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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 46, Iss. 25 — Sep. 1, 2007
  • pp: 6442–6448

Channel modeling of light signals propagating through a battlefield environment: analysis of channel spatial, angular, and temporal dispersion

Binbin Wu, Brian Marchant, and Mohsen Kavehrad  »View Author Affiliations


Applied Optics, Vol. 46, Issue 25, pp. 6442-6448 (2007)
http://dx.doi.org/10.1364/AO.46.006442


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Abstract

Free-space optical communication (FSOC) is used to transmit a modulated beam of light through the atmosphere for broadband applications. Fundamental limitations of FSOC arise from the environment through which light propagates. We address transmitted light signal dispersion (spatial, angular, and temporal dispersion) in FSOC that operates in the battlefield environment. Light signals (photons) transmitted through the battlefield environment will interact with particles of man-made smoke such as fog oil, along the propagation path. Photon–particle interaction causes dispersion of light signals, which has significant effects on signal attenuation and pulse spread. We show that physical properties of battlefield particles play important roles in determining dispersion of received light signals. The correlation between spatial and angular dispersion is investigated as well, which has significant effects on receiver design issues. Moreover, our research indicates that temporal dispersion (delay spread) and the received power strongly depend on the receiver aperture size, field of view (FOV), and the position of the receiver relative to the optical axis of the transmitter. The results describe only specific scenarios for given types of battlefield particles. Generalization of the results requires additional work. Based on properties of the correlation, a sensitive receiver with a small FOV is needed that can find the line-of-sight photons and work with them.

© 2007 Optical Society of America

OCIS Codes
(060.4510) Fiber optics and optical communications : Optical communications
(290.1090) Scattering : Aerosol and cloud effects
(290.4210) Scattering : Multiple scattering

ToC Category:
Scattering

History
Original Manuscript: June 1, 2007
Manuscript Accepted: July 7, 2007
Published: August 30, 2007

Citation
Binbin Wu, Brian Marchant, and Mohsen Kavehrad, "Channel modeling of light signals propagating through a battlefield environment: analysis of channel spatial, angular, and temporal dispersion," Appl. Opt. 46, 6442-6448 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-25-6442


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References

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