Recent and future activities of the UN Office for Outer Space Affairs

This article discusses the development, and the current and future work, of the UN Office for Outer Space Affairs. The Office is active both as a source of information, education and training on space and as a secretariat to COPUOS and its Subcommittees; it also performs a role in the monitoring and implementation of various space-related legal treaties. Presently—and as part of the drive to use space to improve life on Earth—the bulk of its work is guided by the Vienna Declaration produced at UNISPACE III.     

基于ECSS标准的航天器姿轨控系统内1553B总线数据协议设计

摘要： 国内外航天器姿轨控系统广泛应用基于1553B内总线的体系结构.针对国内航天器姿轨控系统内部1553B总线数据协议不统一带来的可集成性、可扩展性和通用性差的问题，本文设计了基于ECSS标准的姿轨控系统内1553B数据总线协议，从姿轨控系统内部总线数据业务需求分析出发，提出了四层结构的数据协议体系结构，重点介绍了在应用支持层和链路服务层应用ECSS标准的总线协议设计，并说明了协议的应用情况.应用该国际通用的标准协议，有助于实现国内航天器姿轨控系统内1553B总线数据协议的标准化，进而提升姿轨控系统体系结构的可集成性、可扩展性、以及星载设备(含软件)的通用化.     

动态参数测量系统的电源可靠性设计

描述了具有热电池和带有低温加热电路的锂电池双备份的系统电源设计。介绍了当供电电源出现过压、欠压和中断情况时,系统的保护设计。提供了防护措施以保障热电池的安全性,并给出了系统总体设计框图。     

航天发展“十一五”规划

序言 航天是当今世界最具挑战性和广泛带动性的高科技领域之一,航天产业已成为国家的战略高技术产业。发展航天是增强我国经济实力、科技实力、国防实力和民族凝聚力的重要举措。     

Forest Fire Monitoring Methods and Applications of HJ-1A/B Satellites

Forest fire is a frequent natural disaster and spreads randomly across forestland.It can cause great damage and loss to forest resources,the ecological system and people’s life and property. It is necessary to monitor and detect forest fire at the beginning.     

The HEAO-3 French-Danish cosmic ray spectrometer: Preliminary results on the elemental abundances of cosmic ray nuclei in the iron peak

The French-Danish cosmic ray spectrometer was launched on HEAO-3 on September 20, 1979. This instrument was optimized to measure the charge composition and isotopic abundances of galactic cosmic rays with energies of about 0.5 to 7 GeV/nucleon, using the multi-Cerenkov detector technique and a flash tube hodoscope.The geomagnetic method used for isotope analysis required the accurate measurement of the momentum of each observed particle. The technique used and the problems involved are illustrated using observed data.The high charge resolution of the instrument permits complete separation of all chemical elements between Be and Ni, even at energies larger than 5 GeV/nucleon. Preliminary results are presented for relative abundances of individual elements 21 Z 28.