A maritime environment presents a complex problem for propagating a laser through its turbulent nature. The environment includes standard aerosols, sea surface spray, and atmospheric turbulence when propagating along horizontal, vertical, or slant angled paths. Atmospheric measurements of the turbulence structure (Cn 2) and Fried’s coherence length (r0) were taken in a maritime environment using an IR Laser beacon at 1.06 microns mounted on an unmanned aerial system (UAS) at varying distances and slant angles using a Differential Image Motion Monitor (DIMM) and Wide-Angle Teleradiometric Transmissometer (WATT). The DIMM measured the coherence length, r0 and atmospheric turbulence strength, Cn 2 from the IR Laser beacon source as it propagated through the atmosphere. The WATT measured the transmissivity of the IR Laser beacon through the atmosphere.


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    Title :

    Atmospheric measurements from an airborne IR beacon in a maritime environment via DIMM and WATT


    Contributors:

    Conference:

    Ocean Sensing and Monitoring XII ; 2020 ; Online Only,California,United States


    Published in:

    Proc. SPIE ; 11420


    Publication date :

    2020-04-22





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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