耐高温氟醚橡胶粘接工艺研究

阐述了耐高温氟醚橡胶粘接的难点，分析了传统工艺的缺点。经过大量试验及细致分析，在工艺上进行了大胆摸索，通过工艺方案调整，使粘接强度有了大幅度提高，粘接分布均匀，效果良好，耐高温性能十分稳定，完全能满足使用要求，产品的稳定性和安全性得到保障。     

EDA技术应用及其仿真实验室建设方案

本文介绍了EDA技术在工程和教学上的应用，并结合建设电子电路仿真实验室的实践，探讨了其主要软、硬件配置，提出了该实验室的建设方案。     

基于MFC DAO的叶轮加工数据库程序设计

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一种利用极化信息的HRRP-ATR方法

在研究了单极化条件下高分辨率距离像的目标识别后，给出一种利用目标全极化信息的投票识别方法。实验结果表明，该方法具有较高的识别率。     

基于MC145152的VOR地面信标模仿仪频率合成器的设计与实现

本文提出了VOR地面信标模仿仪对频率合成器的要求,介绍了集成锁相环芯片MC145152的工作特性,验证了基于MC145152的PLL频率合成器在VOR地面信标模仿仪中的设计与实现的有效性。     

Coordinated lidar and TIMED observations of the quasi-two-day wave during August 2002–2004 and possible quasi-biennial oscillation influence

The Colorado State University sodium lidar, located in Fort Collins, CO (41N, 105W), is capable of both daytime and nighttime operations and has conducted a number of continuous multiple-day observational campaigns over the past few years. Three such campaigns, lasting between 80 and 90 h, were conducted during August 2002–2004 when mesospheric winds and temperature observations were collected simultaneously. These data were processed to extract the vertical structure and temporal evolution of the quasi-two-day wave, which was found to be significant in the power spectra. The quasi-two-day wave in temperature, zonal wind and meridional wind was analyzed for each year, indicating that the wave activity in 2003 was weaker than the other two years. Concurrent TIMED/SABER (2002–2004) and TIMED/TIDI observations (2004) in August were also processed. The SABER temperature shows a quasi-two-day wave with a dominant westward propagating zonal wavenumber four (s = −4) component in 2002 and 2004 but not in 2003. Analysis of the TIDI winds in August 2004 also indicates significant quasi-two-day wave activity, with the zonal wavenumber three and four components of comparable strength. The results of this coordinated ground-based lidar and TIMED satellite observations during August are presented. The possible influence of quasi-biennial oscillation on the inter-annual variability of the quasi-two-day wave is investigated.     

航天控制系统潜在分析技术应用研究

潜在分析技术是提高控制系统安全性与可靠性的一项重要的分析工具,它对查询运载火箭或导弹控制系统潜在问题与设计缺陷,保证系统安全性与可靠性具有非常重要的意义. 通过对国外潜在分析技术进行比较研究和对国内航天控制系统潜在分析技术的现状进行分析,得出重要结论:在航天领域应开发适合中国国情的人工智能计算机潜在分析技术,以保证火箭或导弹的安全性和可靠性.     

Thermospheric neutral density response to solar forcing

Recent measurements by the Solar EUV (Extreme Ultra Violet) Experiment (SEE) aboard the Thermosphere–Ionosphere–Mesosphere Energetics and Dynamics satellite (TIMED) provide solar EUV spectral irradiance with adequate spectral and temporal resolution, and thus the opportunity to use solar measurements directly in upper atmospheric general circulation models. Thermospheric neutral density is simulated with the NCAR Thermosphere–Ionosphere–Electrodynamic General Circulation Model (TIEGCM) using TIMED/SEE measurements and using the EUVAC solar proxy model. Neutral density is also calculated using the NRLMSISE-00 empirical model. These modeled densities are then compared to density measurements derived from satellite drag data. It is found that using measured solar irradiance in the general circulation model can improve density calculations compared to using the solar proxy model. It is also found that the general circulation model can improve upon the empirical model in simulating geomagnetic storm effects and the solar cycle variation of neutral density.     

单层共底燃料贮箱五种检漏方法研究

当今各国应用的运载火箭上，单层共底燃料贮箱的检漏方法大致可归纳为两种类型：真空检漏法和累积法检漏。真空检漏法又可细分为单孔漏率叠加法（也称小真空罩盒法）、大罩帽真空法、大真空罐法；而累积法检漏也可细分为正压差累积法和累积法。对上述五种检漏方法通过可靠性、投资费用、检测时间三项技术指标进行了评估，认为单层共底燃料贮箱的使用状态采用累积法检漏较佳。     

BDS接收机星间载波相位偏差

BDS(BeiDou satellite navigation System,北斗卫星导航系统)的MEO/IGSO (Medium Earth Orbit/Inclined Geosynchronous Satellite Orbit,中圆地球轨道/倾斜地球同步轨道)卫星在D1导航电文上调制了NH(Neumann-Hoffman,奈曼-霍夫曼)二次编码,而在GEO(Geostationary Earth Orbit,地球静止轨道)卫星上未使用.利用北斗MEO/IGSO和GEO卫星进行差分定位时,采用不同NH码符号映射规则的接收机之间会出现半周载波相位偏差的问题,严重影响RTK (Real-Time Kinematic,实时动态差分)应用.通过分析半周载波相位偏差的形成机理,从单差、双差、三差应用角度分别研究了半周载波相位偏差的影响.分析结果表明,接收机NH码符号映射规则与卫星不一致时,接收机直接用乘法器对NH码解调将存在反相,也即引入了半周载波相位偏差;在满足特定条件下,单差和双差应用时会存在半周载波相位偏差的问题;三差应用时不存在半周载波相位偏差的问题.最后,提出了需在北斗接口控制文件中明确卫星NH码调制或映射规则的修订建议.