Attitude adjusting method in imaging along oblique strip

Abstract

The invention provides an attitude adjusting method in imaging of an oblique strip. The attitude adjusting method has high practicability in high-resolution imaging tasks for imaging sub-satellite point tracks such as roads, coast lines, border lines which are not parallel along an oblique strip. The invention aims at a problem of no dynamic attitude adjusting method in imaging along the oblique strip, and provides the attitude adjusting method in which the sliding speed of a photographing point along a preset oblique strip is set and then imaging is performed through dynamically tracking the sliding of the photographing point through the satellite attitude and finally drift angle compensation is performed, thereby realizing imaging along a preset target oblique strip. The attitude adjusting method of the invention can satisfy a requirement of satisfying different imaging tasks through changing the sliding speed of the photographing point along the oblique strip, such as quick push-broom imaging which can realize an emergency imaging task and slow push-broom imaging with prolonged exposure time for improving an imaging quality.

Description

technical field [0001] The invention relates to the technical field of spacecraft attitude adjustment, in particular to an attitude adjustment method for imaging along a slant strip, which is used for realizing the attitude maneuver adjustment of a camera carrier during imaging along a given slant strip. Background technique [0002] In traditional static imaging, since the push-broom ground speed is mainly caused by orbital motion, its imaging trajectory is considered to be a parallel subplanetary point trajectory, and a section of trajectory is called a strip, and the splicing and imaging of rectangular areas can be realized by strip splicing. However, for high-resolution imaging tasks such as roads, coastlines, and borders that are moving toward uneven subplanetary trajectories, traditional static imaging requires multiple observations to obtain a complete image because the strip must be parallel to the subplanetary trajectory. It cannot meet the needs of real-time acquis...

AI Technical Summary

Problems solved by technology

The imaging mode in motion is described in detail by Huang Qundong in the 12th issue of "Optical Precision Engineering" in 2012, "Image Movement Velocity Calculation when Attitude to Ground Pointing is Changing Imaging". The imaging method during maneuvering cannot realize the attitude planning during the imaging process along the oblique strip, and the attitude adjustment method does not perform imaging bias angle compensation, so it is difficult to guarantee the imaging quality of imaging during maneuvering

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