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bo xing xuan tong qi
Author(s): 
Pages: 38-40
Year: Issue:  4
Journal: Ocean Technology

Keyword:  反射波直达波频谱分析仪采样时间选通信号分析波形线性传输单稳态鉴别器;
Abstract: <正> 一、引言在进行海洋爆炸声传播信号分析时,需要同时分析直达波和反射波。我们希望:在分析直达波时,需把反射波去掉;反之,分析反射波时需把直达波去掉。去掉反射波,可直接调整频谱分析仪的采样时间。(因反射波在后)而想去掉直达波,保留反射波,依靠调整采样时间就无能为力了。为此,研制了波形选通器,可方便地达到上述目的。二、方案的考虑1.输入门限电平的选择:由于声源距离及传播条件的影响,海上
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