Advances in the Researches of the Middle and Upper Atmosphere in China in 2014—2016

In this report the research results by Chinese scientists in 2014-2016 are summarized. The focuses are placed on the researches of the middle and upper atmosphere, specifically the researches associated with ground-based observation capability development, dynamical processes, and properties of circulation and chemistry-climate coupling of the middle atmospheric layers.      

Advances in Researches on the Middle and Upper Atmosphere in 2008-2010

This paper summarizes the results of the researches on the middle and upper atmosphere obtained by Chinese scientists in 2008-2010. The focuses are specifically placed on the researches being associated with ground-based observation capability development, dynamical processes, the property of atmospheric circulation and the chemistry-climate coupling of the middle atmospheric layers.     

Advances in the Researches of the Middle and Upper Atmosphere in China

In this report we summarize the research results by Chinese scientists in 2018-2020. The focuses are placed on the researches of the middle and upper atmosphere, specifically the researches on atmospheric structure and composition, climate and chemistry-climate coupling and climate modelling, dynamics in particular those inducing the coupling of the atmospheric layers.      

Advances in Researches on the Middle and Upper Atmosphere in 2010-2012

This article summarizes the researches on the middle and upper atmosphere by Chinese scientists in 2010?2012. The focuses are placed on the advances in construction of ground-based remote sensing facilities, the mean state and long-term changes in the middle atmosphere circulation, the prevailing dynamical processes, and the coupling of the middle atmospheric layers.      

中国微重力科学研究回顾与展望

微重力科学主要研究微重力环境中物质运动的规律，以及不同重力环境中重力对物质运动的影响.中国微重力科学研究起步于20世纪60年代，兴起于80年代中后期，经过多年发展，目前已初具规模，在一些重要方向具有明显特色和一定优势.本文回顾了中国微重力科学研究的早期历程，评述了近年来中国微重力科学研究进展，特别是利用实践十号科学实验卫星、天宫二号空间实验室等空间平台开展的微重力科学与技术应用研究取得的最新成果，并对中国载人空间站时代微重力科学发展的前景予以瞻望，推动微重力科学与应用研究在中国的快速、可持续发展.      

1980年中层大气温度波空间特征的初步分析

利用1980年Nimbus-7卫星网络点资料(温度场)对中层大气行星波的空间结构进行诊断和分析后发现,行星波扰动主要集中于冬半球,夏半球及赤道地区上空的扰动则相对较弱,但也不可忽视.冬半球行星波扰动中的瞬变波部分可以跨过赤道向夏半球传播,且传播主要集中于20kin和70km两个高度层附近.波数1冬季以准定常行里波为主,夏季瞬变行星波与准定常行星波波幅相当.行星波扰动的波幅从冬到夏的衰减主要表现在波数1和波数2上,波数3变化不大.      

月基平台对地观测数据传输链路方案设计及分析

数据传输及处理能力是月基平台构建中的一个重要问题,如何高效准确地传输海量对地观测数据至地球供后续研究是开展月基对地观测的关键环节。通过STK和MATLAB软件联合仿真,模拟月基平台对地观测数据传输链路,首次提出适用于月基平台的下行链路通信方案:通过构建中纬度地球站、最小间隔经度值为40°的2颗中继卫星组的设计方案,可以最大程度地实现全天候、无时断的信号传输,满足下行链路接收端获取足够强度和低误码率的信息,从而保障月基平台的运行。      

Progress in Space Material Researches

New progress in the post researches on space grown materials, the development of experiment facilities, and the experiment techniques for space materials researches were introduced. Besides the conventional materials, such as alloys, semiconductors, and optical crystals, new materials have also been prepared on the ground.     

顶部电离层总离子密度经度的变化

利用DMSP F13卫星1996-2005年共10年的观测数据,研究地磁中低纬地区黄昏时段(18:00 LT)顶部电离层总离子密度经度变化的季节、地磁纬度和太阳活动变化特征.结果表明总的经度变化在低纬地区与中纬地区具有明显不同特征.不同经度结构的季节变化均以年变化为主,但纬度分布具有明显差异.一波结构主要集中在中纬地区,且南半球明显强于北半球;二波结构南北半球不对称性非常明显;三波结构和四波结构均为低纬地区明显强于中纬地区.通过分析不同波结构对总经度变化的贡献发现,一波结构在南半球中纬地区贡献最大,二波结构在12月前后的15°N附近贡献较大,三波结构和四波结构仅在低纬地区有较强贡献.在不同太阳活动条件下,不同波结构的贡献率有明显变化.      

