【作者】 刘杰；

【导师】 高会生；

【作者基本信息】 华北电力大学 ， 通信与信息系统， 2002， 硕士

【摘要】 直接序列扩频通信系统通常工作于低信噪环境中，接收机以扩频码对信号相关解扩提取信息。为适应电子战中对直扩信号侦察的需要，本文提出一种了无码解扩的方案，采用从直扩信号中获得本地参考信号的方法，可以在没有扩频码的情况下，截获低信噪比直扩信号的通信信息。更多还原

【Abstract】 Direct Sequence Spread Spectrum (DSSS) system usually operates in the condition of low Signal-to-Noise Ratio (SNR). The receiver extracts information from the signal through correlation operation by the spread code. In order to meet the needs of DSSS signal reconnaissance, a method of dispreading without the code is brought forward by this paper， in which the local code is gained from the DSSS signal. So we can intercept DSSS signal with low SNR even if the spreading code is unknown. Liu Jie (Communication and Information System) Directed by Prof. Gao Huisheng更多还原