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6th IEEE Information Technology, Networking, Electronic and Automation control Conference, ITNEC 2023

作者： Lei, Shi Quanjun, Li Hao, Wang Keqiang, Xia Key Laboratory for Faults Diagnosis and Maintenance of Spacecraft in Orbit Xi'an China State Key Laboratory of Astronautic Dynamics Xi'an China China xi'An Satellite Control Center Xi'an China

ISBN: (纸本)9781665460033

Aiming at the problem of collocation of BeiDou GEO satellite with other satellites under complex constraints, a collocation safety situation model is designed based on orbital interactive data processing and collocation safety factor analysis. An optimized control algorithm based on coupling quantity estimation is proposed to solve the influence of orbit maintenance control on collocation safety trend. The simulation results show that the optimization control algorithm can reduce the influence of orbit maintenance control on the collocation safety factors by an order of magnitude. Combined with the safety situation model, the development trend of co-orbit safety factors can be effectively predicted. © 2023 IEEE.

关键词： Safety factor

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Multi-OP: A Multilevel Model for Orbital Prediction Using Multi-Feature Fusion 13

Multi-OP: A Multilevel Model for Orbital Prediction Using Mu...

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13th International Conference on Intelligent control and Information Processing, ICICIP 2025

作者： Chu, Qinghao Wang, Zhelong Jiang, Yu Hou, Pengrong Zhang, Pinliang School of Control Science and Engineering Dalian University of Technology Dalian China State Key Laboratory of Astronautic Dynamics Xi’an Satellite Control Center Xi’an China Beijing Institute of Spacecraft Environment Engineering China Academy of Space Technology Beijing China

ISBN: (纸本)9798331516147

To address the increasing computational demands and the need for enhanced stability in the orbit prediction of large-scale resident space objects (RSOs), this paper proposes a novel method grounded in orbital dynamics, which defines and computes environmental, dynamical, and fingerprint features. A feature fusion strategy is then applied to introduce a Multi-OP model comprising a shared backbone and a prediction layer tailored for orbit prediction tasks. Specifically, the shared backbone integrates environmental and dynamical features to capture public information, thereby enhancing the model’s generalization ability. The prediction layer, in contrast, leverages fingerprint features to generate individualized orbit predictions for each RSO. Experimental results demonstrate that the Multi-OP model not only enhances the accuracy of orbit prediction but also exhibits remarkable stability. © 2025 IEEE.

关键词： Prediction models

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The Design and Realization of Information Security Technology and Computer Quality System Structure 2

The Design and Realization of Information Security Technolog...

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2nd IEEE International Conference on Artificial Intelligence in Everything, AIE 2022

作者： Hu, Yuanyuan Cao, Xiaolong Li, Guoqing Xi'an Satellite Control Center Key Laboratory for Fault Diagnosis & Maintenance of Spacecraft in Orbit Xi'an China Xi'an Satellite Control Center State Key Laboratory of Astronautic Dynamics Xi'an China

ISBN: (数字)9781665474009

ISBN: (纸本)9781665474009

With the development of computer technology and information security technology, computer networks will increasingly become an important means of information exchange, permeating all areas of social life. Therefore, recognizing the vulnerabilities and potential threats of computer networks as well as various security problems that exist in reality, designing and researching computer quality architecture, and ensuring the security of network information are issues that need to be resolved urgently. The purpose of this article is to study the design and realization of information security technology and computer quality system structure. This article first summarizes the basic theory of information security technology, and then extends the core technology of information security. Combining the current status of computer quality system structure, analyzing the existing problems and deficiencies, and using information security technology to design and research the computer quality system structure on this basis. This article systematically expounds the function module data, interconnection structure and routing selection of the computer quality system structure. And use comparative method, observation method and other research methods to design and research the information security technology and computer quality system structure. Experimental research shows that when the load of the computer quality system structure studied this time is 0 or 100, the data loss rate of different lengths is 0, and the correct rate is 100, which shows extremely high feasibility. © 2022 IEEE.

关键词： Design

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Analysis of Optimal Orbital Capture Maneuver Strategy to LEO spacecraft Based on Space Debris Collision 8th

Analysis of Optimal Orbital Capture Maneuver Strategy to LEO...

