Irregular strip target imaging task strip decomposition method

A target imaging and long strip technology, which is applied in complex mathematical operations, optical device exploration, integrated navigators, etc. Rail life, the effect of reducing the number of attitude adjustments

Active Publication Date: 2020-08-18
BEIJING INST OF SPACECRAFT SYST ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the strip decomposition method for regional targets has been studied, but there is no relevant information about the strip decomposition of irregular long strip targets

Method used

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  • Irregular strip target imaging task strip decomposition method
  • Irregular strip target imaging task strip decomposition method
  • Irregular strip target imaging task strip decomposition method

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Experimental program
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Embodiment

[0047] A strip decomposition method for an irregular long strip target imaging task, comprising the following steps:

[0048] (1) According to the average equatorial radius of the earth, the semi-major axis of the satellite orbit, and the field of view of the camera, calculate the sub-satellite point photography width;

[0049] (2) Starting from the first point of the irregular long strip target, two non-adjacent points Pi and Pj are used as the midpoint of the opposite side to form a rectangle, and the four vertices of the rectangle are solved;

[0050] (3) Determine whether all points between two non-adjacent points Pi and Pj fall within the rectangle, if all points fall within the rectangle, then continue to move the last point between the two non-adjacent points, that is, use Pi , Pj+1 is the middle point of the opposite side to form a rectangle, repeat the above steps; if one or more points between the two non-adjacent points Pi, Pj fall outside the rectangle, then the di...

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Abstract

Because an agile satellite can rapidly maneuver along a rolling axis, a pitching axis and a yawing axis, imaging of a strip target, such as an irregular strip target, in any direction of the earth surface can be realized. The irregular strip target is a long-line target composed of a series of continuous points, and the points are connected through straight lines. For an irregular strip target, inorder to reduce the attitude adjustment frequency among satellite imaging tasks, the irregular strip target can be divided into a plurality of rectangular strips for observation by utilizing the characteristic that a camera has a certain imaging breadth. Based on the technical scheme, the invention provides the strip decomposition method for the imaging task of the irregular strip target. Throughverification, the irregular strip decomposition method provided by the invention is feasible, and can effectively reduce the attitude adjustment frequency among satellite imaging tasks.

Description

technical field [0001] The invention relates to a strip decomposition method for an irregular long strip target imaging task, belonging to the field of agile satellite imaging task planning. Background technique [0002] Agile satellites refer to satellites that can achieve rapid maneuvering at large angles in a short period of time. Using their rapid attitude maneuvering capabilities, they can quickly change the pointing of the camera on the star to achieve efficient and flexible observation of ground targets. Agile is the most vivid image of it. expression. In view of the flexibility and efficiency of imaging, agile satellites have become an important development direction of remote sensing satellites. Many countries in the world have successfully launched or are researching agile satellites. Typical ones include the Ikonos series and Worldview series in the United States, and the Pleiades series in France, etc., and relevant research work has been carried out in China. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/11G06F17/16G01V8/10G01C21/24
CPCG06F17/11G06F17/16G01V8/10G01C21/24
Inventor 张和芬于龙江张健蔡娅雯张驰邢健
Owner BEIJING INST OF SPACECRAFT SYST ENG
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