光学学报, 2016, 36 (8): 0828001, 网络出版: 2016-08-18
直视合成孔径激光成像雷达滑动聚束模式下图像信噪比研究
Research on the Signal-to-Noise Ratio in Sliding Spotlight Mode Down-Looking Synthetic Aperture Imaging Ladar
成像系统 合成孔径激光成像雷达 滑动聚束模式 信噪比 imaging systems synthetic aperture imaging ladar sliding spotlight mode signal-to-noise ratio
摘要
用15 m的平行光管模拟远场条件对直视合成孔径激光成像雷达(SAIL)的滑动聚束模式进行了研究。基于单点目标回波收集方程，分析了滑动聚束的信噪比特性，理论和实验证实滑动聚束模式可以通过延长有效采集时间长度的方式提高信噪比。
Abstract
Under far field simulated conditions by using collimator with 15 m focal length, we present a sliding spotlight mode of the down-looking synthetic aperture imaging ladar (SAIL). Based a single point target echo collection equation, the signal-to-noise ratio in sliding spotlight mode is analysed. Theory and experiment confirm that the sliding spotlight mode can improve signal-to-noise ratio when we can extend the effective acquisition time length.
张宁, 卢智勇, 孙建锋, 周煜, 栾竹, 李光远, 刘立人. 直视合成孔径激光成像雷达滑动聚束模式下图像信噪比研究[J]. 光学学报, 2016, 36(8): 0828001. Zhang Ning, Lu Zhiyong, Sun Jianfeng, Zhou Yu, Luan Zhu, Li Gunagyuan, Liu Liren. Research on the Signal-to-Noise Ratio in Sliding Spotlight Mode Down-Looking Synthetic Aperture Imaging Ladar[J]. Acta Optica Sinica, 2016, 36(8): 0828001.
PDF全文
