Title

Fade statistics associated with a space/ground coherent receiver array

Keywords

Atmospheric optics; Coherent array receiver; Laser communication

Abstract

Laser-satellite communication systems are subject to signal fading below a prescribed threshold value owing primarily to optical scintillations associated with the received signal, regardless of pointing errors. The probability of fade associated with a downlink laser-satellite communication system is calculated here as a function of threshold intensity below the mean intensity of a Gaussian-beam wave incident on a coherent (heterodyne detection) equal-gain (EG) receiver array. Previous theoretical studies and experimental data reveal that the mean carrier-to-noise ratio (CNR) for an EG array receiver system improves greatly over that of a conventional single aperture monolithic coherent detection system. The present theoretical analysis illustrates there is also a significant decrease in the fractional fade time for an EG optical array receiver system with two or more receivers spatially separated by more than the intensity correlation length of the received optical signal.

Publication Date

12-1-1998

Publication Title

Proceedings of SPIE - The International Society for Optical Engineering

Volume

3433

Number of Pages

379-387

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1117/12.330239

Socpus ID

0032224524 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0032224524

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