15 October 2015 The measurement of pointing accuracy of two-dimensional scan mirror
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Proceedings Volume 9676, AOPC 2015: Optical Design and Manufacturing Technologies; 967609 (2015) https://doi.org/10.1117/12.2197684
Event: Applied Optics and Photonics China (AOPC2015), 2015, Beijing, China
Abstract
The observation accuracy of space camera targeted on ground objects is directly affected by the pointing deviation of the two dimensional scan mirror. A plane model of the scan mirror’s normal trajectory is established when scan mirror is rotating along the rolling axis while the pitching axis remains still. The pointing accuracy of scan mirror cross the track direction is measured with the plane model. A cone model of the scan mirror’s normal trajectory is established when scan mirror is rotating along the pitching axis while the rolling axis remains still. The pointing accuracy of scan mirror along the track direction is measured with the plane model. The nonorthogonality of shafting of the rolling axis and the pitching axis is measured with the two models. Data processing results are feedback to pointing controller to correct the input signal of resolver, until the pointing accuracy of scan mirror meets the requirement. The experimental results indicate that the models of measuring the pointing accuracy of scan mirror are accurate and the data processing algorithm is feasible. The testing precision reached 10-3 second.
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Hui Xing, Hui Xing, Chao An, Chao An, Junru Song, Junru Song, Xuhua He, Xuhua He, } "The measurement of pointing accuracy of two-dimensional scan mirror", Proc. SPIE 9676, AOPC 2015: Optical Design and Manufacturing Technologies, 967609 (15 October 2015); doi: 10.1117/12.2197684; https://doi.org/10.1117/12.2197684
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