Title

Carrier-to-noise ratio for an equal gain coherent laser radar receiver array system: Theory and experiment

Keywords

Atmospheric optics; Carrier-to-noise ratio; Coherent receiver; Laser radar

Abstract

In this paper, a theoretical comparison is made of the mean carrier-to-noise ratio (CNR) for a coherent (heterodyne detection) equal gain (EG) optical array receiver system with that predicted by a conventional single-aperture monolithic coherent detector system. Our analysis shows that the mean CNR for an EG array receiver system improves significantly over that of a single aperture system. Experimental data taken from a recent outdoor experiment over a range up to 1 km between target and transceiver are also presented and compared with the theory for a particular eight-element EG system developed at the University of Central Florida. Optical signals received by the EG receiver array are launched into eight single mode optical fibers. Phase compensation between the individual receivers is accomplished by wrapping the fibers around PZT cylinders that are controlled by phase compensating electronics.

Publication Date

12-1-1998

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

3219

Number of Pages

84-92

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.298052

Socpus ID

57649165877 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/57649165877

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