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带有太阳电池阵的卫星电源系统在轨测试方法 总被引:1,自引:0,他引:1
根据带有太阳帆板的地球同步卫星在轨测试需求,分析了星上电源系统的组成及技术状态;并以光照区可调节母线为例。给出了卫星电源系统在轨测试方法及相应的计算公式;最后,通过工程验证了该方法的正确性。 相似文献
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张立玮 《西安航空技术高等专科学校学报》2005,23(6):35-37
智力资本已成为高科技企业不断创新的基础和发展的关键性资源。正确认识智力资本的内涵及特征,挖掘智力资本的潜力,对培育高科技企业核心竞争力至关重要。通过对智力资本及其内容的分析,指出了高科技企业的智力资本应从保护、培育、运作上加强管理和积累。 相似文献
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变化缓变参数的自动判读是实现火箭测试数据自动判读的难点,已有的研究采用曲线拟合的思路进行判读,但拟合过程相当复杂,且不同的测试流程存在不同的拟合曲线,工作量极大.为提高判读效率,从变化缓变参数的物理意义出发,提出通过判别参数测量值序列之间的相关系数来实现变化缓变参数自动判读的方法.该方法对测量值序列进行先归一再累加生成的处理方式,克服了遥测系统测量误差对相关系数计算的影响,保障了判读准确性,同时减少了建立判读知识库的工作量.仿真结果表明,该方法运用简便,效果良好. 相似文献
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载人航天中任何人为操作错误都会对载人航天器系统和航天员的安全构成威胁。文章对载人航天器系统中人的操作特点进行了论述,并对保证载人航天器安全而进行的防操作失误设计问题进行了探讨。在此基础上,提出了进行载人航天器系统防操作失误设计的方法以及提高航天员操作可靠性的措施。 相似文献
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赵宁宁 《中国民航飞行学院学报》2011,(6):38-40
飞机放行评估是航空公司进行运行控制的一项重要内容,它直接决定了航空公司运行和服务的质量。文中通过对中国民航大学现有的教学资源和现用的教学方法进行介绍,并进一步提出改革建议,从而有助于更好地搭建实验平台,提高教学质量。 相似文献
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VxWorks嵌入式实时操作系统在某导弹火控系统中的应用 总被引:1,自引:0,他引:1
为提高某导弹武器系统火控系统的实时性和可靠性,将VxWorks嵌入式实时操作系统用于火控系统的软件设计中。根据不同任务间的关系,给出了主作业流程,以及内外网数据的接收与发送、软件运行时序、校时处理、录取报文、数据库设计等主要处理部分。阐明了该VxWorks实时操作系统的设计特点。导弹武器系统试验结果表明,该火控系统软件运行稳定可靠,控制状态转换清晰可控。 相似文献
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In the paper,a set of algorithms to construct synthetic aperture radar(SAR)matching suitable features are frstly proposed based on the evolutionary synthesis strategy.During the process,on the one hand,the indexes of primary matching suitable features(PMSFs)are designed based on the characteristics of image texture,SAR imaging and SAR matching algorithm,which is a process involving expertise;on the other hand,by designing a synthesized operation expression tree based on PMSFs,a much more flexible expression form of synthesized features is built,which greatly expands the construction space.Then,the genetic algorithm-based optimized searching process is employed to search the synthesized matching suitable feature(SMSF)with the highest effciency,largely improving the optimized searching effciency.In addition,the experimental results of the airborne synthetic aperture radar ortho-images of C-band and P-band show that the SMSFs gained via the algorithms can reflect the matching suitability of SAR images accurately and the matching probabilities of selected matching suitable areas of ortho-images could reach 99±0.5%. 相似文献
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James R. Drummond Jiansheng Zou Florian Nichitiu Jayanta Kar Robert Deschambaut John Hackett 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》2010
The MOPITT (Measurements of Pollution in the Troposphere) instrument has provided more than nine years of global carbon monoxide (CO) measurements on a continuous basis since its launch aboard the Terra Spacecraft on December 18th, 1999. This paper gives an overview of the core sub-system performance and major issues of the in-flight instrument over the mission period. Some of the instrument anomalies are also discussed. The major successes are: (1) the concept of using a combination of correlation systems such as Length Modulated Cells (LMCs) and Pressure Modulated Cells (PMCs) to retrieve CO profiles in the troposphere; (2) the redundant design in the instrumentation which was crucial for coping with unexpected in-flight anomalies and for continuing the mission in the case of component failure; (3) the thermal environment on orbit that is so stable that some calibration procedures are not necessary; and (4) the recent production of CO total column retrieved from the MOPITT 2.3 μm channel. 相似文献