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Multispectral laser radar development and target characterization
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Paper Abstract

We investigate the phenomenology and modeling for the development of an active multispectral laser radar (LADAR) sensor to image and identify ground targets in the 1 to 5 micrometers wavelength region. This sensor will be especially useful in high clutter situations or situations where the target is partially concealed. A continuously tunable optical parametric oscillator using a periodically poled lithium niobate (PPLN) nonlinear optical crystal is investigated as a candidate light source for the sensor. A 1 micrometers Nd:YAG laser was frequency shifted in PPLN to produce continuously tunable output between 1.35 to 5 micrometers wavelengths and signal output energy of up to 3.3 mJ in a 3 ns pulse. A tunable monostatic reflectometer system is fabricate for the measurement of the bidirectional reflectance distribution function of the LADAR target materials A method or band selection is formulated and tested using library reflectance spectra. Results of this work will be used for tower based imaging of different targets in cluttered backgrounds at ranges out to 3 km.

Paper Details

Date Published: 6 August 1997
PDF: 12 pages
Proc. SPIE 3065, Laser Radar Technology and Applications II, (6 August 1997); doi: 10.1117/12.281017
Show Author Affiliations
Mohan Vaidyanathan, Air Force Research Lab. (United States)
Timothy P. Grayson, Air Force Research Lab. and Science Applications International Corp. (United States)
Russell C. Hardie, Univ. of Dayton (United States)
Lawrence E. Myers, Air Force Research Lab. and Lightwave Electronics Corp. (United States)
Paul F. McManamon, Air Force Research Lab. (United States)

Published in SPIE Proceedings Vol. 3065:
Laser Radar Technology and Applications II
Gary W. Kamerman, Editor(s)

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