摘要
浅海多途效应形成了在距离-频率平面的干涉谱图,本文利用距离域干涉谱提取干涉准周期作为反演匹配物理量,在单无限均匀海底模型的基础上,以最小均方差原则建立代价函数,通过模拟退火法搜索最优解,提出一种海底参数反演方法。仿真结果表明,该方法反演所得参数在典型负跃层剖面下能有效地用于声场预报。
Coherent structure has been leaded by multipath propagation in a shallow-water environment in the received field, both spatially and temporally. In this paper, range domain interference spectrum extraction cycle is used as a matching physical quantity. On the basis of single homogeneous infinite ocean model, the optimal solution has been searched through the simulated annealing method which established with minimum mean square error cost function, and a seafloor parameters inversion method has been put forward. Simulation results show that the method of inversion obtained parameters can be effectively applied to acoustic field prediction.
出处
《科技视界》
2015年第32期98-99,共2页
Science & Technology Vision
关键词
距离域
干涉谱图
浅海
地声反演
声场预报
Range domain
Interference spectrum
Shallow water
Inversion
Acoustic field prediction
