Correlation between intensity fluctuations in the mid- and long-IR bands for near sea transmission paths

Charles S. Bendall; T. Bull; D. D. Wallin; J. T. Caulfield

doi:10.1117/12.280364

13 August 1997 Correlation between intensity fluctuations in the mid- and long-IR bands for near-sea transmission paths

Charles S. Bendall, T. Bull, D. D. Wallin, J. T. Caulfield

Proceedings Volume 3061, Infrared Technology and Applications XXIII; (1997) https://doi.org/10.1117/12.280364
Event: AeroSense '97, 1997, Orlando, FL, United States

Abstract

This paper describes the results of an experiment to measure the correlation between the atmospheric turbulence induced intensity fluctuations in the mid and long IR bands for transmission paths appropriate to the IRS&T. A DF laser operating at 3.8 microns and a carbon-dioxide laser operating at 9.24 microns served as the mid and long IR sources. The experiments were conducted on a 16 km transmission path over the Chesapeake Bay. Data was obtained under a variety of turbulence strengths including the transition between weak and strong turbulence. The experimental correlations values were compared to the predictions of a weak turbulence model. Dispersion between the indices of refraction at 3.8 microns and 9.24 microns appears to be responsible for significant disagreement between the measured and predicted results. Possible applications of the correlation for the IRS&T are briefly discussed.

Citation Download Citation

Charles S. Bendall, T. Bull, D. D. Wallin, and J. T. Caulfield "Correlation between intensity fluctuations in the mid- and long-IR bands for near-sea transmission paths", Proc. SPIE 3061, Infrared Technology and Applications XXIII, (13 August 1997); https://doi.org/10.1117/12.280364

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available