Practical sensor arrays are characterized by certain physical parameters, related to the array shape and its electrical properties. Accurate direction finding requires calibration of these parameters to a relatively high accuracy. Depending on the application, calibration may be performed either off-line or on-line. Off-line calibration is performed by transmitting signals from known locations and measuring the array response. The array parameters can then be estimated by maximum likelihood, least-squares, or some other algorithm. This work relates the parameter estimation accuracy achieved in off-line calibration to the direction-of-arrival (DOA) errors during on-line operation. It then proposes a criterion for choosing the off-line calibration points (number and location) so as to meet on-line accuracy requirements.


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    Title :

    Accuracy requirements in off-line array calibration


    Contributors:
    Porat, B. (author) / Friedlander, B. (author)


    Publication date :

    1997-04-01


    Size :

    3174137 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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