摘要
非合作无人机机动性强、易被建筑物遮挡,往往具备信号截获能力,给传统雷达探测带来严峻挑战。对此,提出基于粒子采样投影的恒模波形设计方法来获得局部低旁瓣、低截获波形。首先,利用混沌相位编码的随机性构造复合波形,增强波形低截获性能;接着,引入低旁瓣波形设计的数学模型,并转化为多变量交替范数迭代优化问题;进而,借鉴粒子滤波采样思想、交替投影框架,构建粒子集群同步投影、采样更新机制。仿真实验表明,所提算法运算效率高、稳定性强,波形兼具低旁瓣、低截获与多普勒容忍性,与当前流行算法相比具有显著优势。
Non-cooperative unmanned aerial vehicles are often highly maneuverable and easily sheltered by buildings when probing and detecting,and they usually posses the ability of signal interception,which brings severe challenge to traditional radar.To tackle this problem,this paper proposes a method based on particles sampling projection(PSP)to design constant-modulus waveforms with local low sidelobe and low intercept probability.Firstly,the randomness of chaotic phase coding is used to construct the composite waveform to enhance the performance of low interception.Secondly,the mathematical model of low range sidelobes is introduced and transformed into a multi-variable alternating norm-optimization problem.Furthermore,the particles-set synchronous projection and sampling updating mechanism are both constructed,based on the particle filter sampling thinking and alternating projection framework.Finally,simulation results show that the proposed algorithm has higher efficiency,lower range sidelobes,low probability of interception and also with Doppler tolerance,which has significant advantages over popular ones.
作者
冯翔
李风从
范羽
刘涛
崔文卿
赵宜楠
FENG Xiang;LI Fengcong;FAN Yu;LIU Tao;CUI Wenqing;ZHAO Yinan(School of Information Science and Engineering,Harbin Institute of Technology(Weihai),Weihai 264209,China)
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2023年第4期1008-1015,共8页
Systems Engineering and Electronics
基金
国家自然科学基金(61771160)
山东省自然科学基金(ZR2019BF037)资助课题。
关键词
智能雷达
粒子滤波
局部低旁瓣
低截获率
相位编码波形
intelligent radar
particle filter
local low sidelobes
low probability of interception
phase-coded waveform
