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空中目标尤其是隐身目标,在局部战场发挥极其重要的作用,对此类目标的探测问题备受关注。天基探测具有\"站得高,看得远\"特点,对空中高速目标探测具有优势。本文基于空中典型隐身目标特性调研分析,结合天基探测特点,分析了天基探测的目标及背景特性,基于目标背景特性分析及空中目标探测任务特点,提出了天基采用红外点目标探测技术。针对强背景下的弱隐身目标探测难点,分析了天基探测的关键技术发展方向,分别是复杂背景抑制技术研究,高灵敏度探测技术研究以及加强目标背景耦合特性研究,为后续天基探测技术及探测系统论证研究提供参考。 相似文献
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面向应急管理的天基系统需求与构建设想 总被引:1,自引:0,他引:1
针对应急管理对天基系统提出的增强现场灾情信息传递保障能力和尽快完善天空地一体化应急观测体系的需求,在分析天基系统应具备的先进感知使能、通信使能、导航定位使能及智能使能基础上,提出了我国天基应急管理支援体系构建设想。通过发射中轨观测系统、高分光学强机动星座,以及增加地面机动测控数传站,加强和完善灾害应急遥感观测能力;通过天地一体化应急管理云平台实现灾情观测数据的处理和分发。为了尽快实现天基应急管理支援体系建设,提出应发展高、中、低轨协同的天基通信、导航、遥感卫星的建议。 相似文献
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针对卫星测控资源紧缺的现状,为满足未来大规模卫星用户对测控资源的使用便利性这一需求,研究利用天通卫星进行近地低轨卫星测控服务的能力。天通作为高轨移动通信卫星系统,具有传输实时方便、服务安全可靠和综合效费比高等多方面的特点。首先,分析了天通卫星对不同倾角、轨道高度卫星的测控覆盖时长,以及对载人航天任务空间站和火箭进行测控的服务能力。然后,基于天通民用系统现有的系统架构,详细介绍了天通系统支持低轨测控的系统改造方案以及工作流程。最后,结合目前的技术发展趋势和天通卫星能力现状,描述了天通卫星在天基测控和低速中继两种任务场景中的应用前景。 相似文献
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面向不同任务对目标、环境和态势等精细刻画需求,跨域分布式协同系统能够带来更大的测量范围、更高的定位精度、更全面的探测维度和更好的鲁棒性.与单域系统不同,跨域群体系统中,承载平台的运动空间、传感器能力和通信手段各不相同,通过智能化策略配置可有效地聚合不同维度、不同置信度的信息以实现不同域群体之间的高效协同.系统性分析了天... 相似文献
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激光武器的作战效能与发展趋势章雅平激光武器是一种利用激光束直接毁伤目标或使之失效的新概念武器,它具有能量集中、传输速度快、作用距离远、命中精度高、转移火力快、抗电磁干扰、能多次重复使用和作战使用效费比高等优点。由于激光武器具有一些其它武器系统所无法比... 相似文献
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讨论了弹道导弹防御(BMD)系统的构成和作战过程。着重分析了BMD系统中的天基信息链,包括天基信息获取和天基信息传输,最后指出了天基信息链在未来信息化战争中必然起着重要的作用。 相似文献
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空间动能武器系统仿真研究 总被引:1,自引:0,他引:1
在介绍空间动能武器系统的基础上 ,对整个系统建立了数学模型 ,进行了仿真 ,并且得到了符合实际、满足要求的仿真结果 ,最后提及了更高层次的仿真方法。达到了对整个系统的运行和性能进行仿真模拟的目的 ,为这一方向的仿真试验工作提供了一个实用可行的方法 相似文献
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《Space Policy》2013,29(4):251-257
The following paper reports the results of a research work carried from 2008 on the topic of strategies and determinants of space technology Transfer (TT). In particular, the aim of this study is to present: 1. The policies and strategies the major space agencies adopt for TT, 2. The operational mechanisms and determinants involved in the transfer of space technologies to other industrial sectors. To this extent we have conducted in the last five years: six case studies of large space agencies, four TT case studies concerning the construction of scientific satellites, two case studies focused on space to earth TT programs undertaken by the Japanese aerospace agency, and two TT case studies examining Italian space companies.The comparative and comprehensive analyses of these studies indicate that the space agencies of the more industrialized countries aim primarily at consolidating and developing the industrial systems in their own countries, which include the use of technology transfer programs, and that the transfer of space technologies follows the route “Earth–Space–Earth”. With regard to the determinants of the TT process, the most important of these correlate with the type of technology in transfer, whereas organizational, economic and financial determinants have less significance. 相似文献
