In fact, as the result of the period of a PN code, cyclostationarity is a key property of DSSS signal.

事实上，由于伪码的周期性而导致的循环平稳是扩频信号的一个重要特征。

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As the PN-code high performance of long period and the coherence, the very long distance and high precision ranging can be reached at the same time. Multi-target TT&C can be reached by CDMA of PN.

由于伪随机码固有的测距能力——其长周期和互相关特性，使得在测距距离和精度方面可以同时提高，采用码分多址技术可以实现对多个目标同时进行测控。

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