deconvolution. The method comprises steps of receiving a time domain array signal collected by an underwater acoustic uniform linear array, and converting the array signal from an array element domain-time domain to a frequency domain-wave number domain; establishing a spatial modal sensing matrix; estimating a spatial modal spectrum contained in the frame of data by using a deconvolution algorithm in combination with the spatial modal sensing matrix on a frequency domain-wave number domain; and enabling the wave number to correspond to the azimuth at different frequency points, converting the spatial modal spectrum into an azimuth-frequency domain beam spectrum, and extracting a frequency domain signal of the target according to the azimuth of the target. According to the method, a problem of target signal aliasing of convention
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subjects CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
HANDLING RECORD CARRIERS
PHYSICS
PRESENTATION OF DATA
RECOGNITION OF DATA
RECORD CARRIERS
title Target signal extraction method based on frequency domain-wave number domain deconvolution
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