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A high-order target phase approach for the station-keeping of periodic orbits

Astrodynamics 2024年第1期8卷 61-75页

作者： Xiaoyu Fu Nicola Baresi Roberto Armellin Surrey Space Centre University of SurreyGuildfordGU27XHUK Te PūnahaĀtea-Auckland Space Institute University of AucklandAuckland1010New Zealand

A novel high-order target phase approach(TPhA)for the station-keeping of periodic orbits is proposed in this *** key elements of the TPhA method,the phase-angle Poincare map and high-order maneuver map,are constructed using differential algebra(DA)techniques to determine station-keeping epochs and calculate correction maneuvers.A stochastic optimization framework tailored for the TPhA-based station-keeping process is leveraged to search for fuel-optimal and error-robust TPhA ***-satellite orbits(QSOs)around Phobos are investigated to demonstrate the efficacy of TPhA in mutli-fidelity dynamical *** Carlo simulations demonstrated that the baseline QSO of JAXA’s Martian Moons eXploration(MMX)mission could be maintained with a monthly maneuver budget of approximately 1 m/s.

关键词： target phase approach(TPhA) station-keeping Poincarémap differential algebra(DA) quasi-satellite orbit(QSO)

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Hayabusa2’s station-keeping operation in the proximity of the asteroid Ryugu

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Astrodynamics 2020年第4期4卷 349-375页

作者： Yuto Takei Takanao Saiki Yukio Yamamoto Yuya Mimasu Hiroshi Takeuchi Hitoshi Ikeda Naoko Ogawa Fuyuto Terui Go Ono Kent Yoshikawa Tadateru Takahashi Hirotaka Sawada Chikako Hirose Shota Kikuchi Atsushi Fuji Takahiro Iwata Satoru Nakazawa Masahiko Hayakawa Ryudo Tsukizaki Satoshi Tanaka Masanori Matsushita Osamu Mori Daiki Koda Takanobu Shimada Masanobu Ozaki Masanao Abe Satoshi Hosoda Tatsuaki Okada Hajime Yano Takaaki Kato Seiji Yasuda Kota Matsushima Tetsuya Masuda Makoto Yoshikawa Yuichi Tsuda Japan Aerospace Exploration Agency Sagarmihara 252-5210Japan The Graduate University for Advanced Studies Sagarmihara 252-5210Japan NEC Aerospace Systems LtdFruchu 183-8502Japan NEC Corporation Puchu 183-8501Japan

The Japanese interplanetary probe Hayabusa2 was launched on December 3,2014 and the probe arrived at the vicinity of asteroid 162173 Ryugu on June 27,*** its 1.4 years of asteroid proximity phase,the probe successfully accomplished numbers of record-breaking achievements including two touchdowns and one artificial cratering experiment,which are highly expected to have secured surface and subsurface samples from the asteroid inside its sample container for the first time in *** Hayabusa2 spacecraft was designed not to orbit but to hover above the asteroid along the sub Earth *** orbital and geometrical configuration allows the spacecraft to utilize its high-gain antennas for telecommunication with the ground station on Earth while pointing its scientific observation and navigation sensors at the *** paper focuses on the regular station-keeping operation of Hayabusa2,which is called“home position”(HP)-keeping ***,together with the spacecraft design,an operation scheme called HP navigation(HPNAV),which includes a daily trajectory control and scientific observations as regular activities,is *** the description on the guidance,navigation,and control design as well as the framework of optical and radiometric navigation,the results of the HP-keeping operation including trajectory estimation and delta-V planning during the entire asteroid proximity phase are summarized and evaluated as a first ***,this paper states that the *** operation in the framework of HPNAV had succeeded without critical incidents,and the number of trajectory control delta-V was planned fficiently throughout the period.

关键词： small body mission station-keeping guidance,navigation,and control(GNC) optical and radiometric navigation

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Electric Thrusters Redundancy Configuration Strategy Study for All Electric Propulsion Platform station-keeping

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Journal of Harbin Institute of Technology(New Series) 2018年第3期25卷 55-61页

作者： Min Wang Qiang Li Xin’gang Liang School of Astronautics Beihang UniversityBeijing 100191China China Academy of Space Technology Beijing 100094China

Electric propulsion is used for all electric propulsion satellites to perform the orbit transfer,attitude control and station-keeping tasks. Generally electric propulsion subsystem contains 4 thrusters. But if one thruster fails in the beginning of satellite lifetime,other thrusters will undertake all the firing tasks. The firing time will be 2 to 3 times of thrusters without failure. Thus it may go beyond the allow ed lifetime of thruster. This paper puts forward two thruster redundancy configuration solutions with 6 thrusters to solve this problem. Two layout configurations and their corresponding station-keeping strategies are simulated and compared. The results show that the maximum firing time of both layout configurations can meet the lifetime limitation. This solution is a good reference for all electric propulsion satellites design.

