Analytical expressions are given for the two main effects of ship motion on the detection performance of a sonar: attenuation and distortion of sonar echoes. Regarding attenuation for a ship with an unstabilized transducer, graphs are presented in which the minimum, maximum, and mean loss are plotted as a function of the amplitude of the ship movement. For the distortion, formulas were derived for the maximum frequency spread and optimum length of a tone pulse. On the basis of actual ship motion data, an estimate is made of the optimum pulse length for the worst case situation.


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    Title :

    Effect of Ship Motion on Sonar Detection Performance


    Contributors:

    Publication date :

    1976


    Size :

    28 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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