Stepped frequency chirp signal imaging radar jamming using two-dimensional nonperiodic phase modulation  

作　　者：Qihua WU Feng ZHAO Tiehua ZHAO Xiaobin LIU Junjie WANG Shunping XIAO 

机构地区：[1]State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System,National University of Defense Technology,Changsha 410073,China

出　　处：《Frontiers of Information Technology & Electronic Engineering》2023年第3期433-446,共14页信息与电子工程前沿（英文版）

基　　金：Project supported by the Natural Science Foundation of Hunan Province,China(No.2022JJ40561);the Scientific Research Program of National University of Defense Technology,China(No.ZK22-46);the National Natural Science Foundation of China(Nos.61890542,62001481,and 62071475)。

摘　　要：Stepped frequency chirp signal obtains high-resolution radar images by synthesizing multiple narrowband chirp pulses.It has been one of the most commonly used wideband radar waveforms due to its lower demand for radar instant bandwidth.In this paper,we propose a radar jamming method using two-dimensional nonperiodic phase modulation against stepped frequency chirp signal imaging radar.Using the unique property of nonperiodic phase modulation,the proposed method can generate high-level sidelobes that perform as a special blanket jamming along both the range and azimuth directions and make the target unrecognizable.Then,the influence of different modulation parameters,such as the code width and duty ratio,are further discussed.Based on this,the corresponding parameter design principles are presented.Finally,the validity of the proposed method is demonstrated by the Yake-42 plane data simulation and measured unmanned aerial vehicle data experiment.

关 键 词：Radar jamming Stepped frequency chirp signal Nonperiodic phase modulation Wideband radar 

分 类 号：TN974[电子电信—信号与信息处理]