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Satellite in-orbit autonomous stereo imaging attitude planning method

A three-dimensional imaging and imaging technology, which is applied in the directions of space navigation vehicle guidance devices, space navigation equipment, space navigation vehicles, etc., can solve the problems of inapplicability of difficulty and increased planning of three-dimensional imaging tasks, so as to ensure accuracy and improve attitude determination. Accuracy, the effect of improving imaging capabilities

Active Publication Date: 2022-01-04
CHANGGUANG SATELLITE TECH CO LTD
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Problems solved by technology

[0005] The present invention provides a method for satellite on-orbit autonomous stereoscopic imaging attitude planning in order to solve the problems of increased difficulty in the planning of existing stereoscopic imaging tasks and inapplicability to on-orbit real-time planning.

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  • Satellite in-orbit autonomous stereo imaging attitude planning method
  • Satellite in-orbit autonomous stereo imaging attitude planning method
  • Satellite in-orbit autonomous stereo imaging attitude planning method

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specific Embodiment approach 2

[0115] Specific embodiment two, combine Figure 9 to Figure 13 Describe this implementation mode, this implementation mode is the embodiment of a kind of satellite on-orbit autonomous stereo imaging attitude planning method described in specific implementation mode one:

[0116] Imaging time window and expected quaternion verification;

[0117] A sun-synchronous orbit satellite with an orbital height of 535km and a descending node local time of 11:00 is used for simulation verification. Considering that the satellite has a width of 40km and an image overlap rate of >10% during mosaic imaging, the mosaic image is obtained. The longitude and latitude information of the imaging point is used to simulate the dual-view stereo and stitching imaging with the imaging point at the longitude and latitude [121.368°; 31.1094°] of Shanghai, and the three-view stereo and stitching imaging with the imaging point at the longitude and latitude of Beijing [116.388°; 39.9289°] ,Such as Figure...

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Abstract

The invention discloses a satellite in-orbit autonomous three-dimensional imaging attitude planning method, relates to the technical field of spacecraft attitude determination control, and solves the problems that the planning of an existing three-dimensional imaging task increases difficulty and is not suitable for in-orbit real-time planning and the like. The method is realized through three steps of satellite imaging attitude solving, imaging time window determination and imaging duration determination. After the satellite in-orbit autonomous three-dimensional imaging attitude planning is carried out, the ellipsoid earth model is adopted, and the three-dimensional imaging planning method considering the autorotation of the earth and the satellite rolling direction image is adopted, so the attitude determination precision of three-dimensional imaging is improved, and the imaging duration is obtained. Therefore, the imaging capability of the low-orbit remote sensing satellite is improved, and the accuracy of image data acquired in orbit is ensured.

Description

technical field [0001] The invention relates to the technical field of spacecraft attitude determination control, in particular to a satellite in-orbit autonomous stereoscopic imaging attitude planning method. Background technique [0002] Stereo imaging is a kind of satellite data acquisition mode. It uses the rapid attitude maneuver of the satellite pitch axis to realize multiple observations of the same ground target at different angles on the same track. Continuous long-strip imaging is performed, but the economic cost is high and the development is difficult, and the corresponding satellite is large in size. The agile satellite has only one camera, which is small in size and light in weight. It realizes stereoscopic imaging in the same orbit and stereoscopic imaging in different orbits through fast maneuvering and fast and stable control of the entire star attitude. Compared with off-track stereo imaging, the same-track stereo imaging shortens the acquisition time inte...

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Application Information

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IPC IPC(8): B64G1/24B64G1/22
CPCB64G1/244B64G1/22Y02A90/10
Inventor 刘萌萌李峰钟兴戴路徐开范林东张洁孙冰孟祥强
Owner CHANGGUANG SATELLITE TECH CO LTD
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