摘要
区别于传统遮盖式噪声,针对PSK信号具有相位键控的特点,提出了利用构造均匀分布的随机码调相噪声干扰PSK信号的方法。该噪声采用与被干扰信号相同码速率的随机码调相,与被干扰信号谱形相似,从而具有好的干扰效果。以BPSK信号模型为例,假设在接收机完成同步的条件下,导出了其影响接收机解调的误码率公式,从而证明了该噪声有较好的干扰效果。仿真实验表明本文提出的调相噪声在不同干信比条件下比传统窄带高斯噪声有更好的干扰效果。
Different from the traditional radio frequency noise, to aim at the characteristic that the PSK signal has the keying phase, the phase-modulated noise by the evenly distributed random code is proposed to jam PSK signals. With similar spectral shape, the proposed noise adopts the same code rate as that of the jammed signal so that it has good jamming effect. The error rate formula of its effect on the communication receiver is deduced under the condition that the timing synchronization has been completed, in the case of BPSK mode, so proves its good jamming effect. The simulation shows that the proposed phase-modulated noise has better jamming effect in comparison with the traditional narrow-banded Gaussian noise in the case of various JSRs （jam-to-signal ratio）.
出处
《信号处理》
CSCD
北大核心
2008年第4期538-541,共4页
Journal of Signal Processing
关键词
电子战
通信对抗
高斯噪声
通信系统
Electronic warfare
Military electronic countermeasures
Gaussian noise （electronic）
Communication systems
