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本文从国家空间基础设施体系建设全面推进的背景出发,通过借鉴国外空间对地观测数据应用市场现状、典型商业数据公司组织管理与运营模式、未来数据应用市场发展趋势等3方面的经验,结合我国实际,提出加快推进空间对地观测数据应用和市场化发展的措施建议,促进我国空间对地观测数据应用市场的发展。 相似文献
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简要介绍了现代控制理论的发展情况,详细论述了现代控制理论中几种控制方法在一些复杂控制系统设计中的应用。 相似文献
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针对智能自主控制系统所涉及的自主感知技术、自主决策技术和控制执行技术的研究现状进行了分析和总结,剖析了目前航天器控制系统在应对不确定环境时面临的困境。结合未来空间任务对航天器能力的需求,提出了一种新型"感知-演化-决策-执行"(OEDA)星上闭环控制框架,探讨了其特点和功能,进一步阐述了OEDA控制框架中所涉及的理论与方法,最后分析了该控制框架实际应用和进一步发展需解决的关键科学问题。 相似文献
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防空导弹导引方法研究综述 总被引:2,自引:1,他引:1
对防空导弹武器的导引方法及研究进行了综述.介绍了三点法、前置角法、追踪法、平行接近法、比例导引法等经典导引方法的优缺点及在防空导弹中的应用.给出了基于最优控制理论、基于非线性控制理论和基于鲁棒控制理论的现代导引方法的优缺点与研究现状.讨论了导弹武器发展对空间导引律、考虑姿控回路导引律、考虑角度约束导引律、基于小弹目速度比导引律、离散导引律和基于姿态程序导引律等的需求. 相似文献
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本文综述和分析了现代航天器的发展及其对控制理论提出的挑战。这些挑战包括:①挠性空间结构动力学和控制;②鲁棒性和自适应控制;③高精度多变量控制系统的设计方法和理论;④容错控制系统的设计和人工智能研究;⑤大系统控制理论。 相似文献
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为了跟踪自适应结构控制技术的研究进展及其在空间结构中的应用情况,对自适应结构控制技术的研究现状进行了综述,分析了各种控制方法的特点,并介绍了自适应结构控制技术在航天领域的应用,在此基础上,提出今后工程应用应加强研究的问题。 相似文献
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Medical and surgical applications of space biosensor technology 总被引:1,自引:0,他引:1
Hines JW 《Acta Astronautica》1996,38(4-8):261-267
Researchers in space life sciences are rapidly approaching a technology impasse. Many of the critical questions on the impact of spaceflight on living systems simply cannot be answered with the limited available technologies. Research subjects, particularly small animal models like the rat, must be allowed to function relatively untended and unrestrained for long periods to fully reflect the impact of microgravity and spaceflight on their behavior and physiology. These requirements preclude the use of present hard-wired instrumentation techniques and limited data acquisition systems. Implantable sensors and miniaturized biotelemetry are the only means of capturing the fundamental and critical data. This same biosensor and biotelemetry technology has direct application to Earth-based medicine and surgery. Continuous, on-line data acquisition and improved measurement capabilities combined with the ease and flexibility offered by automated, wireless, and portable instruments and data systems, should provide a boon to the health care industry. Playing a key role in this technology revolution is the Sensors 2000! (S2K!) Program at NASA Ames Research Center. S2K!, in collaboration with space life sciences researchers and managers, provides an integrated capability for sensor technology development and applications, including advanced biosensor technology development, spaceflight hardware development, and technology transfer and commercialization. S2K! is presently collaborating on several spaceflight projects with dual-use medical applications. One prime example is a collaboration with the Fetal Treatment Center (FTC) at the University of California at San Francisco. The goal is to develop and apply implantable chemical sensor and biotelemetry technology to continuously monitor fetal patients during extra-uterine surgery, replacement into the womb, through birth and beyond. Once validated for ground use, the method will be transitioned to spaceflight applications to remotely monitor key biochemical parameters in flight animals. Successful application of NASA implantable biosensor and biotelemetry technologies should accelerate the advancement of this and other modern medical procedures while furthering the exploration of life in space. 相似文献
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现代雷达的特点及测试系统的发展方向 总被引:1,自引:0,他引:1
雷达测试在现代雷达系统中占有重要的地位。随着新体制雷达的发展和完善,新一代雷达测试系统将具备综合化、模块化、智能化、数字化、网络化等特点。文章详细分析了现代雷达系统对新一代雷达测试系统的要求,分别从MC^3一体化技术、虚拟仪器技术、网络测试技术以及智能传感器信息处理技术四个方面对新一代雷达测试系统进行了展望。 相似文献