The spread spectrum communication with an aperiodic PN code and under strong man-made jammers has an important significance in military communications.
强人为干扰环境下的非周期扩频码的扩频通信在军事上具有重要的意义。
Merits of the Linear FM are that it is not necessary to have an equalizer or the spread spectrum code modulation.
线性调频调制的优点是：不须在接收端添加均衡滤波器，也不须进行扩频编码。
Then digital matched filter (DMF), which is used to synchronize spread spectrum code, especially the multi-rate sampling in DMF is studied.
然后探讨了用于扩频码同步的数字匹配滤波器（DMF），着重分析了DMF的多倍码速率采样问题；
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