Fast detection method for spatial dynamic point target under moving platform

Abstract

The invention discloses a fast detection method for a spatial dynamic point target under a moving platform. The method comprises steps that the known target satellite absolute position information isutilized, M is taken as the allowable range, and N sequence star maps are opened to form N sequence windows with the size M; S2, time domain compression is performed on the three-dimensional image information in the windows, the projection algorithm is utilized, after taking the maximum envelope, a target star map is formed; S3, the binarization algorithm is utilized to complete background suppression of the target star map; S4, the linear extraction algorithm is utilized to complete trajectory extraction in the target star map; and S5, one or more trajectories in the target star map are interpreted to complete identification of the target trajectory. The method is advantaged in that a problem of fast detection of the spatial dynamic point target when a space camera is in the dynamic environment is solved, the application background of spatial dynamic point target detection is greatly improved, and the detection speed is improved.

Description

technical field [0001] The invention belongs to the technical field of spacecraft navigation, and in particular relates to the discovery and extraction of navigation targets, in particular to a rapid detection technology for space dynamic point targets under a moving platform. Background technique [0002] With the continuous advancement of space technology, the missions of space vehicles of various countries are becoming more and more complicated, the scope of action has developed from near-earth to deep space, the mode of action has developed from single star to constellation, and the content of missions has developed from single to complex. It is becoming more and more difficult for space vehicles to serve A single task maintains a single attitude. At the same time, the use of on-orbit optical camera constellation autonomous navigation and deep space autonomous navigation has also become a current research hotspot. However, due to the fact that the targets are too far ap...

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Problems solved by technology

However, the actual in-orbit aircraft has situations such as satellite platform jitter, visual axis offset relative to the platform, and inertial pointing due to mission requirements, etc., thus resulting in a more general problem of "knowing motion while moving", which is the problem proposed by the present invention. The problem of space dynamic point target detection under moving platform

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