10 October 2017 The laboratory demonstration and signal processing of the inverse synthetic aperture imaging ladar
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Abstract
This paper presents a coherent inverse synthetic-aperture imaging ladar(ISAL)system to obtain high resolution images. A balanced coherent optics system in laboratory is built with binary phase coded modulation transmit waveform which is different from conventional chirp. A whole digital signal processing solution is proposed including both quality phase gradient autofocus(QPGA) algorithm and cubic phase function(CPF) algorithm. Some high-resolution well-focused ISAL images of retro-reflecting targets are shown to validate the concepts. It is shown that high resolution images can be achieved and the influences from vibrations of platform involving targets and radar can be automatically compensated by the distinctive laboratory system and digital signal process.
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Si Gao, ZengHui Zhang, XianWen Xu, WenXian Yu, "The laboratory demonstration and signal processing of the inverse synthetic aperture imaging ladar", Proc. SPIE 10427, Image and Signal Processing for Remote Sensing XXIII, 104271I (10 October 2017); doi: 10.1117/12.2278055; https://doi.org/10.1117/12.2278055
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