Far-field outdoor experimental demonstration of down-looking synthetic aperture ladar

Guangyuan Li; Zhiyong Lu; Yu Zhou; Jianfeng Sun; Qian Xu; Chenzhe Lao; Hongyu He; Guo Zhang; Liren Liu

doi:10.3788/COL201715.082801

Journals >Chinese Optics Letters >Volume 15 >Issue 8 >Page 082801 > Article

Chinese Optics Letters
Vol. 15, Issue 8, 082801 (2017)

Far-field outdoor experimental demonstration of down-looking synthetic aperture ladar

Guangyuan Li^1,2, Zhiyong Lu¹, Yu Zhou¹, Jianfeng Sun^1,*..., Qian Xu¹, Chenzhe Lao^1,2, Hongyu He^1,2, Guo Zhang^1,2 and Liren Liu¹|Show fewer author(s)

Author Affiliations

¹Key Laboratory of Space Laser Communication and Detection Technology, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

²University of Chinese Academy of Sciences, Beijing 100049, China

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DOI: 10.3788/COL201715.082801 Cite this Article Set citation alerts

Guangyuan Li, Zhiyong Lu, Yu Zhou, Jianfeng Sun, Qian Xu, Chenzhe Lao, Hongyu He, Guo Zhang, Liren Liu, "Far-field outdoor experimental demonstration of down-looking synthetic aperture ladar," Chin. Opt. Lett. 15, 082801 (2017) Copy Citation Text

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Abstract

A specific system structure of down-looking synthetic aperture imaging ladar (SAIL) is given, and a far-field experiment over 6 km of down-looking SAIL under this system design is carried out. The down-looking SAIL can overcome the influence of atmospheric turbulence to a great extent. By applying this system design, it also has advantages in self-compensating phase modulation. A fine image is obtained after aligning in the orthogonal direction and phase error compensation in the travel direction based on a dominant scatterer. The achieved imaging resolutions in the two dimensions are both better than 5 cm.