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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Editor: Stephen A. Burns
  • Vol. 26, Iss. 10 — Oct. 1, 2009
  • pp: 2128–2133

Sensing and communication trade-offs in picosatellite formation flying missions

Shlomi Arnon and Debbie Kedar  »View Author Affiliations

JOSA A, Vol. 26, Issue 10, pp. 2128-2133 (2009)

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One of the primary challenges in all small satellite design is the attainment of adequate sensing and communication capabilities within the stringent spatial limitations. These can be defined in terms of surface area expenditure for the different payloads. There is an inevitable trade-off between enhancing the sensing capacity at the expense of reducing communication capabilities on the one hand and, on the other hand, increasing the communication capacity to the detriment of the sensing ability. Careful balancing of the conflicting demands is necessary to achieve acceptable performance levels. In this paper we study two intersatellite optical wireless communication scenarios: (i) a direct link between two satellites and (ii) a folded path link between a master satellite and a picosatellite equipped with a modulatable retroreflector. In the latter case the picosatellite does not have a laser transmitter and the data carrier is the retroreflected beam from the master satellite. The data rate, which is bounded by the sensing payload resolution, is derived using diffraction theory and Shannon capacity considerations. We develop a mathematical model to describe the interrelations between sensing and communication facilities in a picosatellite flight formation using optical technologies and demonstrate system performance trade-offs with a numerical example.

© 2009 Optical Society of America

OCIS Codes
(060.2605) Fiber optics and optical communications : Free-space optical communication
(110.3055) Imaging systems : Information theoretical analysis

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: May 14, 2009
Revised Manuscript: August 4, 2009
Manuscript Accepted: August 10, 2009
Published: September 3, 2009

Shlomi Arnon and Debbie Kedar, "Sensing and communication trade-offs in picosatellite formation flying missions," J. Opt. Soc. Am. A 26, 2128-2133 (2009)

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