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8th International Conference on Signal and Information Processing, Network and Computers, ICSINC 2021

作者： Ma, Hong Xi, Tao Sun, Shouming Zhou, Jianmin Wang, Qiancheng Xiao, Zhenguo Zhang, Wei State Key Laboratory of Astronautic Dynamics Xi’an710043 China State Key Laboratory of Spacecraft In-Orbit Fault Diagnosis and Maintenance Xi’an710043 China Xi’an Satellite Control Center Xi’an710043 China Beijing Institute of Control Engineering No.104 Youyi Road Beijing100194 China

ISBN: (纸本)9789811933868

With the increasing of multi-satellites launching mission, contradiction between operationally orbit maneuver deployment of spacecraft and collision avoidance of space target becomes prominently. In this article, a spacecraft maneuver strategy analysis for the design optimization of orbit capture with collision avoidance is presented. With the linear relationship between maneuvering pulse and spacecraft relative motion is formulated, the analytical model of trace drift nearest distance and crossing space debris time with velocity pulses is proposed. Considering the constraints of TT&C resources, orbit determination accuracy calibration, attitude and orbit control propulsion system calibration, maneuver time limit, space target avoidance and so on, the optimization process of optimal orbital maneuver pulse is designed based on synthetic error estimation. An orbit altitude capture maneuver of triple-LEO spacecraft launching with one vehicle is designed, the simulation shows that the optimal first maneuver pulse and orbit acquisition strategy are presented, which has good engineering operability and applicability. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Space debris

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Development Trend Layered Technology Optimization Strategy in Computer Software Development 2

Development Trend Layered Technology Optimization Strategy i...

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2nd International Conference on Computing and Data Science, CONF-CDS 2021

作者： Cao, Xiao-Long Hu, Yuan-Yuan State Key Laboratory of Astronautic Dynamics Xi'An Satellite Control Center Xi'an China Key Laboratory for Fault Diagnosis and Maintenance of Spacecraft in Orbit Xi'an China

With the development of society and the rapid progress of science and technology, computer software development technology has brought new development trends, among which layering technology is a relatively common technology in software development. This article has conducted a series of research and discussion on the development trend of layered technology in the development of computer software. In modern society, the application of computer technology is more and more extensive, the technology used in computer software development is more and more diversified, and the traditional single-layer software system is more and more difficult to meet people's requirements. As the actual requirements of users continue to increase, the application of layered technology in computer software development is becoming more and more common. The globalization of information technology has not only changed people's production and lifestyle, but also improved people's quality of life, and promoted the continuous progress of society and the times. As an important development field in the information age, software technology plays an important role. The situation of globalization is becoming more and more obvious. As one of the main means of cultural communication, information globalization depends to a large extent on the development and popularization of the Internet, and determines the speed of globalization. The computer is the external outlet of the Internet. The upgrading of computers is getting more and more attention. The development of network technology provides opportunities for the development of computers. In the process of computer software development, layering technology has improved the computer's operational capabilities and data processing capabilities. These two improvements provide effective protection and bring us a better user experience. This article is based on the particle swarm algorithm to carry out research and discussion. The experimental research result

关键词： Software design

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Research on Collocation Situation Analysis and control Optimization of the BeiDou GEO Satellites

Research on Collocation Situation Analysis and Control Optim...

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IEEE Information Technology, Networking, Electronic and Automation control Conference

作者： Shi Lei Li Quanjun Wang Hao Xia Keqiang Key Laboratory for Faults Diagnosis and Maintenance of Spacecraft in Orbit Xi’an China China Xi'an Satellite Control Center Xi’an China State Key Laboratory of Astronautic Dynamics Xi’an China

关键词： Analytical models Satellites Simulation Predictive models Maintenance engineering Prediction algorithms Market research

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Multi-OP: A Multilevel Model for Orbital Prediction Using Multi-Feature Fusion

Multi-OP: A Multilevel Model for Orbital Prediction Using Mu...

