Efficient three-dimensional remote sensing satellite formation method

Abstract

The invention discloses an efficient three-dimensional remote sensing satellite formation method, which is characterized in that a plurality of space cameras required by three-dimensional imaging arerespectively mounted on a plurality of satellites, each satellite can independently carry out attitude control, and the plurality of satellites can conduct observation from different directions of a target through mutual cooperation of the attitude control. Each satellite can carry out long-time large-strip scanning imaging, and large-angle attitude maneuver is not needed in the three-dimensionalimaging process. The effective working time proportion of each satellite can be increased to nearly 100%.

Description

technical field [0001] The present invention relates to an efficient three-dimensional remote sensing satellite formation method, in particular to a satellite formation method for realizing efficient three-dimensional remote sensing on the global surface. According to the terrain characteristics of urban areas, it can efficiently produce high positioning accuracy "no occlusion, no shadow" "Digital Stereo Remote Sensing Products. Background technique [0002] The requirements for digital remote sensing products in the field of modern urban planning are getting higher and higher. Compared with aerial remote sensing, satellite remote sensing technology has the advantages of large range and high efficiency. Spatial three-dimensional remote sensing technology is an emerging technical field in recent years. It obtains the plane dimension and elevation dimension information of buildings in the target area by scanning multiple strips from different directions over the target area. ...

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Problems solved by technology

[0004] (1) The weight and volume of satellites using three-line array stereo imaging cameras are relatively large, and high-resolution stereo remote sensing is difficult to achieve on small satellites

[0005] (2) The included angles of the three observation lines of sight of the three-line array stereoscopic imaging camera are basically determined at the time of design, and cannot be changed on-orbit. The problem that the stereo model cannot be created due to lack of sufficient image information

[0006] (3) Satellites that use agile maneuvering must use high-torque servo mechanisms such as control moment gyroscopes (CMG), and the cost of attitude control components is relatively high

[0007] (4) Agile maneuvering satellites need attitude maneuvers to achieve stereoscopic observation from different angles. Imaging cannot be performed during attitude conversion, and the actual on-orbit imaging time is strictly restricted.

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