摘要
本文首先探讨浅海声信道中多途的统计特性,在此基础上分析了DTCCA和DTACA抗多途的性能。理论估算和实验证明,这类信号处理方式抗多途性能是优越的,可以利用多途能量。
The multipath effect is strong in shallow-water acoustical channel. This paper discusses especially this problem.
The statistic characteristics of multipath in shallow-water are first described, then the anti-mu-ltipath ability in the auto-correlative and cross-correlative accumulation systems are analysed, The detection probability taking multiphath into acount are estimated. Theoretical estimations and experiments in site for some sonar systems have proved that both the auto-correlative and the cross-correlative accumulation have a high anti-mukipath ability and even make the multipath energy useful.
出处
《声学学报》
EI
CSCD
北大核心
1990年第5期389-396,共8页
Acta Acustica
基金
国家自然科学基金
