A method for observing the condensation along the meridian of the earth
By employing a deceleration-based fixed-scan observation method along Earth's meridians and a high-stability algorithm, the problems of motion ambiguity and target identification difficulties in satellite observations along Earth's meridians were solved, achieving high-quality imaging and continuous optimization of observations, and meeting the high-stability requirements.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- INNOVATION ACAD FOR MICROSATELLITES OF CAS
- Filing Date
- 2026-03-11
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies struggle to effectively reduce satellite speed relative to the ground through attitude maneuvers, hindering high-quality imaging and continuous optimization of observations. This is particularly true during observations along Earth's meridians, where motion blur and target identification remain problematic.
The method of decelerating fixed-scan observation along the Earth's meridian is adopted. By uploading fixed-scan parameter configuration commands and combining them with a high-stability algorithm, the satellite's autonomous three-axis attitude angles and angular velocities are calculated. The process is divided into two stages: advance maneuver and fixed-scan observation. This ensures that the observation area is evenly divided in each attitude control cycle. High-precision double-precision floating-point storage and arcsine formula are used to calculate attitude angles and eliminate attitude angular velocity jitter.
It achieved highly stable satellite observations along the Earth's meridian, eliminated attitude and angular velocity jitter, met high stability requirements, improved imaging quality and target recognition capabilities, and adapted to diverse mission needs.
Smart Images
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