Abstract
In this paper, the error analysis model for the three-element Risley-prism scan system (TRSS) is established, and categories of error sources are redefined. The impact of each error on the pointing accuracy is graphically presented with analytical and numerical results. The analysis method can be implemented to any Risley-prism beam scan system. For thin prisms, an error compensation algorithm for the TRSS is developed to accomplish high-accuracy beam scanning, which can be referred to the error calibration of the TRSS.
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