有关CST MWS的Cross-Correlation仿真请教各位

在仿真天线的时候，需要求出两个信号的Cross-Correlation，根据cst的帮助文件可以得到这样的提示Calculates the Cross Correlation of two signals. In signal processing, cross-correlation is a measure of similarity of two waveforms as a function of a time-lag applied to one of them. This is also known as a sliding dot product or inner-product.
For signals in which the amplitude can vary, the Cross Correlation can first be normed. In this case, the Cross Correlation of two signals with identical shape will lead to a maximum correlation of 1. The position of the maximum is then the time shift between the two signal.。但是小弟怎么也求不出结果，有那位高人指点一下怎么去设置！不胜感激！

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