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International Conference on Intelligent control and Information Processing (ICICIP)

作者： Qinghao Chu Zhelong Wang Yu Jiang Pengrong Hou Pinliang Zhang School of Control Science and Engineering Dalian University of Technology Dalian China State Key Laboratory of Astronautic Dynamics Xi’an Satellite Control Center Xi’an China Beijing Institute of Spacecraft Environment Engineering China Academy of Space Technology Beijing China

ISBN: (数字)9798331516147

ISBN: (纸本)9798331516154

关键词： Space vehicles Accuracy Computational modeling Information processing Fingerprint recognition Predictive models Orbits Stability analysis Intelligent control Convergence

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Development Trend Layered Technology Optimization Strategy in Computer Software Development

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Journal of Physics: Conference Series 2021年第3期1881卷

作者： Xiao-Long Cao Yuan-Yuan Hu State Key Laboratory of Astronautic dynamics Xi'an Satellite Control Center Xi'an China Key Laboratory for Fault Diagnosis & Maintenance of Spacecraft in Orbit Xi'an China

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Analysis of noncommensurate sampling effects on the performance of PN code tracking loops

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Science China(Technological Sciences) 2018年第6期61卷 893-905页

作者： YANG Jian YANG YiKang LI JiSheng LI HengNian YANG TianShe School of Electronic and Information Engineering Xi 'an Jiaotong University Xi 'an 710049 China State Key Laboratory Astronautic Dynamics (ADL) Xi 'an Satellite Control Center Xi 'an 710043 China Key Laboratory for Fault Diagnosis and Maintenance of Spacecraft in Orbit Xi 'an Satellite Control Center Xi 'an 710043 China

Noncoherent early-late processing （NELP） code tracking loops are often implemented using digital hardware for digital global positioning system （GPS） receivers. Noncommensurate sampling technology is widely used because it is viewed as an effective solution to cope with the drawback of digital effects. However, the relationship between the sampling rate and auto-correlation function （ACF） is not adequately characterized by traditional analysis. The principles for selecting the sampling rate are still not apparent. In order to solve this problem, we first analyzed the effects of different sampling rates on ACF and obtained the analytical form of a discrete auto-correlation function （DACF） for a noncommensurate sampling rate. Based on the result, the relationship between the step variation in DACF and NELP parameters such as sampling rate, integration time, and correlator spacing was determined. The maximum step variation size of DACF was also determined. However, considering the actual situation, additional factors such as code Doppler shift, precorrelation filter, and thermal noise may degrade the step variation of DACE The relationship between the step variation and these factors was analyzed separately. An appropriate sampling rate and appropriate correlator spacing were proposed to achieve the typical accuracy of measurement. The numerical simulation verified the validity of the above theoretical analyses, and finally, the conclusions and design constraints for the digital GPS receiver are summarized.

关键词： sampling rate code tracking loops heat dissipation GPS digital receiver

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Earth-phobos transfer with ballistic trajectory in the sun-mars system

Earth-phobos transfer with ballistic trajectory in the sun-m...

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AIAA Space and Astronautics Forum and Exposition, 2018

作者： Li, Xiangyu Qiao, Dong Beijing Institute of Technology School of Aerospace Engineering Beijing100081 China Key Laboratory of Autonomous Navigation and Control for Deep Space Exploration Ministry of Industry and Information Technology Beijing100081 China Key Laboratory of Spacecraft Dynamics and Control Ministry of Education Beijing100081 China

ISBN: (数字)9781624105753

ISBN: (纸本)9781624105753

In this paper, the low-cost Earth-Phobos transfer is designed by using the ballistic trajectory in the Sun-Mars system. The spacecraft is firstly captured at a low altitude into a high eccentricity ballistic trajectory, which naturally changes its orbit elements under the solar perturbation. When the ballistic trajectory has the same periapsis distance and inclination as Phobos orbit, the spacecraft will be captured into the target orbit. The property and design procedure of the proposed transfer is discussed. A two-direction shooting scheme and apoapsis Poincaré map are used to find the low-cost transfer opportunity. The two-steps differential correction strategy is applied to match the apoapsis states and a small correct maneuver is added to increase the flexibility of the ballistic transfer. Finally, the integrated trajectory design including interplanetary transfer, ballistic transfer and Phobos insertion is represented. By utilizing Sun’s gravity, the ballistic transfer requires less velocity increment than traditional transfer. It also provides multiple transfer opportunities and flexible periapsis conditions, which can provide a reference for the future Phobos exploration missions. © 2018, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.

关键词： Ballistics

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