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本文根据等效线性系统模型法,推导出了伪码对N倍钟码进行数字调制后,所得复合码的自相关函数和功率谱的一般表达式。这个方法对奇数倍钟码或偶数倍钟码均适用。文中举出了一种特定复码作为这种方法的说明。
According to the equivalent linear system model method, the general expression of autocorrelation function and power spectrum of the composite code obtained after the pseudo-code is digitally modulated by N times of code is deduced. This method works well for odd or even numbers. The article gives a description of a specific complex code as this method.