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.
New definitions of pointing stability - ac and dc effects
1992-12-01
Miscellaneous
No indication
English
Pointing Error Definitions, Metrics, and Algorithms (AAS 03-559)
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