For most imaging sensors, a constant (dc) pointing error is unimportant (unless large), but time-dependent (ac) errors degrade performance by either distorting or smearing the image. When properly quantified, the separation of the root-mean-square effects of random line-of-sight motions into dc and ac components can be used to obtain the minimum necessary line-of-sight stability specifications. The relation between stability requirements and sensor resolution is discussed, with a view to improving communication between the data analyst and the control systems engineer.


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    Title :

    New definitions of pointing stability - ac and dc effects


    Contributors:


    Publication date :

    1992-12-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




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