Deployment of Three-Body Chain-Type Tethered Satellites in Low-Eccentricity Orbits Using Only Tether  

作　　者：Cheng Jia Zhongjie Meng Bingheng Wang 

机构地区：[1]School of Astronautics,Northwestern Polytechnical University,Xi'an 710072,China [2]National Key Laboratory of Aerospace Flight Dynamics,Northwestern Polytechnical University,Xi'an 710072,China [3]Department of Electrical and Computer Engineering,National University of Singapore,Singapore 117583,Singapore

出　　处：《Space(Science & Technology)》2023年第1期478-486,共9页空间科学与技术（英文）

基　　金：sponsored by the National Natural Science Foundation of China(grant number 62173273);the Natural Science Basic Research Plan in Shaanxi Province of China(grant number 2020JC-19).

摘　　要：The tethered TSAR(tomographic synthetic aperture radar)system is a group of tethered SAR satellites that can be rapidly deployed and provide a stable baseline for 3-dimensional topographic mapping and moving target detection.Successful deployment is critical for TSAR tethered system.This paper discusses the deployment strategy for a 3-body chain-type tethered satellite system in a low-eccentric elliptical orbit.Two deployment strategies are discussed.Then,the tension on the tether is used to deploy it to the desired length and suppress its sway motion,resulting in an underactuated and input-constrained system.Hierarchical sliding mode control(HSMC)with anti-windup technology is employed to overcome the above challenges.In addition,the proposed approach includes the use of a disturbance observer to estimate the second derivative signal and a robust differentiator to estimate the sliding surfaces of the unacted subsystem.Finally,the effectiveness of the proposed deployment strategy is verified by MATLAB/Simulink.

关 键 词：MATLAB/Simulink system OVERCOME 

分 类 号：V47[航空宇航科学与技术—飞行器设计]