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Collisions among existing Low Earth Orbit (LEO) debris are now a main source of new debris, threatening future use of LEO space. Due to their greater number, small (1–10 cm) debris are the main threat, while large (>10 cm) objects are the main source of new debris. Flying up and interacting with each large object is inefficient due to the energy cost of orbit plane changes, and quite expensive per object removed. Strategically, it is imperative to remove both small and large debris. Laser-Orbital-Debris-Removal (LODR), is the only solution that can address both large and small debris. In this paper, we briefly review ground-based LODR, and discuss how a polar location can dramatically increase its effectiveness for the important class of sun-synchronous orbit (SSO) objects. With 20% clear weather, a laser-optical system at either pole could lower the 8-ton ENVISAT by 40 km in about 8 weeks, reducing the hazard it represents by a factor of four. We also discuss the advantages and disadvantages of a space-based LODR system. We estimate cost per object removed for these systems. International cooperation is essential for designing, building and operating any such system. 相似文献
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付大安 《北华航天工业学院学报》2013,23(1):52-54
实施\"走出去\"战略,我国企业需要大量具有较强的业务英语交际能力并精通专业的复合型人才,但目前大多数企业严重缺乏具有业务英语交际能力的专业人才。而过于重视英语四、六级过级率的大学英语教学,只能培养出少数能满足企业这些要求的大学毕业生。我国的大学英语专业英语教学存在许多问题。本文作者主要从专门用途英语的两个核心特点(目标需求分析与学习需求分析)的角度对H工科院校的专业英语教学做了一项调查研究。 相似文献
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An air-breathing pulse-laser powered orbital launcher has been proposed as an alternative to conventional chemical launch systems. The aim of the present study is to assess its feasibility through the estimation of its achievable payload mass per unit beam power and launch cost. A transfer trajectory from the ground to a geosynchronous Earth orbit (GEO) is proposed, and the launch trajectory to its geosynchronous transfer orbit (GTO) is computed using the realistic performance modeled in the pulsejet, ramjet, and rocket flight modes of the launcher. Results show that the launcher can transfer 0.084 kg of payload per 1 MW beam power to a geosynchronous earth orbit. The cost becomes a quarter of existing systems if one can divide a single launch into 24,000 multiple launches. 相似文献
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In order to justify high expenditure during this period of financial crisis, Space Agencies have attempted to increase the returns on their investments in Space missions by encouraging the commercial use of advanced technologies. The development of a technology transfer process from Space to Earth not only benefits the Aerospace industry but also the network of national companies. Technology transfer has been shown to stimulate innovation in business and commerce, support economic growth and provide a return on public investment in research and development (R&D). The aim of this paper is to systematically review the Space technology transfer literature and to suggest directions for future research. The range of research and studies in the literature on this topic requires a systematic review to summarize the results in an unbiased and balanced manner and to interpret these in a way that highlights the research gaps. This article presents an overview of the dominant thinking (explicit in selected articles from 1995 to present), indicating the problems of analysis, research gaps and a future research program. 相似文献
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文章介绍了Kirtland空军基地的Phillips实验室的激光驱动飞片装置,对其设计原则、驱动方法和试验结果进行分析,并指出这种方法的优点和不足。 相似文献