Staring Imaging Attitude Tracking Control Laws for Video Satellites Based on Image Information by Hyperbolic Tangent Fuzzy Sliding Mode Control

Abstract

This paper studies the staring imaging attitude tracking and control for satellite videos based on image information. An improved temporal-spatial context learning algorithm is employed to extract the image information. Based on this, a hyperbolic tangent fuzzy sliding mode control law is proposed to achieve the attitude tracking and control. Furthermore, the hyperbolic tangent function and fuzzy logic system are introduced into the sliding mode controller. In the experiments, the improved temporal-spatial context learning algorithm is applied for the image information of the space target video sequence captured by Jilin-1 in orbit, where the image information is used as the input of the control loop. Moreover, the proposed method is realized through simulation. Besides, the image change caused by attitude adjustment is achieved successfully, and the target imaging can be located in the center of the image plane to realize the gaze tracking control of the space target effectively.

An Attitude Adaptive Integral Sliding Mode Control Algorithm with Feedforward Compensation Disturbance Observer for Microsatellites to Track High-Speed Moving Targets

“…Video microsatellites offer continuous target observation, which, coupled with short development cycles and low costs, makes microsatellites widely applicable. Gaze tracking of targets is a primary operational mode for video microsatellites [1,2]. However, for high-precision target gaze under high resolution and narrow field of view, the attitude control precision of microsatellites has strict requirements.…”

An Attitude Adaptive Integral Sliding Mode Control Algorithm with Disturbance Observer for Microsatellites to Track High-Speed Moving Targets

“…in real-time target tracking, environmental monitoring, and other fields. Gaze tracking of targets is a primary operational mode for video microsatellites [1,2]. Especially for targets with unknown positions, it is necessary to use high-resolution cameras to image them and use image information to achieve continuous gaze tracking.…”