| 基于天基逆合成孔径激光雷达的静止轨道目标成像 |
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| 引用本文： | 阮航,吴彦鸿,张书仙. 基于天基逆合成孔径激光雷达的静止轨道目标成像[J]. 红外与激光工程, 2013, 42(6): 1611-1616 |
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| 作者姓名： | 阮航 吴彦鸿 张书仙 |
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| 作者单位： | 1.装备学院 研究生管理大队,北京101416; |
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| 摘 要： | 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。
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| 关 键 词： | 天基逆合成孔径激光雷达 静止轨道 目标监视 轨道高度 |
| 收稿时间： | 2012-10-15 |
Geostationary orbital object imaging based on spaceborne inverse synthetic aperture ladar |
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| Ruan Hang , Wu Yanhong , Zhang Shuxian. Geostationary orbital object imaging based on spaceborne inverse synthetic aperture ladar[J]. Infrared and Laser Engineering, 2013, 42(6): 1611-1616 |
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| Authors: | Ruan Hang Wu Yanhong Zhang Shuxian |
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| Affiliation: | 1.Company of Postgraduate Management,The Academy of Equipment,Beijing 101416,China;2.Department of Information Equipment,The Academy of Equipment,Beijing 101416,China;3.Beijing Institute of Tracking &Telecommunications Technology,Beijing 100094,China |
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| Abstract: | 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. |
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| Keywords: | spaceborne ISAL geostationary orbit object reconnaissance orbital altitude |
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