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Proceedings Paper

Heterodyne laser radar array receivers for the mitigation of target-induced speckle
Author(s): Philip Gatt; Wilson P. Perez; Dean Anthony Heimmermann; C. Martin Stickley
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Paper Abstract

We investigated a space diversity optical heterodyne array receiver for optimal coherent detection of finite transverse coherence length fields. In such an array receiver, each of the independent IF signals are appropriately phase-shifted and summed to generate a single IF signal with improved statistical qualities. In this paper we show that the advantages offered by a coherent array are both an increased average carrier-to-noise ratio and a reduction in carrier fading. We also show that the equal gain diversity reception technique performs almost as well as the maximal ratio technique with significantly less hardware complexity. Finally, we present the experimental results from a two element, one micron, laboratory breadboard ladar system.

Paper Details

Date Published: 15 October 1993
PDF: 8 pages
Proc. SPIE 1936, Applied Laser Radar Technology, (15 October 1993); doi: 10.1117/12.157101
Show Author Affiliations
Philip Gatt, CREOL/Univ. of Central Florida (United States)
Wilson P. Perez, CREOL/Univ. of Central Florida (United States)
Dean Anthony Heimmermann, CREOL/Univ. of Central Florida (United States)
C. Martin Stickley, CREOL/Univ. of Central Florida (United States)


Published in SPIE Proceedings Vol. 1936:
Applied Laser Radar Technology
Gary W. Kamerman; William E. Keicher, Editor(s)

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