一种针对直扩系统的高效干扰方案

扫频干扰是针对直扩系统的一种常用干扰手段，但传统扫频干扰对频率信息未加利用 ，存在干扰效率低下的问题，为此提出了一种基于载频估计的区间扫频干扰方法，通过接收 机对直扩信号进行载频估计，干扰机利用估计的载频确定干扰区间，并在其中进行扫频干扰 。通过分析及仿真验证，证明了这种方法减小了扫频范围，相比传统的扫频干扰能够有效 提高干扰效率，同时相比单/多音等形式的干扰降低了对载频估计的要求。

An effective jamming method for DSSS systems

The frequency sweeping jamming is one of the commonly used jamming met hods for Direct Sequence Spread Spectrum (DSSS) systems. But usually this met hod makes no use of the frequency information, which leads to a poor efficiency. So a frequency sweeping method based on the carrier frequency estimation is pre sented,that is, the carrier frequency of DSSS signal is estimated by receiver a nd the jammer uses the estimated carrier frequency to choose a region in which s we eping jamming is performed. The result of analysis and simulation shows that this method can increase the jamming efficiency when compared with the general s weeping methods, while also reduce the requirement of estimation when compared w ith the single/multi tone jamming methods at the same time.