窄带FFH/MFSK系统多音干扰抑制方法  

Method for Multi-tone Jamming Rejection in FFH/MFSK System

作　　者：陈亚丁[1] 程郁凡[1] 李少谦[1] 李功明[1] 

机构地区：[1]电子科技大学通信抗干扰技术国家级重点实验室,610054

出　　处：《电子科技大学学报》2010年第3期346-350,共5页Journal of University of Electronic Science and Technology of China

基　　金：国家自然科学基金(60502010);国家基础科研项目(A1420080150);国家重点实验室基金(9140C0204010703)

摘　　要：通信对抗是现代军事通信中的重要组成部分.在最坏情况多音干扰环境中,一种应用于窄带快速跳频通信系统的干扰抑制方法被提出。与分集合并方式的干扰抑制机制不同,在该方法中的系统接收端利用频率直方图和包络检测,完成对接收信号中敌意多音干扰的认知和抑制,在不降低系统频带利用率条件下,提高了窄带FFH/MFSK系统的传输性能。数据分析和仿真表明,通过该抑制方法,可使系统在相关干扰时间内的抗干扰性能,较传统的分集合并干扰抑制方法提高约10 dB,且运算复杂度低,具有较好的可实现性。Communication countermeasure is an important component of contemporary militarycommunications. An anti-jamming method applied in FFH/MFSK systems is introduced under a worst-case bandmulti-tone jamming （MTJ）. Different from anti-jamming principle of combine and diversity technology, the systemreceiver in this method has implemented cognition and suppression of multi-tone jamming without side informationbased on frequency histogram and envelope detection, thereby, improving the transmission performance of systemwith no loss of frequency band efficiency. Further analysis and simulation indicate that the system anti-jammingperformance, using this method presented in this paper, could be improved about 10 dB better than conventionalcombining and diversity method within correlative jamming time. The method shows both low complexity andrealizability.

关 键 词：通信对抗 频率直方图 跳频 军事通信 多音干扰 

分 类 号：TN914.43[电子电信—通信与信息系统]