Attitude compensation method of agile satellite imagery in reverse push-broom mismatch
A satellite and reverse technology, applied in image analysis, image data processing, aerospace vehicle guidance devices, etc., can solve the problems of small imaging width of space-borne remote sensors, inability to cover regional targets, and single imaging task, and meet the requirements of High-resolution imaging requirements, improving task execution capabilities, and ensuring the effect of high-precision requirements
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[0030] Such as figure 1 Shown is the flowchart of the method of the present invention. The method of the present invention mainly includes two parts: calculating the drift angle in the reverse push-broom mode along the orbiting direction and the yaw control and compensation of the attitude.
[0031] The essence of the drift angle is the angle between the camera push-broom direction and the target speed direction. The calculation process of the drift angle is as follows:
[0032] (1) Determine the projection velocity of the camera push-broom velocity on the surface in the reverse push-broom imaging mode, the relative moving linear velocity of the target point caused by the earth's rotation linear velocity and orbital motion;
[0033] (2) Analyze the cause of the target point closing speed to obtain the target point closing speed;
[0034] (3) Deduce the longitudinal component of the target point-joint velocity in the camera push-broom direction and the transverse component pe...
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