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Proceedings Paper

Range detection through the atmosphere using Laguerre-Gaussian beams
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Paper Abstract

For most radar or ladar systems range information is obtained from the time necessary for an electromagnetic pulse to propagate to a target and return to a receiving antenna. In contrast, we investigate a method that replaces temporal encoding of distance with spatial encoding. In particular, we use a self-referencing superposition of Laguerre-Gaussian beams to translate propagation distance into transverse rotation of cross-section of the beam intensity. We review the mathematical foundations of the technique and discuss models for simulating its performance in turbulent atmosphere. In addition, we present a simple technique to extract the rotation angle from a two-dimensional cross-section of the beam. Preliminary results indicate that the technique is robust with respect to propagation in a turbulent atmosphere.

Paper Details

Date Published: 7 September 2006
PDF: 12 pages
Proc. SPIE 6307, Unconventional Imaging II, 630704 (7 September 2006); doi: 10.1117/12.680856
Show Author Affiliations
Canh Ly, U.S. Army Research Lab. (United States)
Markus Testorf, Dartmouth College (United States)
Joseph Mait, U.S. Army Research Lab. (United States)


Published in SPIE Proceedings Vol. 6307:
Unconventional Imaging II
Victor L. Gamiz; Paul S. Idell; Marija S. Strojnik, Editor(s)

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