A Technique for Estimating the Inner Scale and Strength of Turbulence along an Optical Propagation Path

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA9451-06-M-0136
Agency Tracking Number: F061-009-2005
Amount: $99,950.00
Phase: Phase I
Program: SBIR
Awards Year: 2006
Solicitation Year: 2006
Solicitation Topic Code: AF06-009
Solicitation Number: 2006.1
Small Business Information
1341 South Sunkist Street, Anaheim, CA, 92806
DUNS: 801256199
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Terry Brennan
 Senior Scientist
 (714) 772-7668
 tbrennan@tosc.com
Business Contact
 Glenn Tyler
Title: President
Phone: (714) 772-7668
Email: glenn.a.tyler@tosc.com
Research Institution
N/A
Abstract
The Kolmogorov spectrum for the refractive index is often assumed for analysis and simulation of optical propagation through turbulence. It is recognized that the Hill spectrum, including inner scale, is a more realistic model of index variations. This model includes a turbulence enhancement in a spectral subrange prior to the inner scale roll-off. Knowledge of this enhancement and the subsequent roll-off is important for predicting the statistics of both phase and scintillation effects. A technique for estimating the inner scale, L0, is proposed which can be implemented as part of a simple sensor system. The proposed inner scale sensor is also capable of estimating the Fried coherence length, r0, and the Greenwood frequency.

* Information listed above is at the time of submission. *

Agency Micro-sites

SBA logo
Department of Agriculture logo
Department of Commerce logo
Department of Defense logo
Department of Education logo
Department of Energy logo
Department of Health and Human Services logo
Department of Homeland Security logo
Department of Transportation logo
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government