Title

Heterodyne Laser Radar Array Receivers For The Mitigation Of Target-Induced Speckle

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.

Publication Date

10-15-1993

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

1936

Number of Pages

157-164

Document Type

Article; Proceedings Paper

Identifier

scopus

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.157101

Socpus ID

85076256105 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85076256105

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