论文部分内容阅读
讨论了用窄带接收机测量宽带干扰信号到达时差时,由干扰源或接收机的运动导致的相对速度对时差测量精度的影响,给出了最大似然估计和直接相关估计的估计精度。结果表明,直接相关估计是有偏估计,但其方差与最大似然估计相同。
The influence of the relative speed caused by the interference source or the receiver on the time difference measurement when the narrowband receiver is used to measure the arrival time difference of the broadband interference signal is discussed. The estimation accuracy of maximum likelihood estimation and direct correlation estimation is given. The results show that the direct correlation estimation is biased, but the variance is the same as the maximum likelihood estimation.