A case study is presented to test the ability of the computer code SHIPSIG (developed by the Naval Surface Warfare Center) to predict the zero-range average temperature for a Frigate-class ship during different meteorological conditions. The course of a guided missile frigate operating off the coast of San Diego, California, was chosen for this investigation. During a 5-hour period, changes in the ship's heading allowed solar heating of different sides of the ship. Using meteorological parameters measured on shore, the calculated ship's temperature response was found to respond favorably to the changes in solar heating. As the ship returned to harbor, its average temperature was measured as it passed close to a calibrated thermal imaging system. The predicted and measured (adjusted for atmospheric effects) average temperatures agreed within less than 2 degrees C depending upon the surface emissivity of the ship. The sensitivities of the modeled temperatures to uncertainties in the meteorological input parameters are also discussed. (rh)


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    Title :

    Infrared Ship Signature Evaluation


    Contributors:

    Publication date :

    1989


    Size :

    20 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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