关键词： all electric propulsion satellite station-keeping electric thrusters configuration electric thruster layout failure redundancy

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Safety management of deep water station-keeping systems

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Journal of Marine Science and Application 2009年第2期8卷 83-92页

作者： Torgeir MOAN Centre for Ships and Ocean Structures Norwegian University of Science and Technology

Based on relevant in-service experience, this paper discusses how risks associated with station-keeping systems can be controlled through adequate design criteria, inspection, repair and maintenance practice, as well as quality assurance and control of the engineering processes. Particular focus must be placed on quantitative design for system robustness. The application of structural reliability analysis to quantify safety is briefly reviewed. In particular it was emphasized that reliability predictions based on normal uncertainties and variability yielded lower failure rates than those experienced for predictions of hulls and catenary mooring systems; gross errors in design, fabrication and operation were responsible. For this reason the broad safety management approach mentioned above was proposed. Moreover, it was found that this approach needed to be supported by a quantitative risk assessment. Finally, the challenges in dealing with the effects of human factors in risk management are outlined, along with means to deal with them in a qualitative manner, by the so-called barrier method to limit risk.

关键词： safety management offshore station-keeping

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Optimization of Stratospheric Airship station-keeping Strategy Based on LSTM-DQN Algorithm

Optimization of Stratospheric Airship Station-Keeping Strate...

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第43届中国控制会议

作者： Xiangrui Meng Zhibin Li Deping He Shandong University of Science and Technology

Stratospheric airships serve as crucial platforms for conducting applications in near space,and achieving their long-term station-keeping in high-altitude regions has been a focal point of *** study employs deep reinforcement learning,specifically integrating Long Short-Term Memory networks(LSTM) with Deep Q-networks(DQN) – referred to as LSTM-DQN – to enhance the station-keeping strategy of stratospheric airships within intricate wind *** leveraging predicted wind speed information,the research successfully realizes prolonged and effective residence in a target *** results demonstrate that,during the algorithm training process,the airship's control strategy progressively transitions to a more robust residence strategy,significantly enhancing residence duration.

关键词： stratospheric airships deep reinforcement learning station-keeping

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Laplace plane and low inclination geosynchronous radar mission design

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Science China(Information Sciences) 2017年第6期60卷 62-71页

作者： Stephen HOBBS Joan Pau SANCHEZ School of Aerospace Transport and Manufacturing Cranfield University

This study is inspired by the Laplace orbit plane property of requiring minimal station-keeping and therefore its potential use for long-term geosynchronous synthetic aperture radar(GEOSAR) imaging. A set of GEOSAR user requirements is presented and analysed to identify significant mission requirements. Imaging geometry and power demand are assessed as a function of relative satellite speed(which is determined largely by choice of orbit inclination). Estimates of the cost of station-keeping as a function of orbit inclination and right ascension are presented to compare the benefits of different orbit choices. The conclusion is that the Laplace plane(and more generally, orbits with inclinations up to 15°) are attractive choices for GEOSAR.

关键词： Laplace plane station-keeping geosynchronous inclination GEOSAR

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A Coordination Control Method for stationkeeping of Regressive Orbit Regional Coverage Satellite Constellation

A Coordination Control Method for Stationkeeping of Regressi...

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第25届中国控制会议

作者： Xiang Junhua , Zhang Yulin Institute of Aerospace and Material Engineering, National University of Defense Technology, Changsha 410073 Space Technology Research Center, Tsinghua University, Beijing 100084

＜正＞Studied the characteristic of the regressive orbit and its application in the regional coverage constellation, and designed a regional coverage constellation. Through studying on the equation of motion of substellar track, it may realize the correction about the deviation of the substellar track through controlling the deviation of ascending node right ascension, and through controlling the deviation of phase in the along-track direction, it may realize the correction about the relative positions between the regional coverage constellation satellites Using the deviation of semi-major axis and inclination have realized to control the rate of change of the deviation of ascending node right ascension and phase together. Simulation results for the regional coverage constellation confirm that the control method is valid.

关键词： Regressive Orbit Regional Coverage Satellite Constellation station-keeping Coordination Control

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