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角振动对合成孔径激光雷达成像的影响
引用本文:洪光烈,郭 亮.角振动对合成孔径激光雷达成像的影响[J].红外与毫米波学报,2011,30(6):571-576.
作者姓名:洪光烈  郭 亮
作者单位:1. 中国科学院上海技术物理研究所,上海,200083
2. 西安电子科技大学技术物理学院,陕西西安,710071
基金项目:973计划(2009CB724004)及中央高校基本科研业务费专项资金资助(K50510050008)
摘    要:合成孔径激光雷达采用激光作为信号载波,通过合成孔径技术实现高分辨率成像.由于激光波长较短,平台的振动将对激光雷达图像质量产生影响.基于成对回波理论,针对平台角振动对合成孔径激光雷达影响进行分析,详细推导角振动影响引起的成对回波的解析表达式,其影响表现为成对的虚假目标并且加窗压低旁瓣的处理方法对成对回波是无效的.最后通过...

关 键 词:合成孔径激光雷达  角振动  成对回波
收稿时间:2010/10/25 0:00:00
修稿时间:2011/6/27 0:00:00

Effects of angle vibration on imaging quality of synthetic aperture ladar
HONG Guang-Lie and GUO Liang.Effects of angle vibration on imaging quality of synthetic aperture ladar[J].Journal of Infrared and Millimeter Waves,2011,30(6):571-576.
Authors:HONG Guang-Lie and GUO Liang
Affiliation:(Shanghai Institute of Technical Physics, Chinese Academy of Sciences and School of Technical Physics, Xidian University
Abstract:Synthetic aperture ladar(SAL), whose carrier is laser, makes use of synthetic aperture processing to improve the resolution of images. Vibrations from the platform of SAL would have effects on the imaging quality of SAL, because of the short wavelength of laser. Firstly, based on the paired-echoes theory, the effects of angle vibration on the imaging quality are analyzed. Then, the amplitude and the position of the paired-echoes are deduced in detail. The conclusion is the effects of the vibrations would be the paired false target which the traditional windowing method to suppress the side-lobes has no effect on. Finally, the simulations prove the validity of the analysis. It provides theoretical foundation for SAL system analysis and design.
Keywords:synthetic aperture ladar  angle vibration  paired-echoes
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