欧空局长期载人航天生命保障技术研究进展

欧空局长期载人航天生命保障技术研究进展郭双生，侯继东长时间、远距离和多乘员的载人空间飞行和出舱活动是２１世纪航天事业发展的必然趋势。对此，美、俄、欧、日等主要航天大国和组织均纷纷提出了自己的宏伟计划。其中关键问题之一是如何顺利实现生保消费品的持续供应...     

METHOD FOR DETECTING AND REPAIRING CYCLE SLIPS IN GPS NAVIGATION

A new method is proposed for detecting and repairing cycle slips in GPS navigation based on the dual frequency observations. It can be implemented through the following three steps: (1) The integer ambiguities of the current epoch are substituted by that of the previous epoch, so the ambiguity parameters are removed from the observation equations. (2) The abnormal observations are detected using the quasi accurate detection (QUAD) method and the satellite pairs of these abnormal observations are determined. Then the coefficient matrix of these satellite pairs is recovered. (3) The cycle slips of these satellite pairs are calculated using the LAMBDA method and integer ambiguities of the current epoch can be determined by adding the cycle slips into the integer ambiguities of the previous epoch. The key of this method is that the abnormal observations must accurately he detected, i.e. , the satellites having cycle slips must correctly be judged. Finally, compared with other methods the feasibility of the method is verified.     

载人航天工程软件工程化技术标准若干技术探讨

根据载人航天软件系统的新要求、新特点,针对载人航天工程软件工程化技术标准,从工程应用角度探讨软件系统设计、软件系统验证、软件安全性等技术问题,为标准的执行和进一步完善提供参考。     

空间能量粒子探测方法研究

阐述了空间能量粒子探测的原理和方法。介绍了国外在能量粒子探测方面所采用的半导体望远镜测量法、电场加速法、磁偏转法等方法，分析了它们各自的优缺点。就制约能量粒子探测技术发展的关键因素进行了讨论。并以此为基础，结合我国实际情况提出了一种新的探测方法。     

美国长期载人航天生命保障技术研究进展

美国长期载人航天生命保障技术研究进展郭双生美国是世界上第二号航天大国，继前苏联载人空间飞行之后，它第一个把人送上了月球，使人类这一千年梦想瞬息之间成为活生生的现实。与前苏联一样，他们也认识到长期载人航天是未来航天事业发展的必然趋势，而至关重要的是应建...