An imaging control system and method for an earth observation satellite
An imaging control and earth observation technology, applied in the aerospace field, can solve problems such as strong interference, ghosting, and inability to meet the high-precision imaging requirements of remote sensing satellites, and achieve the effect of improving system efficiency
Active Publication Date: 2020-11-03
INNOVATION ACAD FOR MICROSATELLITES OF CAS +1
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Problems solved by technology
[0003] Due to the low altitude of the orbit, atmospheric resistance has a significant impact on the orbit. Therefore, the existing low-orbit satellites usually use high-thrust orbit correction to achieve orbit maintenance. However, strong interference is easily introduced during high-thrust orbit control. If at this time When the satellite captures the specified target, it is difficult to obtain the image data of the specified target stably
At the same time, earth observation satellites currently use a fixed frame rate. Since the camera observation will be affected by the attitude movement of the satellite, the fixed camera frame rate can only meet the requirements of a stable attitude. The output image will have problems such as ghosting, which cannot meet the high-precision imaging requirements of remote sensing satellites
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[0029] In the following description, the present invention is described with reference to various examples. One skilled in the art will recognize, however, that the various embodiments may be practiced without one or more of the specific details, or with other alternative and / or additional methods, materials, or components. In other instances, well-known structures, materials, or operations are not shown or described in detail so as not to obscure the inventive concepts of the present invention. Similarly, for purposes of explanation, specific quantities, materials and configurations are set forth in order to provide a thorough understanding of embodiments of the invention. However, the invention is not limited to these specific details. Furthermore, it should be understood that the embodiments shown in the drawings are illustrative representations and are not necessarily drawn to correct scale.
[0030] In this specification, reference to "one embodiment" or "the embodiment...
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An imaging control system for an earth observation satellite, including a control center, an earth imaging camera, and an orbit maintenance subsystem, wherein the frame rate of the earth imaging camera is adjusted in real time according to the relative satellite between the satellite and the target point, and the orbit maintenance subsystem It includes an inertial acceleration measurement unit and a low-thrust execution unit, which are used to realize the satellite orbit autonomous maintenance based on continuous low-thrust, so as to ensure stable flight during satellite imaging.
Description
technical field [0001] The invention relates to the field of aerospace technology, in particular to an imaging control technology of an earth observation satellite. Background technique [0002] Earth observation satellites are widely used in weather forecasts, forest surveys, national censuses, ocean forecasts, disaster monitoring, map surveying and military reconnaissance, etc., and play an indispensable role in national economy, social development and national security. In order to facilitate the acquisition of high-resolution images of targets, earth observation satellites usually use medium and low orbit satellites. [0003] Due to the low altitude of the orbit, atmospheric resistance has a significant impact on the orbit. Therefore, the existing low-orbit satellites usually use high-thrust orbit correction to achieve orbit maintenance. However, strong interference is easily introduced during high-thrust orbit control. If at this time When the satellite captures the de...
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IPC IPC(8): G06T7/80B64G1/66B64G1/10G05D1/08
CPCG06T7/80B64G1/1021B64G1/66B64G1/1028
Inventor 鹿艺祁海鸣忻俊杰吴培德
Owner INNOVATION ACAD FOR MICROSATELLITES OF CAS