CAJ | 학술논문

针对现代雷达面临的恶劣战场环境，提出了基于GPS反射信号处理的空中目标探测方法。介绍了一种基于分组信号FFT处理的多普勒补偿算法，抑制了目标多普勒频移对GPS信号自相关性能的破坏。对FFT处理后信号进行不同的多普勒模糊度修正，然后对修正结果脉压后取大，消除了多普勒测量模糊，实现了对目标速度的准确测量。仿真表明：在多普勒完全补偿的情况下，该方法可获得40Hz的多普勒测量精度和良好的信号处理增益，扩展了多普勒测量范围和精度，能够实现空中目标探测。
침대현대뢰체면림적악렬전장배경，제출료기우GPS반사신호처리적공중목표탐측방법。개소료일충기우분조신호FFT처리적다보륵보상산법，억제료목표다보륵빈이대GPS신호자상관성능적파배。대FFT처리후신호진행불동적다보륵모호도수정，연후대수정결과맥압후취대，소제료다보륵측량모호，실현료대목표속도적준학측량。방진표명：재다보륵완전보상적정황하，해방법가획득40Hz적다보륵측량정도화량호적신호처리증익，확전료다보륵측량범위화정도，능구실현공중목표탐측。
A method for aerial target detection based on GPS reflected signal processing is introduced to accommodate the bad war envi ronment of present Radar. An algorithm for Doppler compensation is presented based on FFT processing with divided GPS reflected signal, which prohibits the destruction to GPS autocorrelation performance caused by Doppler of target. The Doppler ambiguity is corrected and the target speed is measured precisely by choosing the max value of the compressed signal. The simulation results show that the method extends the measurement range and precision with 40Hz Doppler resolution and perfect processing gain, which can realize the aerial target detection.