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针对当前空间电子侦察、空间对抗的严峻形势,提出对地面军事电磁信息的天际防护系统。即针对有大量侦察卫星对地面防御系统所有电磁辐射信号进行侦收的现实,采取有效的反侦察措施,以适应太空作战制信息权任务的需求。明确了天际防护系统的作战使命以及应具备的主要功能,给出了系统的简要组成框图,具体分析了对地面电磁辐射信息的天际防护的相关问题,也提出了防护星组的布局问题等。最后,归纳了天际防护系统所应该专门研究的几个主要问题。 相似文献
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The authors examine psychological issues and countermeasures in extended space flight. Individual-oriented pre-flight countermeasures include basic psychological selection and training of astronaut candidates. Crew-oriented pre-flight countermeasures include crew composition based on psychological compatibility and psychological mission preparation. Psychological inflight support measures include those that address the emotional state and well-being of astronauts, performance efficiency, and prevention of task overload. Suggestions for an integrated approach to psychological countermeasures for extended flights are presented. Case reports examine psychological selection and training of German astronauts in preparation for the STS-55 mission. 相似文献
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The hazards of long-duration space flight are real and unacceptable. In order for humans to participate effectively in long-duration orbital missions or continue the exploration of space, we must first secure the health of the astronaut and the success of such missions by assessing in detail the biomedical risks of space flight and developing countermeasures to these hazards. Acquiring the understanding necessary for building a sound foundation for countermeasure development requires an integrated approach to research in physiology and medicine and a level of cooperative action uncommon in the biomedical sciences. The research program of the National Space Biomedical Research Institute (NSBRI) was designed to accomplish just such an integrated research goal, ameliorating or eliminating the biomedical risks of long-duration space flight and enabling safe and productive exploration of space. The fruits of these labors are not limited to the space program. We can also use the gained understanding of the effects and mechanisms of the physiological changes engendered in space and the applied preventive and rehabilitative methods developed to combat these changes to the benefit of those on Earth who are facing similar physiological and psychological difficulties. This paper will discuss the innovative approach the NSBRI has taken to integrated research management and will present some of the successes of this approach. 相似文献
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星载电子侦察与对抗技术主要用于对空间目标的侦收和检测,对于空间可能的威胁目标,实施有效的干扰。介绍了用于星载电子侦察与对抗的单机被动定位技术,基于单脉冲光纤延时复制的低截获概率雷达技术,并行信号检测与分选技术以及电子干扰技术。 相似文献
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从电子/信息对抗的概念出发,概述了空间对抗的发展,分析现代高科技条件下信息战对卫星电子/信息对抗的需求,在此基础上提出卫星电子/信息对抗系统设想。 相似文献
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空间信息对抗形势日趋严峻,在提出微纳卫星概念的基础上,阐述空间信息对抗的特点和策略,指出微纳卫星在空间信息对抗体系中的优势和应用前景;概括介绍微纳卫星在空间信息对抗中的典型应用;最后梳理微纳卫星在空间信息对抗应用中的关键技术。 相似文献
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Changes in body fluids, electrolytes, and muscle mass are manifestations of adaptation to space flight and readaptation to the 1-g environment. The purposes of this paper are to review the current knowledge of biomedical responses to short- and long-duration space missions and to assess the efficacy of countermeasures to 1-g conditioning. Exercise protocols, fluid hydration, dietary and potential pharmacologic measures are evaluated, and directions for future research activities are recommended. 相似文献
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国际空间法是指调整国家、国际组织之间开展外空探索、利用、开发活动中权利义务规则的总称。狭义的国际空间法仅指以联合国外空五大公约为核心的国际条约体系,对于缔约国是具有强制的法律约束力的;广义的国际空间法还包括联合国大会决议和联合国外空委大会文件在内的不具有法律约束力、但具有很强的政治约束力的外空国际活动规则。中国1983年加入《外空条约》,1988年加入《营救协定》、《责任公约》和《登记公约》,没有加入《月球协定》。文章分析前4个公约以及《遥感原则》、《防止在外空部署武器条约草案》、"外空透明与建立信任措施"联大决议、《外空活动长期可持续准则草案》等不具有法律约束力的文件,简要分析其对中国航天活动可能产生的限制和影响,并提出对策、建议。 相似文献
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In the past, space life sciences has focused on gaining an understanding of physiological tolerance to spaceflight, but, for the last 10 years, the focus has evolved to include issues relevant to extended duration missions. In the 21st century, NASA's long-term strategy for the exploration of the solar system will combine the assurance of human health and performance for long periods in space with investigations aimed at searching for traces of life on other planets and acquiring fundamental scientific knowledge of life processes. Implementation of this strategy will involve a variety of disciplines including radiation health, life support, human factors, space physiology and countermeasures, medical care, environmental health, and exobiology. It will use both ground-based and flight research opportunities such as those found in current on-going programs, on Spacelab and unmanned biosatellite flights, and during Space Station Freedom missions. 相似文献
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CCSDS空间链路层协议识别技术研究 总被引:1,自引:0,他引:1
针对空间链路层通信协议在合作目标和非合作目标两种背景下的应用情况,提出一种适合于CCSDS协议识别的方法。详细分析了协议识别技术的实际研究现状,介绍了CCSDS协议特征提取方法和特征模型建立算法,并利用多类型仿真数据和实际航天任务数据为样本检验了算法可行性,得出了误码率对识别效果的影响关系。研究成果对空间信息对抗中的协议识别技术研究具有借鉴意义。 相似文献