CAJ | 학술논문

该文将相位调制信号用于机载合成孔径激光雷达，分析了3种相位调制信号的性能，研究了相位调制信号的收发方式和成像处理方法。针对机载合成孔径激光雷达观测幅宽较小的特点，对基于线性调频信号的相位调制信号，提出采用“去调相”接收方式，以大幅度降低宽带信号的 AD 采样率。对3种相位调制信号所做的成像仿真结果表明了该方法的有效性。
해문장상위조제신호용우궤재합성공경격광뢰체，분석료3충상위조제신호적성능，연구료상위조제신호적수발방식화성상처리방법。침대궤재합성공경격광뢰체관측폭관교소적특점，대기우선성조빈신호적상위조제신호，제출채용“거조상”접수방식，이대폭도강저관대신호적 AD 채양솔。대3충상위조제신호소주적성상방진결과표명료해방법적유효성。
In this study, the performance of three phase-modulated signals used in airborne Synthetic Aperture Ladar (SAL) is investigated. The transmitting and receiving modes and imaging processing methods for these signals are studied. Considering that the swath of the airborne SAL is very narrow, in order to reduce the AD sampling rate of the wideband signal, a “phase-dechirping” receiving mode is proposed for the phase-modulated signal based on the Linear Frequency Modulation (LFM) signal. The imaging simulation results for these three phase-modulated signals validate the effectiveness of the proposed method.