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Inferring path average Cn2 values in the marine environment.

Frida Strömqvist Vetelino¹, Katelyn Grayshan, Cynthia Y Young

¹Department of Mathematics, University of Central Florida, Orlando, Florida 32816-1364, USA.

Journal of the Optical Society of America. A, Optics, Image Science, and Vision

|October 4, 2007

Summary

This summary is machine-generated.

New theory for laser scintillation in maritime environments improves atmospheric propagation models. Marine refractive index spectra yield lower turbulence parameters than terrestrial models, especially in moderate-to-strong fluctuations.

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Area of Science:

Atmospheric optics
Laser propagation
Optical turbulence

Background:

Current scintillation theory is primarily for terrestrial environments.
Maritime atmospheric conditions present unique challenges for laser propagation.
Accurate modeling of optical turbulence is crucial for reliable laser systems.

Purpose of the Study:

To develop new scintillation expressions for maritime environments.
To investigate the validity of terrestrial models in marine settings.
To compare turbulence parameters inferred from different refractive index spectra.

Main Methods:

Developed new marine atmospheric spectrum for spherical wave propagation.
Inferred path-averaged structure parameter C(n)(2) using scintillation measurements.
Compared C(n)(2) values derived from marine and terrestrial spectra.
Measured angle-of-arrival fluctuations to infer C(n)(2).

Main Results:

Marine scintillation expressions were developed for all turbulence regimes.
Inferred marine C(n)(2) values were ~20% lower than terrestrial in moderate-to-strong turbulence.
Minimal difference in C(n)(2) was observed in weak turbulence.
Angle-of-arrival measurements yielded C(n)(2) values an order of magnitude higher than scintillation methods.

Conclusions:

New marine atmospheric spectrum improves laser scintillation modeling in maritime environments.
Terrestrial models may overestimate turbulence in marine settings.
Angle-of-arrival fluctuations provide a distinct and potentially more sensitive measure of turbulence.