【摘要】 基于回波信号的波形不变性原理，利用维纳－辛钦定理推导出了回波信号的相关函数在峰值的６１％处的宽度与船速成简单的反比关系．仿真结果证明：船速越高，相关峰越尖锐，测速误差越小．更多还原

【Abstract】 By the Wiener-khinchine theorem, a detailed derivation is made that the correlation function width at 61 percent of peak is simply inverse proportion to the ship velocity, therefore, the bigger the ship velocity is, the more acute the correlation peak is, and the smaller the errors of the time-delay τ and the ship velocity are. The mathematical model of the temporal correlation log is built and computer simulation is provided with result according to the theoretical analysis.更多还原