Method for determining and compensating full-field drift angle of space-based camera

Abstract

The invention discloses a method for determining and compensating a full-field drift angle of a space-based camera. The method comprises the following steps: (1) performing scene simulation and modeling, comprising performing high-precision modeling and simulation on the satellite orbit, attitude, camera measurement coordinate system, satellite body measurement coordinate system and different field sensors of the camera; (2) calculating the full-field drift angle of the camera under a geocentre terrestrial reference frame; (3) calculating a compensation angle of the satellite body measurement coordinate system; (4) calculating a compensation attitude quaternion matrix on the satellite drift angle; and (5) calculating the full-field drift angle of the camera subjected to attitude compensation. According to the method disclosed by the invention, after a three-axis stability satellite rotates around three axes of the satellite body, the problem that the full-field drift angle of the camera cannot be determined and compensated during earth observation of the satellite in a specific attitude can be solved, and the method can be used for determining the drift angle of a satellite-borne large-field camera, designing and verifying the drift angle compensation method and optimizing the satellite design in the satellite development process.

Description

technical field [0001] The invention relates to a method for determining and compensating the full field of view drift angle of a spaceborne camera. The invention provides a method for determining and compensating the drift angle of the full field of view of a space-borne camera, especially a three-dimensional camera equipped with a very wide and wide field of view composed of a single projection center or multiple single projection centers. Axis-stabilized satellites, after the satellite maneuvers around the three-axis of the satellite body, when the satellite observes the earth with a specific attitude, the method of determining and compensating the drift angle of the full field of view of the camera. Background technique [0002] The definition of drift angle in aerospace photogrammetry is derived from aviation terms. In aviation, the definition of drift angle is that when there is a crosswind, the actual track of the aircraft is inconsistent with the course of the aircra...

AI Technical Summary

Problems solved by technology

[0006] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, to provide a method for determining and compensating the drift angle of the full field of view of the space-borne camera, and to solve the problem that the satellite with a specific Determination and Compensation of Camera Full Field of View Drift Angle in Earth Observation with Attitude

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