The thesis studies how do the quality of gemel, the section of cable and the initial strain of cable-net influence the natural modal of space antenna. The results supply a theoretical foundation for optimization design of space antenna structure and dynamics study of space antenna structure. 研究了铰链质量、缆绳截面大小、索网初拉力等参数对天线固有频率的影响规律,为天线结构的动力学研究以及结构的进一步优化设计提供了理论基础。
At last, the detection experiments using a monopole antenna of UHF signals outside transformers are also carried out, which will provide experiment foundation for UHF partial discharge detection of transformer. 最后,利用单级发射天线作为信号源,对变压器箱体外局部放电的超高频检测进行了实验研究。
Multi-satellite TT& C system based on DBF antenna has advanced technology foundation and should be widely used in the future. 基于数字多波束天线的多星测控系统具有良好的技术基础和应用前景。
The methods presented in this paper are adaptable to identify various kinds of restraints stiffness of tower foundations, such as high-rise structures, bridge towers, chimneys and antenna towers, as well as the condition of foundation soil and stiffness of covered structure underground. 本文研究的方法适用于识别包括高层建筑、桥墩和各种高耸建筑物的高耸工程结构基础约束刚度,以及地基土和地下隐蔽结构刚度的情况。
In this paper an optimum design method for high gain microstrip antenna covered with dielectric layers is proposed. An optimum Design Method for the Construction of A Gigantic Deep Foundation Pit 本文提出了利用点源增益优化方法设计介质加盖的高增益微带天线的方法,所确定的各介质层的电厚度能保证天线取得最高的增益。大型深基坑施工方案的设计优化
The establishment and development of the multi-antenna information theory have revealed that the MIMO ( Multi-Input Multi-Output) technique can provide extraordinarily high spectral efficiency gain over the traditional single antenna systems, which have also laid the theoretical foundation for the invention and applications of space-time codes. 多天线信息理论揭示了多输入一多输出(MIMO:Multi-inputmulti-Output)技术所具有的远远超越于传统单天线系统的高效传输性能,为空时编码技术的产生与应用奠定了坚实的理论基础。
The stabilization scheme of antenna stabilization is the foundation of the development the whole system, and plays important role to the utility of the whole system. 天线稳定方案是整个系统研制的基础,而且从根本上决定了整个系统的性能。
Computation and Simulation on the Harmonic Frequency of the Torsional Vibration in the Drive of an Antenna Foundation System 天线座驱动系统扭转振动谐振频率的计算及仿真
The article introduces the FEM analysis and calculation of the drilling mould for installing the radar antenna, the analysis of the calculating results, and provides the foundation for the design of the drilling mould. 介绍了某雷达天线安装钻模的有限元分析计算,并对计算数据进行分析,为钻模结构设计提供依据。
The norm for the erection of the antenna tower and the building of the tower foundation is the content absent from the previous railway communication quotas, which is supplemented during the norm revision. 无线通信天线铁塔架设及基础定额,是以前铁路通信定额的缺项内容。在定额修订中,通过调查研究和综合分析,补充了此定额。
Electronic Scan Array is a new antenna system on the foundation of array antenna adapt to the requirement. 相控阵天线正是适应这种要求,在阵列天线基础上发展起来的一种新的天线体制和技术。
This model effectively reflected the antenna effect, non-uniform channel, scanning geometric distortion, system noise respectively. This model laid the theoretical foundation both for system design and image restoration such as super resolution. 3. 该模型有效反映了天线降晰效应、通道非均匀效应、扫描几何畸变、系统噪声对系统成像的影响,为成像系统设计奠定了理论基础,为超分辨等图像复原算法提供了依据。