EVOLUTIONARY SPECTRA OF BACKSCATTERING WAVE IN MOVING MEDIUM

被引：0
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作者：
朱维庆
机构：
来源：
ChineseJournalofAcoustics | 1988年 / 01期
关键词：
exp; EVOLUTIONARY SPECTRA OF BACKSCATTERING WAVE IN MOVING MEDIUM;
D O I：
10.15949/j.cnki.0217-9776.1988.01.001
中图分类号：
学科分类号：
摘要：
In this paper,we discuss the backscattering wave of sonar,radar and sodar in moving medium,which is anon-stationary stochastic process even if its energy attenuation is compensated.The evolutionary spectra are agood approach to describe it,both the non-stationary factor A(ω) and the characteristic width Baresignificant.When the time interval corresponding to the volume element of the scatterers is smaller than B,we can suppose that the power spectrum displays a single hump characteristic,and when it is larger than B,we may use the power spectrum which displays a bi-hump characteristics.The transmitted signal which hasslow varing ambiguity function can reduce the effect of A,(ω).
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页码：1 / 8
页数：8
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