星载紫外临边探测仪切点几何定位与切高订正

Key Points

• The aim is to accurately assess and correct the pointing and height deviation of the OMS-L instrument in orbit.
• Developed a scanning mirror observation geometry model based on the instrument's precise coordinate system.
• Constructed a virtual ellipsoid height calculation model for ground observation.
• Evaluated OMS-L's height system deviations using the knee point method.
• Corrected installation pitch parameters during a 12-month testing period.
• Height correction accuracy improved to better than 0.4 km.
• Vertical pointing seasonal variation was less than 0.01°.
• Cross-track pointing deviation measured at 0.1° using image matching.