17 September 2013 The impact of space-time speckle to the resolution in range and azimuth direction on synthetic aperture imaging ladar
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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.
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Qian Xu, Yu Zhou, Jianfeng Sun, Ya'nan Zhi, Xiaoping Ma, Zhiwei Sun, Dong Lu, 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); doi: 10.1117/12.2022974; https://doi.org/10.1117/12.2022974
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