LPI radar sequence design against cyclostationary analysis  

作　　者：Qiang Liu Fucheng Guo Kunlai Xiong Xi Li Guizhou Wu Weidong Hu 

机构地区：[1]College of Electronic Science and Technology,National University of Defense Technology(NUDT),Changsha,410073,Hunan,China

出　　处：《Defence Technology(防务技术)》2025年第3期227-237,共11页Defence Technology

基　　金：support of the National Natural Science Foundation of China under grant numbers 62101570 and 61901494;financial support has played a crucial role in the successful completion of this research.

摘　　要：In this paper,we present a novel unimodular sequence design algorithm based on the coordinate descent(CD)algorithm,aimed at countering electronic surveillance(ES)systems based on cyclostationary analysis.Our algorithm not only provides resistance against cyclostationary analysis(CSA)but also maintains low integrated sidelobe(ISL)characteristics.Initially,we derive the expression of the cyclostationary feature(CSF)detector and simplify it into an iterative quadratic form.Additionally,we derive a quadratic form to ensure the similarity of the autocorrelation sidelobes.To balance the minimization of the detection probability and the ISL values,we introduce a Pareto scalar that transforms the multiobjective optimization problem into a convex combination of objective functions.This approach allows us to find an optimal trade-off between the two objectives.Finally,we propose a monotonic algorithm based on the CD algorithm to counter CSA analysis.This algorithm efficiently solves the optimization problem mentioned earlier.Numerical experiments are conducted to validate the correctness and effectiveness of our proposed algorithm.

关 键 词：ISL Waveform design Low probability of intercept(LPI) CSA CD algorithm 

分 类 号：TN9[电子电信—信息与通信工程]