CAJ | 학술논문

针对压缩感知理论应用于大时宽带宽积信号转发干扰时所存在的干扰时效性不强、原子库数据量庞大的问题，设计了固定的波形匹配原子库和降调频采样矩阵，并提出一种降调频逼近算法，用以实现间歇采样转发干扰。通过仿真实验对奈奎斯特采样、Chirplet 原子库、本文波形匹配原子库等3种方法进行效果对比，验证了本文研究方法在具备较强干扰时效性的基础上，可以实现原子库复用，有效降低原子数量。
침대압축감지이론응용우대시관대관적신호전발간우시소존재적간우시효성불강、원자고수거량방대적문제，설계료고정적파형필배원자고화강조빈채양구진，병제출일충강조빈핍근산법，용이실현간헐채양전발간우。통과방진실험대내규사특채양、Chirplet 원자고、본문파형필배원자고등3충방법진행효과대비，험증료본문연구방법재구비교강간우시효성적기출상，가이실현원자고복용，유효강저원자수량。
Aiming at the problems including weak timeliness and huge atom library data when compressed sensing theory is applied to retransmitted jamming for signal with large time-band pro-duct,this paper designs a constant waveform matching dictionary and a down-chirp sensing matrix and proposes a down-chirp approximation algorithm to achieve interrupted-sampling and repeater jam-ming.In accordance with the effect comparison of three methods,i.e.Nyquist sampling,Chirplet at-om dictionary and wave-matching dictionary by simulation experiment,it is verified that method pro-posed in this paper can achieve the reutilization of the atom dictionary and the reduction of the atom number on the basis of strong jamming timeliness.