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Proceedings Paper

Spatial intensity correlation and aperture averaging measurements in a 20 mile retroreflected lasercom link
Author(s): Christopher I. Moore; Harris R. Burris; Michele R. Suite; Mena F. Stell; Michael J. Vilcheck; Mark A. Davis; Rita Mahon; William S. Rabinovich; G. Charmaine Gilbreath; Eun Oh; William J. Scharpf; Anne E. Reed
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Paper Abstract

The Naval Research Laboratory has established a lasercom test bed across the Chesapeake Bay. The test bed uses a bi-static transmitter/receiver arrangement on the western shore of the Chesapeake Bay and various configurations of 5 cm retro-reflectors on the eastern shore to produce a 32 km retro-reflected lasercom test range. Experiments measuring the laser’s transverse spatial profile after propagation over the test range have been performed. These experiments use an InGaAs CCD to image the pupil plane of the 40 cm receiver telescope and a frame grabber to store contiguous images for analysis. Analysis of these image sequences allows measurement of transverse spatial correlations across the received beam after 32 km retro-reflected propagation of the beam. Various configurations and numbers of retro-reflectors were studied to investigate the impact of number and arrangement of retro-reflectors on the received beam’s spatial profile and spatial correlations. Additionally, since the CCD output is stored as a contiguous stream of images, analysis of these images’ intensity variance in time allows measurement of aperture averaging effects as a function of number of retro-reflectors and their geometry. Results from these experiments are presented.

Paper Details

Date Published: 27 January 2004
PDF: 9 pages
Proc. SPIE 5160, Free-Space Laser Communication and Active Laser Illumination III, (27 January 2004); doi: 10.1117/12.507864
Show Author Affiliations
Christopher I. Moore, Naval Research Lab. (United States)
Harris R. Burris, Research Support Instruments, Inc. (United States)
Michele R. Suite, Naval Research Lab. (United States)
Mena F. Stell, Research Support Instruments, Inc. (United States)
Michael J. Vilcheck, Naval Research Lab. (United States)
Mark A. Davis, Honeywell Technology Solutions Inc. (United States)
Rita Mahon, Titan Corp. (United States)
William S. Rabinovich, Naval Research Lab. (United States)
G. Charmaine Gilbreath, Naval Research Lab. (United States)
Eun Oh, Naval Research Lab. (United States)
William J. Scharpf, Naval Research Lab. (United States)
Anne E. Reed, Naval Research Lab. (United States)


Published in SPIE Proceedings Vol. 5160:
Free-Space Laser Communication and Active Laser Illumination III
David G. Voelz; Jennifer C. Ricklin, Editor(s)

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