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The space environment monitor aboard FY-2 satellite

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Science China(Physics,Mechanics & Astronomy) 2005年第1期48卷 26-32页

作者： zhu guangwu LI Baoquan WANG Shijin LIN Hua'an LIANG Jinbao SUN Yueqiang WU Weiqi The Center for Space Science and Applied Research Chinese Academy of SciencesBeijing 100080China

The space environment monitor(SEM)aboard FY-2 satellite consists of the high energy particle detector(HEPD)and the solar X-ray flux detector(SXFD).The SEM can provide real-time monitoring of flare and solar proton event for its operation at geostationary orbit and is also the first Chinese space system for monitoring and alerting solar proton *** the 23rd solar maximum cycle,almost all the solar proton events that took place in this period are monitored and some of them are predicted successfully by analyzing the characteristics of X-ray flare monitored by the *** basic variation characteristics of particle at geostationary orbit are found such as day-night periodic variation of particle flux,the electron flux with energy>1.4 MeV in the scope from 10 to 200/cm^(2).s-sr and the proton flux with energy>1.1 MeV in the scope from 600 to 8000/cm^(2)-*** during the time with no magnetic storm and solar eruption.

关键词： space environment monitor space weather solar proton event.

Space Environment Deteation of Chinese Meteorological Satellites

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空间科学学报 2004年第Z1期24卷 64-68页

作者： XU Ying WANG Shijin zhu guangwu LIANG Jinbao Center for Space Science and Applied Research The Chinese Academy of Sciences Beijing 100080 China Center for Space Science and Applied Research The Chinese Academy of Sciences Beijing 100080 China Center for Space Science and Applied Research The Chinese Academy of Sciences Beijing 100080 China Center for Space Science and Applied Research The Chinese Academy of Sciences Beijing 100080 China

This paper presents the space environment detection of Chinese geosynchronous and sun-synchronous meteorological satellites and gives a short perspective of space environment observations on board meteorological satel... 详细信息

关键词： Meteorological satellite, Space environment, Detection

China Space Environment Development

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空间科学学报 2008年第5期28卷 496-498页

作者： XU Ying WANG Shijin zhu guangwu LIANG Jinbao SUN Yueqiang Center for Space Science and Applied Research Chinese Academy of Sciences Beijing 100190

This paper presents Chinese space environment detection and parts of results,and gives a short perspective of space environment observations on Chinese future satellites.

关键词：中国空间环境研究进展空间计划

Remaining Useful Life for Heavy-Duty Railway Cast Steel Knuckles Based on Crack Growth Behavior with Hypothetical Distributions

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Chinese Journal of Mechanical Engineering 2024年第4期37卷 290-305页

作者： Chao Wang Tao zhu Bing Yang Shoune Xiao guangwu Yang State Key Laboratory of Rail Transit Vehicle System Southwest Jiao tong UniversityChengdu 610031China

The current research on the integrity of critical structures of rail vehicles mainly focuses on the design stage,which needs an effective method for assessing the service *** paper proposes a framework for predicting the remaining useful life(RUL)of in-service structures with and without visible *** hypothetical distribution and delay time models were used to apply the equivalent crack growth life data of heavy-duty railway cast steel knuckles,which revealed the evolution characteristics of the crack length and life scores of the knuckle under different fracture failure *** results indicate that the method effectively predicts the RUL of service knuckles in different failure modes based on the cumulative failure probability curves for different locations and surface crack *** study proposes an RUL prediction framework that supports the dynamic overhaul and state maintenance of knuckle fatigue cracks.

关键词： Heavy-duty railway Cast steel knuckle Remaining useful life Fatigue crack growth Hypothetical distribution

Super solar particle event around AD775 was found

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Chinese Science Bulletin 2014年第22期59卷 2736-2742页

作者： Dazhuang Zhou Chi Wang Binquan Zhang Shenyi Zhang Ping Zhou Yueqiang Sun Jinbao Liang guangwu zhu Ji Wu National Space Science Center Chinese Academy of Sciences

A rapid radiocarbon14C increase of 120/00in AD774–775 has been reported in cedar and oak tree *** far,the origin of the14C increase is still uncertain and the possible origin is either supernova or solar particle *** most possible origin of14C increase is strong solar flares and Coronal Mass Ejections(CMEs)with strong particles *** approaches to identify the strong historical solar particle events based on the rapid14C/10Be increase in tree/coral rings and ice cores,long duration strong auroras and geomagnetic storms are *** of the super auroras in AD775 was first found in a Chinese Chronicles Jiutangshu and it supports the views that the rapid14C increase and strong auroras around AD775 are most possibly caused by strong solar storms with intense particles *** was identified that the solar event around AD775 would be the strongest solar particle event in the past 11400 *** discovery is significant for the research on the history of solar activities,space weather and forecast,radiation of solar energetic particles and protection.

