摘要
声相关海流剖面 ( ACCP)测量技术对水体回波信号进行空间相关处理来估计流速值。与声学多普勒海流剖面仪 ( ADCP)相比 ACCP的工作频率低 ,更适合深海测流应用。 ACCP测量系统对回波信号进行时空相关处理 ,根据相关函数峰值的位置来估计被测水团的流速值。ACCP从信号中提取流速值要运用参数估计技术。本文介绍了采用极大似然法和最小二乘法进行流速参数估计的处理方法 。
Velocity of current in the sea can be measured using method of time - space correlation of acoustic back - scattering signals from seawater mass. According to the position of correlation function peak the ACCP equipment estimates the velocity of a moving water volume. Parameter estimation is successfully applied to measure the velocity. In this paper two methods ? maximum like - hood estimate and least equare method ? are introduced as velocity estimate method. Also some results of computer simulation are showed and explained.
出处
《海洋技术》
北大核心
2001年第1期93-96,共4页
Ocean Technology
