摘要
针对基于二次功率谱的直扩信号检测方法在Alpha稳定分布噪声下失效的问题,对二次功率谱进行了扩展,提出了广义二次功率谱的概念。在此基础上,分析了直扩信号的广义二次功率谱特性,提取其中的脉冲谱线作为检测特征,实现了Alpha稳定分布噪声下直扩信号的有效检测。仿真结果表明,该方法在Alpha稳定分布噪声和高斯噪声下都有很好的检测效果。
The detection algorithm of DSSS based on power spectrum reprocessing will significantly degrade in Alpha-stable distribution noise environment noise, in order to solve this problem, the concept of generalized power spectrum reprocessing was proposed.On the basis of studying the generalized power spectrum reprocessing feature of the DSSS, the pulse spectrum was extracted as the detection feature to achieve effective detection.Simulation results show that the performance of this method have good performance both in the Alphastable distribution noise and the Gaussian noise.
作者
杨伟超
杨新权
YANG Wei-chao;YANG Xin-quan(China Academy of Space Technology(Xi’an),Xi’an Shaanxi 710100,China)
出处
《通信对抗》
2017年第4期1-5,12,共6页
Communication Countermeasures
基金
国家自然科学基金(61471294)
总装预研基金(9140A21040114HT05336)
