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Projection area analysis method for rendezvous and docking laser radar cooperative target

A cooperative target, lidar technology, applied in the direction of using optical devices, re-radiation of electromagnetic waves, instruments, etc., can solve the problem that there is no method for analyzing the projected area of ​​laser radar for rendezvous and docking.

Active Publication Date: 2021-04-23
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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Problems solved by technology

Judging from the currently published literature and patents, there is no related projected area analysis method for rendezvous and docking lidar cooperation targets

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  • Projection area analysis method for rendezvous and docking laser radar cooperative target
  • Projection area analysis method for rendezvous and docking laser radar cooperative target
  • Projection area analysis method for rendezvous and docking laser radar cooperative target

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Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] A projection area analysis method suitable for rendezvous and docking lidar cooperative targets in the process of flying around the spacecraft. Firstly, according to the installation relationship of the cooperative targets, the pose and orientation of the cooperative targets in the coordinate system of each docking interface of the space station are obtained where M hd is the rotation matrix from the cooperation target coordinate system h to the docking surface coordinate system d, and is the position vector of the cooperative target in the coordinate system of the docking surface.

[0023] Then the relationship between the coordinate system d of the cooperation target docking surface and the system b of the space station is known The pose of the cooperative target can be converted to the system of the space station, for ...

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Abstract

The invention relates to a projection area analysis method for a rendezvous and docking laser radar cooperative target. The method comprises the following steps: obtaining the pose of the cooperative target in each docking surface coordinate system according to the installation relation of the cooperative target in a space station, and obtaining the pose of the cooperative target in the space station system according to the relation between the docking surface coordinate systems and the space station system; then obtaining the relationship between the space station body system and the space station orbit system according to the orbit data of the space station, and representing the pose of the cooperative target under the space station orbit system; similarly, obtaining the relationship between the laser radar coordinate system and the airship body system according to the installation relationship of the laser radar on the airship; and finally, connecting the space station track system and the airship body system through a J2000 inertial system, obtaining the relative pose relation between the cooperative target and the laser radar according to the flying-around track, and finally analyzing the projection area of the rendezvous and docking laser radar cooperative target in the flying-around process. Smooth butt joint in the flying-around process can be guaranteed.

Description

technical field [0001] The invention relates to a cooperative target projected area analysis method of a relative measurement sensor laser radar used in space rendezvous and docking, which is used for the development of the rendezvous and docking laser radar, and can also be extended to the design of the rendezvous laser radar of other rendezvous and docking spacecraft. Background technique [0002] Spaceship rendezvous and docking is a key technology of space technology. The relative measurement sensor lidar is used to measure the distance, speed, angle and angular velocity of two spacecraft from 30 kilometers in space to the final docking. [0003] During the process of the spacecraft flying around the space station, the projected area of ​​each group of cooperative targets in the direction of the laser radar line of sight changes at any time. Since the laser radar obtains the echo through the reflection of the cooperative target, the size of the projected area directly de...

Claims

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Application Information

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IPC IPC(8): G01B11/28G01S17/88
CPCG01B11/28G01S17/88
Inventor 颜坤刘恩海周向东岳永坚冯志辉袁林晨李伟雄
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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