关键词：太阳耀斑子事件日冕物质抛射太阳高能粒子粒子辐射太阳风暴 14C 放射性碳

The Space Environment Monitors of Shenzhou Manned Spacecrafts

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空间科学学报 2004年第Z1期24卷 32-38页

作者： XU Ying zhu guangwu WANG Shijin QIN Guotai LIANG Jinbao SUN Yueqiang HUANG Xiuying YANG Xiaochao WANG Yue WANG Chunqin YE Haihua JING Guiru Center for Space Science and Applied Research The Chinese Academy of Sciences Beijing 100080 China

For the purpose of ensuring normal operations of Shenzhou (SZ) series of manned spacecrafts and cosmonauts' safety, Space Environment Monitors (SEM)are mounted on board SZ-2, 3, 4, 5. SEMs aim to detect the high energy particles, the low energy particles, charging potential, atmospheric desity and composition. Detection of SEMs enable us to understand better the space environment in the manned spacecraft's orbit, and to provide a good space environment services for the spacecraft and cosmonauts. In addition, by using the data from SEMs, we have achieved some scientific accomplishments, such as the energy spectra of precipitating electrons, the abnormal variety of atmospheric density and composition during geomagnetic disturbances, the electron angle distribution in the low orbit and so on.

关键词： Shenzhou manned spacecrafts Space environment Detect

Cross-calibration of high energetic particles data——A case study between FY-3B and NOAA-17

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Science China(Technological Sciences) 2013年第11期56卷 2668-2674页

作者： WANG ChunQin ZHANG XianGuo LI JiaWei HUANG Cong ZHANG XiaoXin JING Tao SHEN GuoHong ZHANG ShenYi CAO GuangWei SUN YueQiang LIANG JinBao zhu guangwu HAN Ying Center for Space Science and Applied Research Chinese Academy of Sciences University of Chinese Academy of Sciences National Satellite Meteorological Center National Center for Space Weather Beijing Institute of Petrochemical Technology

Cross-calibration of high energetic particle data is a primary requirement for the availability of multi-instrument, multi-spacecraft data. II also can provide a method to verify relative reliability of data from single satellite measurement. This pa- per presents a case study of energetic particles data cross-calibration between FY-3B and NOAA-17. A generally good agree- ment is acquired in the flux values and distribution trend of 2.5-6.9 MeV protons and 0.3-1.1 MeV electrons between FY-3B and NOAA-17 satellites. It suggests that the data observed by FY-3B is properly cross-calibrated. We can also confirm that energetic particles data observed by FY-3B satellite is available.

关键词： cross-calibration high energetic particle FY-3B

The geometric factor of high energy protons detector on FY-3 satellite

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Science China Earth Sciences 2014年第11期57卷 2558-2566页

作者： ZHANG ShenYi ZHANG XianGuo WANG ChuiQin SHEN GuoHong JIN Tao ZHANG BinQuan SUN YueQiang zhu guangwu LIANG JinBao ZHANG XiaoXin LI JiaWei HUANG Cong HAN Ying Center for Space Science and Applied Research Chinese Academy of Sciences National Center for Space Weather Beijing Institute of Petrochemical Technology

Geometric factor is the key parameter for inversion of particle spectrum in space particle detection. Traditional geometric factor is obtained through the method of numerical calculation with the actual structure of the detector as the input condition. The degree of accuracy for data inversion is reduced since traditional geometric factor fails to take into account the physical process of interaction between the particle and substance as well as the influence of factors such as the particle interference between different energy channels on the measurement result. Here we propose an improved geometrical factor calculation method, the concept of which is to conduct actual structural modelling of the detector in the GEANT4 program, consider the process of interaction between the particle and substance, obtain the response function of the detector to particles of different energy channels through the method of Monte Carlo simulation, calculate the influence of contaminated particle on the geometrical factor, and finally get the geometrical factors for different energy channels of the detector. The imrpoved geometrical factor obtained through the method has carried out inversion for the data of high energy protons detector on China's FY-3 satellite, the energy spectrum after which is more in line with the power law distribution recognized by space physics. The comparison with the measured result of POES satellite indicates that the FY-3 satellite data are in good accordance with the satellite data, which shows the method may effectively improve the quality of data inversion.

关键词： geometrical factor response function particle radiation space detection FY-3

依山而建傍林而居——杭州和家园规划与建筑设计

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建筑学报 2011年第2期 46-47页

作者：朱光武艾侠中建国际设计顾问有限公司上海200233

1设计背景：杭州近郊的高端住宅在中国人的记忆之中,杭州一直是一个山水秀丽的宜居城市。多年以来,由于周边山区地形的限制,杭州城市版图始终没有在南端出现大规模的扩张。这恰恰使得杭州南郊的高端住宅项目极易获得区域市场的关注,位... 详细信息

1设计背景：杭州近郊的高端住宅在中国人的记忆之中,杭州一直是一个山水秀丽的宜居城市。多年以来,由于周边山区地形的限制,杭州城市版图始终没有在南端出现大规模的扩张。这恰恰使得杭州南郊的高端住宅项目极易获得区域市场的关注,位于留下镇的杭州＂和家园＂项目即为其中的一个典型案例。

关键词：杭州建筑设计家园规划宜居城市住宅项目设计背景山区地形