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Proceedings Paper

Long range 3D active imagery with a scanned single element 1.5 μm coherent lidar system
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Paper Abstract

Recent progress on the development of a long-range, high-resolution 3D active imaging sensor is described. Diffraction limited angular resolution of 20μrad and sub-metre down range resolution are demonstrated at stand-off ranges of 8km. A scanned single pixel arrangement was employed using an all-fiber coherent lidar operating in a chirp-pulse-compression mode. The monostatic antenna had an aperture of 150mm and the image was built up using a piezoelectric tip/tilt stage positioned prior to the final expansion of the beam. Transmit/receive multiplexing was achieved with a fiber optic circulator. Examples of recently acquired images consisting of 150x150 pixels with 1000, 30cm range cells per pixel at a stand-off range 8km are presented.

Paper Details

Date Published: 21 October 2005
PDF: 6 pages
Proc. SPIE 5988, Electro-Optical Remote Sensing, 59880M (21 October 2005); doi: 10.1117/12.632788
Show Author Affiliations
Guy N. Pearson, QinetiQ Ltd. (United Kingdom)
Kevin D. Ridley, QinetiQ Ltd. (United Kingdom)
David V. Willetts, QinetiQ Ltd. (United Kingdom)


Published in SPIE Proceedings Vol. 5988:
Electro-Optical Remote Sensing
Gary W. Kamerman; David V. Willetts, Editor(s)

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