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Proceedings Paper

Short pulselength direct-detect laser reflective tomography imaging ladar: field results
Author(s): Jianfeng Sun; Xiaofeng Jin; Yu Zhou; Liren Liu
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Paper Abstract

Range-resolved reflective tomography using short pulselength lasers has been shown to be an image reconstruction method which can be used to recover image information about an object with a non-imaging laser radar (ladar) system. The resulting time-dependent return signal (Project) is collected by a non-imaging optical system, which provides a onedimensional signal as a function of range. The resulting time-dependent return signal is collected by a non-imaging optical system, which provides a one-dimensional signal as a function of range. This one-dimensional signal is related to a one-dimensional slice of the spatial 3-D Fourier transform of the object. Consequently, the resolution of the object remains constant, regardless of the object's distance from the optical system. This paper presents the field results of a short pulselength direct-detect laser reflective tomography imaging ladar, and gives the image reconstruction results. The intervals of the projections are different because of the variable speed of the imaging object. In order to efficiently improve and modify the image reconstruction quality in the field experiments, we develop a new imaging reconstruction algorithm based on the feature point in the projection data to overcome the nonuniform intervals between adjacent projections. The experiment results show our algorithm is feasible and efficient.

Paper Details

Date Published: 18 August 2010
PDF: 9 pages
Proc. SPIE 7780, Detectors and Imaging Devices: Infrared, Focal Plane, Single Photon, 778017 (18 August 2010); doi: 10.1117/12.860010
Show Author Affiliations
Jianfeng Sun, Shanghai Institute of Optics and Fine Mechanics (China)
Xiaofeng Jin, Shanghai Institute of Optics and Fine Mechanics (China)
Yu Zhou, Shanghai Institute of Optics and Fine Mechanics (China)
Liren Liu, Shanghai Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 7780:
Detectors and Imaging Devices: Infrared, Focal Plane, Single Photon
Eustace L. Dereniak; John P. Hartke; Paul D. LeVan; Randolph E. Longshore; Ashok K. Sood; Manijeh Razeghi, Editor(s)

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