火力与指挥控制2017，Vol.42Issue(2)：25-28,33,5.
基于FrFT的差分跳频通信LFM干扰抑制算法
A Method of LFM Interference Suppression for DFH Communication Based on FrFT
摘要
Abstract
Direct to the poor ability of DFH Communication System to anti LFM interference. Using the different slope parameters of FM between the DFH signals and LFM signals,the frequency modulation slope K and the rotating order 琢 of LFM interference signal are estimated. The estimation accuracy is improved by combining with the section and mean treatment. Furthermore,the LFM signal components in the fractional frequency domain dimensional parameter plane (琢,滋) are replaced by using the mean plane outside the LFM interference signal frequency band. The LFM interference signal is suppressed in DFH communication. The simulation results show that the algorithm can effectively mitigate LFM interference in DFH communication to improve the SNR about 11 dB.关键词
差分跳频/FrFT/干扰抑制/LFMKey words
differential frequency hopping/FrFT/Interference mitigation/linear frequency modulation分类
信息技术与安全科学引用本文复制引用
李喆,李潇,钱博..基于FrFT的差分跳频通信LFM干扰抑制算法[J].火力与指挥控制,2017,42(2):25-28,33,5.基金项目
国家自然科学基金(61301256) （61301256）
辽宁省教育厅科学研究基金(L2015462) （L2015462）
沈阳理工大学辽宁省信息网络与信息对抗技术重点实验室开放基金资助项目 （）
