A Simulation Method for Target Motion Smearing in Space-Based Optical Space Debris Surveillance Images

Abstract

The invention discloses a simulation method for target motion trailing in monitoring pictures of space-based optic space debris. The method comprises the following steps: (1) acquiring motion distance pixels of the space motion debris on an image of an imaging detector within a given integral time; (2) establishing a regional image according to the motion distance pixels and taking the pixel points by which the motion trailing passes on the regional image as the resident pixels of the debris motion trailing within the integral time Delta T; (3) taking each pixel resident on the image of the debris trailing as a sub-target and performing dot diffusion simulation on each sub-target Ri according to a gaussian model; (4) adding the energy overlapped areas between the adjacent sub-target gaussian dot diffusions and simulating the motion debris trailing. The simulation method for target motion trailing in monitoring pictures of space-based optic space debris, provided by the invention, has the advantages of accurate energy simulation model and no breakpoint under the condition of high-speed motion of the debris target.

Description

technical field [0001] The invention belongs to the technical field of space-based optical image simulation, and more particularly relates to a method for simulating a trailing motion of a target in a space-based optical space debris monitoring image. Background technique [0002] Space-based optical space debris monitoring images refer to space images taken by space-based optical systems outside the atmosphere. Since the imaging process is not affected by the atmosphere, cloud scattering and atmospheric attenuation, there is no restriction on the geographical deployment of ground-based observation platforms. One of the main means of fragmented information. In recent years, many space debris optical imaging detectors have been successfully developed and put into use, such as: the Space Based Visualization Sensor (SBV) of the United States, the European Space Situational Awareness System (ESSAS), and the Near Earth Space Surveillance Satellite (NESS) of Canada. Since space m...

AI Technical Summary

Problems solved by technology

Existing research focuses on the star map simulation technology of star sensors, but the angular velocity of stars in star sensors is relatively low, which is not suitable for high-speed moving space debris trail simulation, which will cause breakpoints and form false trails; solve There are few methods for simulating surveillance images of high-speed moving debris points in space, and the smear energy simulation model proposed for the space object surveillance image simulation method of the U.S. space-based visible light sensor (SBV) is not accurate; The simulation method does not consider the smearing effect caused by the target motion

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