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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 ,给出一些典型流速情形的数值计算结果
Acoustic Correlation Current Profile (ACCP) measurement technique estimates the velocity values by spatially correlating the water body echo signals. Compared to Acoustic Doppler Current Profilers (ADCPs), ACCP operates at low frequencies and is more suitable for deep sea flow measurement applications. The ACCP measurement system processes spatiotemporal correlation of the echo signals and estimates the velocity of the water mass under test based on the peak position of the correlation function. ACCP to extract the flow rate from the signal to use parameter estimation techniques. This paper introduces the method of maximum velocity and least square method to estimate the velocity parameters, and gives the numerical results of some typical flow velocity cases