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Method for carrying out inclined stripe imaging on targets in agile satellite maneuvering

A technology of oblique strips and satellites, applied in the field of aerospace remote sensing, to achieve the effects of simplified mission planning, high efficiency, and improved imaging performance

Active Publication Date: 2014-12-17
AEROSPACE DONGFANGHONG SATELLITE
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  • Application Information

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Problems solved by technology

In China, mobile imaging is still in the stage of theoretical exploration, and there are still many key technologies to be solved

Method used

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  • Method for carrying out inclined stripe imaging on targets in agile satellite maneuvering
  • Method for carrying out inclined stripe imaging on targets in agile satellite maneuvering
  • Method for carrying out inclined stripe imaging on targets in agile satellite maneuvering

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Embodiment Construction

[0025] The strip area forming a certain angle with the track of the sub-satellite point is called "oblique strip". At present, there is no relevant discussion on "slant strips". However, if you want to observe a long and narrow target area and use "slant strips" to cover the target area, its geometric definition and coverage judgment method must be given. On this basis, it is necessary to give the attitude calculation method of the satellite optical axis pointing to the target strip in real time to realize the imaging.

[0026] like figure 1 As shown, it is a flow chart of the method of the present invention. From a large perspective, the method of the present invention mainly includes two components: the model establishment of the ground target strip and the imaging of the target oblique strip.

[0027] To complete the imaging deviated from the sub-satellite point, it is first necessary to model the target area that deviates from the track of the sub-satellite point, and the...

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Abstract

The invention provides a method for carrying out inclined stripe imaging on targets in agile satellite maneuvering. The method overcomes the defect that an imaging track in a traditional imaging mode has to be parallel to a sub-satellite point track. An imaging mode of a target region adopting inclined stripe coverage and sub-satellite point track forming a certain angle is provided, a judging principle that any one target point on the earth is covered by an inclined stripe is built, and a method for imaging the target inclined stripe is provided on the basis, so that the imaging of a satellite on a narrow region forming a certain included angle with the sub-satellite point track is realized. The method provided by the invention has the advantages that the problems of modeling on the inclined stripe imaging region in the satellite maneuvering process imaging and the imaging on the inclined stripe target are solved, so that the satellite imaging region is more flexible, and the imaging efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of aerospace remote sensing, and relates to a method for imaging a target oblique strip by a satellite. Background technique [0002] At present, most optical remote sensing satellites use the traditional imaging mode to image the target, that is, during push-broom imaging, the attitude of the satellite remains stable, so that the spatial orientation of the image plane is fixed to the ground, and push-broom imaging completely depends on the orbital velocity of the satellite. Therefore, the ground push-broom trajectory of each scene must be parallel to the sub-satellite point trajectory. However, for some special imaging tasks, such as the imaging of targets in narrow areas such as highways, coastlines, and borders, the target area is not parallel to the sub-satellite point trajectory. If the traditional imaging method is used, its coverage area is limited by the satellite orbit The strict constraints of mul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 黄敏杨芳葛玉君黄群东
Owner AEROSPACE DONGFANGHONG SATELLITE
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