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ECHO signal processing apparatus, underwater detection apparatus, radar apparatus, echo signal processing method, and echo signal processing program
ECHO signal processing apparatus, underwater detection apparatus, radar apparatus, echo signal processing method, and echo signal processing program
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机译:回声信号处理设备,水下检测设备,雷达设备,回声信号处理方法和回声信号处理程序
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摘要
PROBLEM TO BE SOLVED: To provide an echo signal processing device, an underwater detector, a radar apparatus, an echo signal processing method, and an echo signal processing program, which enable more reliable reduction of a reverberation signal contained in an echo signal and more reliable detection of a desired echo component contained in the echo signal.SOLUTION: An echo signal processing device 4 includes a reverberation estimation part 41 that calculates plural reverberation estimation signal levels y1(n) using plural reception signal levels x(n) obtained by sampling a reception signal in a given temporal interval. Specifically, the reverberation estimation part 41 calculates, for each reception signal level x(n), a first reference signal level z1(n) correlated with a reverberation signal level. The reverberation estimation part 41 is capable of calculating a reverberation estimation signal level y1(n) for each reception signal level x(n) on the basis of the relation between the reception signal level x(n) and first reference signal level z1(n).
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