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12 .9 m 高分辨率合成孔径激光雷达成像

High Resolution Synthetic Aperture Ladar Imaging at 12.9 m Distance

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摘要

报道了一个条带模式合成孔径激光雷达(SAL)实验室高分辨率成像结果。以0.5 mm×0.5 mm 的等效收发口径,在一个12.9 m 距离上,实现了高分辨率SAL 成像,获得了照片级的高质量图像。图像的方位合成孔径分辨率超过真实口径衍射极限分辨率的100 倍。详细给出了合作目标和漫反射目标的距离压缩像、方位聚焦像和相位梯度自聚焦(PGA)处理像。实验数据展现了清晰的SAL 图像形成过程,显示出了各处理步骤的典型聚焦效果。实验结果演示了PGA 在SAL图像处理中的稳健聚焦能力,多次迭代能较大幅度地提高成像质量。

Abstract

The high resolution imaging result of a laboratory-scale stripmap mode synthetic aperture ladar (SAL) is reported. The high resolution SAL imaging is realized utilizing an equivalent transmitting/receiving aperture of 0.5 mm×0.5 mm,and the high resolution images with picturesque high quality are generated at target distance of 12.9 m. The azimuth resolution synthetic aperture of the SAL images is over 100 times better than the real aperture diffraction limited resolution. The range compressed images of cooperative target and diffusive target, azimuth focused images and phase gradient autofocus (PGA) processed images are given in detail. Experimental figures display a clear SAL image formation process with the typical focused images of every processing step. Experimental results show that PGA has very robust focusing ability in SAL image processing, multiple iterations can greatly improve the imaging quality.

Newport宣传-MKS新实验室计划
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中图分类号:TN958

DOI:10.3788/aos201535.1228002

所属栏目:遥感与传感器

基金项目:国家自然科学基金(61178071)

收稿日期:2015-06-09

修改稿日期:2015-07-28

网络出版日期:--

作者单位    点击查看

吴谨:中国科学院电子学研究所, 北京 100190
赵志龙:中国科学院电子学研究所, 北京 100190中国科学院大学, 北京 100049
吴曙东:中国科学院电子学研究所, 北京 100190中国科学院大学, 北京 100049
段洪成:中国科学院电子学研究所, 北京 100190中国科学院大学, 北京 100049
唐永新:中国科学院电子学研究所, 北京 100190
黄文武:中国科学院电子学研究所, 北京 100190

联系人作者:吴谨(jwu909@263.net)

备注:吴谨(1965—),男,博士,研究员,主要从事激光雷达及脉冲气体激光器等方面的研究。

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引用该论文

Wu Jin,Zhao Zhilong,Wu Shudong,Duan Hongcheng,Tang Yongxin,Huang Wenwu. High Resolution Synthetic Aperture Ladar Imaging at 12.9 m Distance[J]. Acta Optica Sinica, 2015, 35(12): 1228002

吴谨,赵志龙,吴曙东,段洪成,唐永新,黄文武. 12 .9 m 高分辨率合成孔径激光雷达成像[J]. 光学学报, 2015, 35(12): 1228002

被引情况

【1】吴曙东,黄建余,赵志龙,王鲲鹏,戴泽,吴谨. 聚束模式合成孔径激光雷达实验演示. 光学学报, 2016, 36(6): 628001--1

【2】卢智勇,周煜,孙建峰,栾竹,王利娟,许倩,李光远,张国,刘立人. 机载直视合成孔径激光成像雷达外场及飞行实验. 中国激光, 2017, 44(1): 110001--1

【3】孙力帆,张 森,冀保峰,普杰信. 基于改进豪斯多夫距离的扩展目标形态估计评估. 光学学报, 2017, 37(7): 728003--1

【4】吕亚昆,吴彦鸿. 合成孔径激光雷达成像发展及关键技术. 激光与光电子学进展, 2017, 54(10): 100004--1

【5】陈波,孙天齐,刘爱新,杨旭. 分布式孔径综合成像系统旋转和放大率误差的校正. 激光与光电子学进展, 2018, 55(1): 11102--1

【6】孙力帆,何子述,冀保峰,张森,普杰信. 基于高精度传感器量测的机动扩展目标建模与跟踪. 光学学报, 2018, 38(2): 228001--1

【7】李光远,卢智勇,周煜,孙建锋,许倩,劳陈哲,贺红雨,张国. 直视逆合成孔径激光成像雷达外场实验. 光学学报, 2018, 38(4): 401001--1

【8】李明磊,吴 谨,白 涛,万 磊,李丹阳. 大随机相位误差下条带模式合成孔径激光雷达成像实验. 中国光学, 2019, 12(1): 130-137

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