CAJ | 학술논문

　　由于没有大气扰动的影响，利用天基逆合成孔径激光雷达(ISAL)对静止轨道目标成像成为可能。初步设计了对静止轨道目标成像的天基ISAL的运行轨道，分别分析了在顺行轨道和逆行轨道下，天基ISAL轨道高度对重访周期、成像分辨率和成像积累时间的影响；给出了ISAL方位成像的最小无模糊脉冲重复频率(PRF)，分析了回波信噪比与成像距离、收发孔径之间的关系。研究结果表明，利用逆行轨道的天基ISAL对静止轨道目标成像是初步可行的。
　　유우몰유대기우동적영향，이용천기역합성공경격광뢰체(ISAL)대정지궤도목표성상성위가능。초보설계료대정지궤도목표성상적천기ISAL적운행궤도，분별분석료재순행궤도화역행궤도하，천기ISAL궤도고도대중방주기、성상분변솔화성상적루시간적영향；급출료ISAL방위성상적최소무모호맥충중복빈솔(PRF)，분석료회파신조비여성상거리、수발공경지간적관계。연구결과표명，이용역행궤도적천기ISAL대정지궤도목표성상시초보가행적。
Without the turbulence of atmosphere, it is possible to image geostationary orbital objects via spaceborne inverse synthetic aperture ladar (ISAL). The orbital altitude of spaceborne ISAL for geostationary orbital objects imaging was preliminary designed, the influence of orbital altitude on revisiting period, imaging resolution and coherent accumulation time was analyzed in direct orbit and retrograde orbit, respectively. The minimum pulse repetition frequency (PRF) for unambiguous azimuth imaging was presented, and relations between imaging range, transmit-receive aperture diameter and SNR were analyzed. The results show that it is initial feasible to image geostationary orbital objects using spaceborne ISAL in retrograde orbit.