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27 August 2009 Research on inverse synthetic aperture ladar
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Proceedings Volume 7382, International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging; 73821J (2009) https://doi.org/10.1117/12.836538
Event: International Symposium on Photoelectronic Detection and Imaging 2009, 2009, Beijing, China
Abstract
Heterodyne detection based on the inverse synthetic aperture ladar (ISAL) can obtain useful information such as phase and amplitude and frequency of the moving target. Through analysis of these information, we can conclude the exact appearance, orientation and other characteristic about the target. However, the heterodyne detection is usually difficult to accomplish. The difficulties lie in two main aspects: the first one is that the wavefront of returned signal wave and local-oscillator wave are misaligned. The second one is that the random phase delay of the returned wave. In this paper, we analyze systematically the principle and effect of heterodyne detection such as separation angle and spot size. Then a useful conclusion is presented to state the exist problem about match between signal wave and local-oscillator field.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Xiaoyan Zhao, Xiaodong Zeng, Changqing Cao, Zhejun Feng, and Chao Fu "Research on inverse synthetic aperture ladar", Proc. SPIE 7382, International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging, 73821J (27 August 2009); https://doi.org/10.1117/12.836538
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