潜通路分析在飞行器电气系统设计中的应用

简要介绍了潜通路分析的概念、国内外发展现状，分析了与其他可靠性设计方法的关系，认为潜通路分析是可靠性分析的有效补充。结合具体案例分析潜在路径、潜在时序、潜在标志和潜在指示的问题产生和解决。最后展望了潜通路分析技术在飞行器设计中的应用前景。     

Progress of Research on Origins of Life in China

The development of Chinese space science and technology plays a great role in promoting the researches in the field of the origin of life. With the multidisciplinary cooperation, there are fruitful achievements in this research field obtained over the past two years. This report summarizes the major progress of the basic researches about the origin of life in China during 2018-2020.      

近地小行星威胁与防御研究现状

近地小行星与地球碰撞虽然罕见但可能会造成灾难性后果。近年来,各国加强了对近地小行星的监控、跟踪力度,并且实施了几次卓有成效的探测任务,如何防御近地小行星威胁的研究越来越多。总结了目前近地小行星的主要观测监视设施和现状,讨论了国际上对小行星威胁的评估情况,分析和评估了目前提出的防御手段的研究现状及其可行性。     

潜通路分析在飞行器电气系统设计中的应用

简要介绍了潜通路分析的概念、国内外发展现状,分析了与其他可靠性设计方法的关系,认为潜通路分析是可靠性分析的有效补充。结合具体案例分析潜在路径、潜在时序、潜在标志和潜在指示的问题产生和解决。最后展望了潜通路分析技术在飞行器设计中的应用前景。     

Space Life Science of China in 2013

In the past two years, space life science research in China is characterized by a wide area of basic researches for providing foundation for the future China Space Station. The effect of microgravity and radiation was further studied from physiology phenomena to the level of bio-molecule mechanisms. Chinese space life science is maturing in a new era of comprehensive development. Here, we review and summarize researches on space life sciences which were contributed by Chinese scientists.      

推力架测试系统误差的研究

针对卫星推进系统小推力测量的特点,主要是分析推力架系统所带来的推力误差,对引起推力误差的因素进行了分析研究,并提出了误差相应的解决方法和试验数据处理方法     

Progress of microgravity material research during the period of 2007—2009

Orbital experimental researches on crystal growth of Mn-doped GaSb and Bi2Se0.21Te2.79 are briefly summarized. The space experiments were completed in September of 2007 on broad the Foton-M3 satellite of Russia. Ground-based researches on the solidification behaviors of Al-Al3Ni, Al-Al2Cu, Ag-Cu eutectic, Al-Pb monotectic and Cu-Co peritectic alloys in a 50-meter-high drop tube were investigated. New experimental results on the ultrasonic field and the temperature recycling induced to chiral symmetry breaking of NaClO3 crystal also were reported in the present paper.      

Multi-Scale Physical Process in the Magnetosphere

The brief report presents a part of the research results of the magnetospheric physics researches in China during the period of 2006--2008.During the past two years,China-ESA cooperation DSP(Double Star Program)satellites were basically operating normally in its extended lifetime.The DSP and Cluster missions provide Chinese space physicists high quality data to study multi-scale physical process in the magnetosphere.The work made based on the data of DSP is presented in the paper of"Progress of Double Star Program"of this issue.      

Space Life Science of China in 2015

With the human space exploration activities, space life science is an emerging interdisciplinary and it covers a wide range of research. Based on our country's manned space station and recoverable satellite science experimental platform, the development of space life science research is very important to acquire new knowledge or new innovation in technology, to give further services to the human space exploration activities, to improve the national economic and social development. Based on present situation, both theoretical and applied researches were continuously performed in 2015. Here, we review and summarize the researches on space life sciences which were contributed by Chinese scientists.      

时间保持实验平台的设计与实现

中国科学院国家授时中心负责我国标准时间UTC(NTSC)产生、保持和发播。但是,国家授时中心的UTC(NTSC)保持硬件设备都处在实际应用运行中,不具备作为实验平台的条件,阻碍了对UTC(NTSC)保持工作的研究。为了解决这个问题,通过分析时间保持系统的硬件构成和软件部分,建立了自动监控实验平台。该实验平台具备时间保持的功能,可用于国家授时中心时间保持方面的研究工作。     

平流层冬季增温及大气中的行星波

本文利用NIMBUS-7SAMS资料分析了东经100度子午线上的两个站点(67.5°N和42.5°N)在10mb和0.0827mb高度上从1978年底至1982年间的大气温度,获得几年的平流层冬季增温结果.在1978/1979年和1981年初的冬季,高纬站点几天内出现的平流层增温最大幅度可达65K.对平流层增温的谱分析结果指出,在高纬冬季平流层有很强的16天、32夭、21天周期的行星波。中纬冬季平流层增温幅度较小,约为20K.中纬的中间层高度上整年存在有5天、8天和16天的行星波。分析研究、南、北半球不同纬度的温度随经度的分布,得出高纬冬季平流层、中间层大气温度随经度有明显的变化。波数1和波数2的波有大的幅度(主要是波数1),从高纬到低纬,波幅逐渐减小在冬季的平流层和中间层大气中,波数1和波数2的行星波在短期内可强烈增强,引起平流层冬季增温。