5 August 2015 Spatial difference shaping to improve range resolution in 3D super resolution range gated imaging
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Abstract
Three-dimensional super-resolution range-gated imaging has been developed for high-resolution 3D remote sensing with two range-intensity correlation algorithms under specific shapes of range-intensity profiles (RIP). However, pulsed lasers have a minimum pulse width which limits range resolution improvement. Here a spatial difference shaping method is proposed to break the resolution limitation. This method establishes a shaping filter, and the pre-reshaping gate images are reshaped by spatial difference and yield new gate images with the laser pulse width equivalently narrowed as half value which improves the range resolution. Furthermore, the boundary blurring caused by non-rectangular laser pulses are also eliminated.
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Xinwei Wang, Xinwei Wang, Yinan Cao, Yinan Cao, Dezhen Lu, Dezhen Lu, Xiaoquan Liu, Xiaoquan Liu, Songtao Fan, Songtao Fan, Yan Zhou, Yan Zhou, Youfu Li, Youfu Li, } "Spatial difference shaping to improve range resolution in 3D super resolution range gated imaging", Proc. SPIE 9622, 2015 International Conference on Optical Instruments and Technology: Optoelectronic Imaging and Processing Technology, 962202 (5 August 2015); doi: 10.1117/12.2184677; https://doi.org/10.1117/12.2184677
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