The impact of space-time speckle to the resolution in range and azimuth direction on synthetic aperture imaging ladar

Qian Xu; Yu Zhou; Jianfeng Sun; Ya'nan Zhi; Xiaoping Ma; Zhiwei Sun; Dong Lu; Liren Liu

doi:10.1117/12.2022974

17 September 2013 The impact of space-time speckle to the resolution in range and azimuth direction on synthetic aperture imaging ladar

Qian Xu, Yu Zhou, Jianfeng Sun, Ya'nan Zhi, Xiaoping Ma, Zhiwei Sun, Dong Lu, Liren Liu

Author Affiliations +

Proceedings Volume 8877, Unconventional Imaging and Wavefront Sensing 2013; 88770K (2013) https://doi.org/10.1117/12.2022974
Event: SPIE Optical Engineering + Applications, 2013, San Diego, California, United States

Abstract

As synthetic aperture imaging ladar employs the linear chirp laser signal, it is inevitably impacted by the space-time varying speckle effect. In many SAIL two-dimensional reconstructed images, the laser speckle effect severely reduces the image quality. In this paper, we analyze and simulate the influence of space-time speckle effect to the resolution element imaging both in range direction and in azimuth direction. Expressions for two-dimensional data collection contained space-time speckle effect are obtained, and computer simulation results of resolution degradation both in range direction and in cross-range direction are presented.

Citation Download Citation

Qian Xu, Yu Zhou, Jianfeng Sun, Ya'nan Zhi, Xiaoping Ma, Zhiwei Sun, Dong Lu, and Liren Liu "The impact of space-time speckle to the resolution in range and azimuth direction on synthetic aperture imaging ladar", Proc. SPIE 8877, Unconventional Imaging and Wavefront Sensing 2013, 88770K (17 September 2013); https://doi.org/10.1117/12.2022974

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