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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Stephen A. Burns
  • Vol. 24, Iss. 11 — Nov. 1, 2007
  • pp: 3478–3492

Angle-of-arrival anemometry by means of a large-aperture Schmidt–Cassegrain telescope equipped with a CCD camera

Yonghun Cheon, Vincent Hohreiter, Mario Behn, and Andreas Muschinski  »View Author Affiliations


JOSA A, Vol. 24, Issue 11, pp. 3478-3492 (2007)
http://dx.doi.org/10.1364/JOSAA.24.003478


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Abstract

The frequency spectrum of angle-of-arrival (AOA) fluctuations of optical waves propagating through atmospheric turbulence carries information of wind speed transverse to the propagation path. We present the retrievals of the transverse wind speed, v b , from the AOA spectra measured with a Schmidt–Cassegrain telescope equipped with a CCD camera by estimating the “knee frequency,” the intersection of two power laws of the AOA spectrum. The rms difference between 30 s estimates of v b retrieved from the measured AOA spectra and 30 s averages of the transverse horizontal wind speed measured with an ultrasonic anemometer was 11 cm s 1 for a 1 h period, during which the transverse horizontal wind speed varied between 0 and 80 cm s 1 . Potential and limitations of angle-of-arrival anemometry are discussed

© 2007 Optical Society of America

OCIS Codes
(010.1300) Atmospheric and oceanic optics : Atmospheric propagation
(010.1330) Atmospheric and oceanic optics : Atmospheric turbulence
(010.7350) Atmospheric and oceanic optics : Wave-front sensing

ToC Category:
Atmospheric and Oceanic Optics

History
Original Manuscript: March 21, 2007
Revised Manuscript: July 10, 2007
Manuscript Accepted: August 10, 2007
Published: October 12, 2007

Citation
Yonghun Cheon, Vincent Hohreiter, Mario Behn, and Andreas Muschinski, "Angle-of-arrival anemometry by means of a large-aperture Schmidt-Cassegrain telescope equipped with a CCD camera," J. Opt. Soc. Am. A 24, 3478-3492 (2007)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-24-11-3478


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