一种短波差分跳频信号检测方法  

A detection method of DFH signals

作　　者：袁子立[1,2] 何遵文[2] 

机构地区：[1]海军装备研究院,北京102249 [2]北京理工大学信息科学技术学院,北京100081

出　　处：《舰船科学技术》2009年第1期86-89,共4页Ship Science and Technology

基　　金：北京理工大学校基础研究基金项目资助(BIT-UBF-20051F4218)

摘　　要：短波差分跳频通信跳速高、信息速率高、抗干扰性能好,具有良好的应用前景。低信噪比下跳频信号的检测是短波差分跳频的关键技术之一,为提高低信噪比下短波差分跳频信号的检测性能,提出了一种基于切片瞬时四阶矩相位信息的跳频信号检测方法。理论分析和仿真结果表明,该方法对噪声具有较好的鲁棒性,在低信噪比情况下,检测性能较传统的基于瞬时相关函数的方法有明显改善,而计算量相当,具有实际应用价值。Difference Frequency Hooping（DFH） short-wave communications have a good prospect because of its high hopping speed, high information speed and good anti-jamming performance. The detecting performance of SW DFH signals at low SNR is one of the key technologies. In order to improve the performance, a new method based on the phase information of the Sliced Instantaneous Higher-Order Moments（S-IHOM） has been proposed. The results show that the S-IHOM of FH signals is less sensitive to noise than the IFC of FH signals, and have much better performance at lower SNR while have similar amount of computation.

关 键 词：差分跳频 检测 瞬时相关函数 Wigner高阶谱 跳频信号 

分 类 号：TN97[电子电信—信号与信息处理]