Abstract

The use of spatial filters, or weighting functions, on transmitting and receiving apertures used on line-of-sight propagation paths is a powerful technique for probing the velocity and refractivity structure of the transmission medium. Provided that the weak-scattering approximation is appropriate, simple and inexpensive techniques offer on the order of 100 resolution elements along the path, with little or no data processing required. A simple optical experiment has been conducted over a 61 m path, with a resolution-cell size of about 0.7 m long, 0.1 m³ volume, with results that compare well with anemometer measurements.

© 1974 Optical Society of America

Remote probing of a distant turbulent layer using various spatial filtering methods

Valery U. Zavorotny
Appl. Opt. 31(36) 7660-7668 (1992)

Saturation of optical scintillation by strong turbulence*

S. F. Clifford, G. R. Ochs, and R. S. Lawrence
J. Opt. Soc. Am. 64(2) 148-154 (1974)

Aperture-averaging effects for weak scintillations*

Gerald E. Homstad, John W. Strohbehn, Roger H. Berger, and J. M. Heneghan
J. Opt. Soc. Am. 64(2) 162-165 (1974)

Wind and Refractive-Turbulence Sensing Using Crossed Laser Beams

Ting-i Wang, S. F. Clifford, and G. R. Ochs
Appl. Opt. 13(11) 2602-2608 (1974)

Localized measurements of refractive turbulence using spatial filtering of scintillations

James H. Churnside, Richard J. Lataitis, and Robert S. Lawrence
Appl. Opt. 27(11) 2199-2213 (1988)