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phased
相关语句
  阶段性
     Phased Analysis of Large Mining Depth Rock Mass Movement Observation
     大采深岩移观测阶段性分析
短句来源
     Application of the phased target teaching in the model unit
     阶段性目标教学在模式病房的应用
短句来源
     (3) The general characteristic of government's reason is analyzed: Idea, Phased, Consciousness and Guidance;
     (3)政府理性的一般特性分析:客观性与主观性、恒久性与阶段性、主动性与受动性、价值性与科学性的统一;
短句来源
     In the period from 1993 to 1998 the main thrust of reform in the publishing industry was the "phased shift" in the main characteristics from size and quantities to fine quality and high efficiency.
     从1993年开始到1998年,出版业改革的主线是由“规模数量为主要特征向以优质高效为主要特征”的“阶段性转移”;
短句来源
     According to features of CAD/CAM in numerical control technology and apply specialty and several years teaching reform, the reform measures and phased reform achievements on NC courses system, teaching method and practical teaching are systemized introduced in the paper.
     根据高职数控技术及应用专业CAD/CAM课程的特点,结合我校几年来的教学改革,系统地介绍了该课程在课程体系,教学方法,实践教学等方面的改革措施及所取得的阶段性成果。
短句来源
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  相控阵
     Study of Reduced-Rank STAP for Airborne Phased Array Radar
     机载相控阵雷达降维STAP研究
短句来源
     Research on SAR Auto-focusing Space-borne ScanSAR Image Processing and SAR Active Phased Array Design
     SAR自聚焦,星载ScanSAR成象和有源相控阵天线研究
短句来源
     Airborne Phased Array Radars Simulator System Design and Realization Research
     机载相控阵雷达模拟器系统设计与实现研究
短句来源
     Research on Resource Management Technology for Phased Array Radar and Its Network in Tracking System
     相控阵雷达及组网跟踪系统资源管理技术研究
短句来源
     Study on STAP for Phased Array Airborne Radar in Nonhomogeneous Environment
     非均匀环境下的相控阵机载雷达STAP研究
短句来源
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  “phased”译为未确定词的双语例句
     The Study of the Contrained-Path Monte Carlo Method in the Phased t-t′U Hubbard Model
     附相t-t′-U Hubbard模型的约束路径Monte Carlo方法研究
短句来源
     The phased locked loop system which is based on AC vector processor AD2S100
     基于交流矢量处理器AD2S100的锁相环系统
短句来源
     Phased mission system(PMS) consists of s series of consecutive and non-overlapping time basic mission phases.
     多阶段任务系统(phased mission system,PMS)包含了一系列具有时间连续且不相互覆盖的基本任务阶段。
短句来源
     Design of Bi-dimensional Phased Array for 250kHz Doppler Speed Log
     250KHz多普勒计程仪二维相控基阵设计
     Difficulties in Construction and Phased Acceptance '2002
     2002年三峡工程建设难度和阶段验收
短句来源
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  phased
In this paper, the near-field vector components were used to combine the FEM method and the uniform-geometrical theory of diffraction (UTD) method for analyzing phased array antenna mounted on an airborne platform.
      
Considering that the setup includes a great number of channels and occupies a large area, the diagnostic facilities ensure the phased testing of the spectrometer components.
      
We present constructions of cyclic two-dimensional array codes correcting phased and arbitrary rectangular burst errors; their encoding and decoding algorithms are also given.
      
Analogues of mRNA were phased into the ribosome using binding at the tRNAPhe P-site, which recognizes the UUU codon.
      
When solving an ion-exchange equilibrium problem it is usually taken into account that the ionite, according to a two-phased model, comprises microphases of a gel and an equilibrium solution.
      
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The paper includes two parts. The first part is a theoretical part, in which the characteristics of holography as applied to detection is discussed, and the notion of "detecting holography" is proposed. The principal difficulty encountered in applying elastic or electromagnetic waves to the earth media is the poor longitudinal resolution of monochromatic holography. Prom the viewpoint of the communication theory and the antenna array theory, the monochromatic holography is examined, and its relations to correlation...

