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Proceedings Paper

Interaction of exposure time and system noise with angle-of-arrival measurements
Author(s): Frank D. Eaton; William A. Peterson; John R. Hines; Arthur Howard Waldie; James J. Drexler; John A. Qualtrough; David B. Soules
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Paper Abstract

The interaction of exposure time and system noise with angle-of-arrival measurements taken with the Atmospheric Turbulence Measurement and Observation System (ATMOS) is presented. Of particular interest is the effect at short exposure times when viewing stellar images. Both measurements and simulated results at various exposure times are shown. An analysis is discussed of the effect on the variance of angle-of-arrival data for short exposures when the frame rate produces 'dead' time between samples. The dependency of the exposure time/system noise interaction on deriving accurate transverse coherence length (ro) and power spectral densities (PSD) of angle-of-arrival from centroid measurements using the ATMOS is presented.

Paper Details

Date Published: 1 July 1991
PDF: 7 pages
Proc. SPIE 1487, Propagation Engineering: Fourth in a Series, (1 July 1991); doi: 10.1117/12.46552
Show Author Affiliations
Frank D. Eaton, U.S. Army Atmospheric Sciences Lab. (United States)
William A. Peterson, U.S. Army Atmospheric Sciences Lab. (United States)
John R. Hines, U.S. Army Atmospheric Sciences Lab. (United States)
Arthur Howard Waldie, Lockheed Engineering & Sciences Co. (United States)
James J. Drexler, Lockheed Engineering & Sciences Co. (United States)
John A. Qualtrough, Lockheed Engineering & Sciences Co. (United States)
David B. Soules, Lockheed Engineering & Sciences Co. (United States)


Published in SPIE Proceedings Vol. 1487:
Propagation Engineering: Fourth in a Series
Luc R. Bissonnette; Walter B. Miller, Editor(s)

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