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satellite antenna
相关语句
  卫星天线
     An auto-controller for WT-1 satellite antenna
     WT-1卫星天线自动控制器
短句来源
     Quality Control and Development of Graphite/Epoxy Satellite Antenna Support Structure
     石墨/环氧卫星天线支撑结构研制与质量控制
短句来源
     Design of Vehicular Satellite Antenna Tracking System Based on DSP
     基于DSP的车载卫星天线随动系统设计
短句来源
     North-pointing method for satellite antenna
     一种卫星天线“指北”方法的设计与分析
短句来源
     Debugging of satellite antenna
     卫星天线方向的调试
短句来源
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  星载天线
     Reliability analysis of the deployment mechanism of a large satellite antenna based on the non-probabilistic model
     基于非概率模型的星载天线展开机构可靠性分析
短句来源
     Faulty Tree Analysis of the Deployment System of a Large Satellite Antenna
     大型星载天线的展开系统失效树分析
短句来源
     Analysis and Optimization of On-Orbit Thermal Performance for a Satellite Antenna under Space Radiation
     基于太空辐射的星载天线在轨热性能分析与优化
短句来源
     To improve the wide-angle scanning properties of the satellite antenna, we concentrate on the shaping of the main reflector of the Side-Fed Offset Cassegrain (SFOC) antenna by the method of the ray tracing and the idea of the optimization.
     为改善星载天线的宽角扫描特性,采用射线追踪的方法,通过优化的思想对侧馈偏置卡塞格伦(SFOC)天线的主反射面进行了面赋形设计.
短句来源
     A classification is made to deployed antenna according to the difference of antenna reflector and the deploying force. This paper discusses the condition of deployed antenna structure of space and forecasts the developments about satellite antenna.
     根据各种卫星不同的使用需要,星载可展开天线结构形式繁多,其分类方法也各不相同,根据星载天线反射面结构形式与天线展开驱动力的不同,对空间可展开天线结构的现状进行了比较系统的分析论述,并在此基础上,探讨了星载天线未来的发展趋势。
短句来源
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  “satellite antenna”译为未确定词的双语例句
     Communication in Moving Satellite Antenna Controlling System Based on C8051F130
     基于C8051F130的动中通天线控制系统
短句来源
     Analyze the adjustment of satellite antenna and searching satellite television program based on practice.
     根据实践,对卫星接收天线的调整与卫星接收机节目搜索问题进行了分析与归纳;
短句来源
     When only taken into consideration the earth rotation correction,the satellite antenna phase center offset and satellite orientation as well as relativity corrections,the static solution disagree to known coordinates with in 12 cm. The RMS is less than 5 cm.
     当仅考虑地球自转改正、卫星的天线相位中心偏差改正、相对论改正等影响时,静态解与已知坐标的差异小于12 cm,均方根(RMS)小于5 cm.
短句来源
     Coupling Dynamic Analysis of a Hoop Truss Deployable Satellite Antenna System
     环形可展天线星线耦合动力学分析
短句来源
     The need to constantly increase the capacity and efficiency of communication satellites has led to the advent and development of multibeam satellite antenna technology.
     卫星通信的发展及对卫星通信的容量和效率要求的不断提高,导致了卫星多波束天线的出现。
短句来源
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  satellite antenna
Simulation of a satellite antenna tuned by a plasma load
      
The analysis of global GPS data with these sets of calibration values reveals that the offsets and variations of the satellite antenna phase centers have to be considered, too, to obtain a consistent picture.
      
In addition, the long time-series facilitates the study of correlations of the satellite antenna corrections with several other parameters such as the global terrestrial scale or the orientation of the orbital planes with respect to the Sun.
      
The present approach allows the creation of a consistent set of receiver and satellite antenna patterns and phase center offsets.
      
Thus, two different satellite antenna patterns for Block II/IIA and for Block IIR with a range of about 4 cm and an accuracy of less than 1 mm could be found.
      
