Monocular space target distance-measuring and angle-measuring method

Abstract

The invention belongs to the crossing field of space technology and computer vision, and discloses a monocular space target distance-measuring and angle-measuring method. The method comprises the following steps: (1) receiving a one-frame image of a space target shot by a single camera, namely a practically shot image Q; (2) pre-treating the practically shot image Q, extracting the space target from the background, thus obtaining a pretreated image S; and then detecting the target according to the pretreated image S, if the space target is completely located in the view field of the camera, entering the step (3), otherwise, entering the step (5); (3) extracting the feature of the space target and recognizing the posture of the space target; (4) computing the three-dimensional center distance Delta p and the posture angle of the space target; and (5) continuing processing until all images are completely processed. The method provided by the invention is simple in process; according to the method provided by the invention, only the three-dimensional structure and size information of the target are needed to be obtained, the target is not needed to be the cooperative target, and any star target is neither needed to be set on the target; and the method provided by the invention has the characteristics of wide distance-measuring range and high precision.

Description

technical field [0001] The invention belongs to the intersecting field of aerospace technology and computer vision, and in particular relates to a method for acquiring two-dimensional centroid distance and attitude angle information of a space object in an observation camera coordinate system. Background technique [0002] With the increasing number of space activities in the world, some space junk produced by abandoned satellites or space collisions will also appear, which has caused certain hidden dangers for the operation of spacecraft in space. In 2010, a U.S. satellite in orbit collided with a Russian satellite in orbit, which not only damaged the satellite but also produced a lot of space junk. In order to avoid space junk and avoid huge economic losses caused by collisions, it is necessary to develop space target measurement technology to obtain the space distance and orientation information of the target. [0003] Visual measurement technology is an emerging technol...

AI Technical Summary

Problems solved by technology

[0006] For the geometric size of the known target, the actual distance of the target is relatively far (above 100m), and there is no mark point on the target, and the target swings and rotates at a certain attitude angular velocity, the existing monocular ranging algorithm cannot provide Effective target space distance and angle information

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