CAJ | 학술논문

在阵列信号处理中，信号相关性的问题很容易引起混淆。一些文献简单地认为多径信号之间必定相干，从而在仿真实验中得出了不正确的结论。该文从信号相关性的基本概念出发，推导了单频点信号和带通信号下的互相关系数表达式，讨论了多径效应下信号之间的相关性，并指出了导致多径时延信号相关的各种参数，最后通过计算机仿真验证了文中的结论。
재진렬신호처리중，신호상관성적문제흔용역인기혼효。일사문헌간단지인위다경신호지간필정상간，종이재방진실험중득출료불정학적결론。해문종신호상관성적기본개념출발，추도료단빈점신호화대통신호하적호상관계수표체식，토론료다경효응하신호지간적상관성，병지출료도치다경시연신호상관적각충삼수，최후통과계산궤방진험증료문중적결론。
The issue of signal correlation is likely confused in array signal processing. In some published literatures, the muhipath signals were simply considered as coherent signals, and then incorrect conclusion was obtained in simulation experiments. Starting from basic concept of signal correlation, expressions of cross correlation coeffi- cient are derived from single frequency signal and band-pass signals. In addition, the correlation of multipath sig- nals is discussed and the corresponding parameters associated with muhipath time delay signal are also indicated. Finally, the conclusions in the paper are validated by computer simulations.