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This paper describes a method in which a shaped communication satellite antenna beam is generated. All mathematical formulas required for the method derived here and elsewhere are presented. As an example, a shaped beam for Chinese satellite is calculated. The final results are a group of the optimum feed coefficients for the component beam and a plot with the -3dB and -5dB gain contours on a satcentric map. The -3dB contour rounds the territory of China (not including the South sea) satisfactorily...

This paper describes a method in which a shaped communication satellite antenna beam is generated. All mathematical formulas required for the method derived here and elsewhere are presented. As an example, a shaped beam for Chinese satellite is calculated. The final results are a group of the optimum feed coefficients for the component beam and a plot with the -3dB and -5dB gain contours on a satcentric map. The -3dB contour rounds the territory of China (not including the South sea) satisfactorily with a gain of 27 dB.

本文提出了一种成形的通信卫星天线波束的产生方法。文中部分地推导了并系统地给出了波束成形计算所需的全部数学公式。做为一例,对中国卫星的成形波束进行了实际计算。计算结果是一组最佳子波束馈电系数和一张绘于星心球面地图上的天线增益等值线图。图中-3dB等值线满意地与中国国土(未含南海诸岛)相吻合。

The polarization mismatch between the beacon signal and radar antenna leads to that, in the error signal voltage of the receiver output, besides the fundamental normal component, there exist fundamental cross component, second harmonics, etc., and then lowers the angular tracking accuracy. By analyzing the case linearly-polarized beacon signal and elliptically-polarized radar antenna, the related formulas and curves are given. The case elliptically-polarized beacon signal and elliptically-polarized radar antenna...

The polarization mismatch between the beacon signal and radar antenna leads to that, in the error signal voltage of the receiver output, besides the fundamental normal component, there exist fundamental cross component, second harmonics, etc., and then lowers the angular tracking accuracy. By analyzing the case linearly-polarized beacon signal and elliptically-polarized radar antenna, the related formulas and curves are given. The case elliptically-polarized beacon signal and elliptically-polarized radar antenna is also illustrated. Formulas and curves may be used as a reference for determination of the polarization ellipticity of the satellite antenna or Earth station radar antenna.

目标信号和雷达天线之间的极化失配,导致接收机输出的误差信号电压中除基波正规分量外,还包含基波交叉分量和二次谐波分量等,降低了测角精度。通过对线极化目标信号和椭圆极化雷达天线匹配情况的分析和计算,获得了有关的公式和曲线。还对椭圆极化目标信号和椭圆极化雷达天线情况作了阐述。公式和曲线可作为选定卫星天线或地面站雷达天线椭圆极化率的参考依据。

This paper describes the test technology about distortions and the measurement results of antenna reflector of synchronous satellite under nonuniform temperature field in vacuum.In order to achieve cryogenic temperature-150℃ and elevated temperature 120℃on the reflector, the solar simulator and infrared heating cage were used to carry out synthetic heat, the cryogenic refrigeration of liquid nitrogen and the method of arranging various reflective plates were used. A larger temperature gradient and the satisfactory...

This paper describes the test technology about distortions and the measurement results of antenna reflector of synchronous satellite under nonuniform temperature field in vacuum.In order to achieve cryogenic temperature-150℃ and elevated temperature 120℃on the reflector, the solar simulator and infrared heating cage were used to carry out synthetic heat, the cryogenic refrigeration of liquid nitrogen and the method of arranging various reflective plates were used. A larger temperature gradient and the satisfactory effect of simulation were obtained. Four work conditions of solar radiation were simulated in the test, the distributions of temperature and strain on the reflector were measured correspon-dently, and the values of thermal deformation and displacements were calculated. This result have definite worth of reference for the structure design and analysis of the satellite antenna.

本文介绍了同步卫星天线反射器在真空非均匀温度场的变形试验技术及其测量结果。为了实现在反射器上达到低温-150℃、高温120℃,采用了太阳模拟器与红外加热笼综合加热、液氮致冷以及设置各种反射板的方法,获得了较大的温度梯度,使模拟效果较为满意。试验中模拟了太阳照射的四种工况,相应地测量了反射器上的温度与应变分布,并计算了热变形与位移值。该结果对卫星天线结构设计与分析有一定的参考价值。

 
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