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2012年质量，可靠性，风险，维修性及安全性工程国际学术会议

作者： Hang Zhou,Yuanjian Yang,Hong-Zhong Huang,Yu Liu,Weiwen Peng School of Mechatronics Engineering University of Electronic Science and Technology of China Chengdu,China

According to the necessity of reliability analysis for satellite system subjected to common-cause failures,the unreliability expression under a variety of common-cause condition is developed to analyze the unreliability of satellite system in this *** on static fault tree analysis of satellite system,the binary decision diagram is used to evaluate the reliability considering common-cause *** importance of prevention of common-cause failures in large structured redundancy system is verified by using practical calculation example.

关键词： satellite system binary decision diagram static fault tree analysis common cause failure reliability analysis

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Properties of multi‑GNSS uncalibrated phase delays with considering satellite systems,receiver types,and network scales

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satellite Navigation 2023年第3期4卷 92-106页

作者： Ping Zeng Zhetao Zhang Yuanlan Wen Xiufeng He Lina He Muzi Li Wu Chen School of Earth Sciences and Engineering Hohai UniversityNanjing 211100China Shanghai Aerospace Control Technology Institute Shanghai 201109China Department of Land Surveying and Geo‑Informatics The Hong Kong Polytechnic UniversityHong KongChina

The Wide-Lane(WL)and Narrow-Lane(NL)Uncalibrated Phase Delays(UPDs)are the prerequisites in the traditional Precise Point Positioning(PPP)Ambiguity Resolution(AR).As the generation mechanism of various biases becomes more complex,we systematically studied the impact factors of four satellite systems WL and NL UPDs from the perspective of parameter *** 100 stations in a global network are used to generate the *** results of different satellite systems show that the estimation method,update frequency,and solution mode need to be treated *** regional networks with different receiver types,JAVAD,and Trimble,are also *** results indicate that the receiver-dependent bias has an influence on UPD ***,the hardware delays can inhibit the satellite-side UPDs if these receiver-specific errors are not fully deployed or even ***,the temporal stability and residual distribution of NL UPDs are significantly enhanced by utilizing a regional network,with the improvements by over 68%and 40%,*** demonstrates that different network scales exhibit the different implication of unmodeled errors,and the unmodeled errors cannot be ignored and must be handled in UPD estimation.

关键词： WL UPD NL UPD satellite system Receiver type Network scale

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小卫星总体研制阶段安全性设计与验证分析

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Aerospace China 2021年第4期22卷 21-27页

作者： REN Xiangwen CHEN Baifeng DFH satellite Co. LTD.Beijing 100094

A safety design applies to every stage in a satellite system development life cycle to identify and analyze hazards in the satellite at a system level, eliminating or controlling various safety risks, while verifying the functions of the satellite system have safety characteristics, so as to optimize the satellite system for the best performance in terms of time and cost. This article comprehensively leverages such factors as satellite reliability, complexity and life cycle by considering the overall satellite safety work plan, hazard analysis, hazard sources, pyrotechnic devices and other module safety critical designs. Safety design measures were formulated to review and verify the effectiveness of system functions including a safe power supply to a satellite and pyrotechnic explosives to achieve the safety requirements of the satellite from a development stage. Safety design activities for each subsystem will ensure meeting the development requirements of the satellite system as a whole, and ensure the satellite system cannot be the cause of casualties, equipment damage, property loss, or have a health-threatening impact or detrimental impact on the environment.

关键词： satellite system development project safety design functional verification

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