Chinese Journal of Lasers, Volume. 41, Issue 9, 913004(2014)
Research of Geometric Calibration of the Earth Annular Ultraviolet Limb Imager
Considering the design feature and requirement in high precision of geometric calibration of the earth annular ultraviolet (UV) limb imager, a new method based on UV collimator, high precision theodolite and six-dimension rotator is proposed. Geometric calibration is done as soon as the new device is built-up. The result shows an agreement of 2 pixel or less with the theoretical design in limb altitude and a biggest deviation of 25 pixel in limb azimuth orientation. The combined standard uncertainty analysis indicates a 0.488 pixel and a 0.612 pixel uncertainty in limb altitude and azimuth orientation respectively, both reaching sub-pixel precision. With the successful accomplishment of the geometric calibration, the method and the device offer an important reference and a realized platform for the pre-optic-mechanical installing and measuring of the similar type of instrument.
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Yang Xiaohu, Wang Shurong, Huang Yu. Research of Geometric Calibration of the Earth Annular Ultraviolet Limb Imager[J]. Chinese Journal of Lasers, 2014, 41(9): 913004
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Received: Apr. 18, 2014
Accepted: --
Published Online: Aug. 12, 2014
The Author Email: Xiaohu Yang (yangxiaohu861106@163.com)