The paper includes two parts. The first part is a theoretical part, in which the characteristics of holography as applied to detection is discussed, and the notion of "detecting holography" is proposed. The principal difficulty encountered in applying elastic or electromagnetic waves to the earth media is the poor longitudinal resolution of monochromatic holography. Prom the viewpoint of the communication theory and the antenna array theory, the monochromatic holography is examined, and its relations to correlation detection, matched filters as well as phased array anteenas are illustrated. Multifrequency synthetic detective holography is developed as a possible approach to the solution of longitudinal resolution problem. Its principles are discussed, its relations to the "impulse holography" and the formulas for the longitudinal resolution are deduced. Finally, examples of two-dimensional computer simulation are presented to illustrate the feasibility of the method.The second part is an account of experiments made in water-tank for the microwave multifrequency synthetic detecting holography. The results of computer reconstruction using interference-type holograms give evidence to prove the high resolution and good imaging quality of the method.

本文分两个部分。第一部分从理论上探讨了全息成象应用于探测时的特点,提出了“全息探测成象”的概念。指出对地层介质使用弹性波或电磁波时,关键问题是纵向分辨力低。作者从信息论和天线阵理论的观点探讨了单频全息成象,研究全息成象和相关检测、匹配滤波以及相控阵之间的联系,提出了多频合成全息探测成象作为解决纵向分辨力的一个方法。探讨了它的原理,指出了它和“脉冲全息成象”的关系,导出了纵向分辨力公式,并给出了二维理论模型计算的结果,以说明方法的可行性和应用前景。 第二部分为实验部分,叙述了多频合成微波全息探测成象的试验。采用二维干涉型全息图做了简单模型的水槽试验,由计算机成象的结果证实了多频合成法的高分辨力和良好的成象质量。

"Blind spots" is a well known phenomena occuring in the operation of the phased array "blind spots" means total reflection of input power Either of two conditions leads to total reflection, null of the radiation resistance or infinity of the admittance. This paper is to investigate these conditions. Through detail mathematical analysis, it is concluded that the null of the radiation is the only reason to cause total reflection i.e. ''blind spots" . Besides, approximate conditions for existence of the null...

"Blind spots" is a well known phenomena occuring in the operation of the phased array "blind spots" means total reflection of input power Either of two conditions leads to total reflection, null of the radiation resistance or infinity of the admittance. This paper is to investigate these conditions. Through detail mathematical analysis, it is concluded that the null of the radiation is the only reason to cause total reflection i.e. ''blind spots" . Besides, approximate conditions for existence of the null of the radiation resistance are give. We have also obtained some results different from those published in foreign literatures.

本文利用积分方程近似解方法,对平面相控阵天线的“盲点”进行了分析。分析结果表明,产生“盲点”(假如确实存在的话)是由于天线输入电导趋于零所致。文章还对国外文献的提法提出了不同的看法。最后本文还分析了天线输入电导趋于零所需要的一些条件。

A direction-controlled weighting factor of crossed-loop element radiation pattern is derived,which shows that under weighting condition the principle of pattern multiplication can be applied to phased circular arrays of arbitrarily-oriented crossed-loop elements. Up till now, the techniques for optimization are considered appropriate for an array of similarly-oriented identical directive elements. Such techniques are expressed by the ratio of two Hermitian forms. The paper holds that such techniques can...

A direction-controlled weighting factor of crossed-loop element radiation pattern is derived,which shows that under weighting condition the principle of pattern multiplication can be applied to phased circular arrays of arbitrarily-oriented crossed-loop elements. Up till now, the techniques for optimization are considered appropriate for an array of similarly-oriented identical directive elements. Such techniques are expressed by the ratio of two Hermitian forms. The paper holds that such techniques can be applied to phased circular arrays of arbitrarily-oriented crossed-loop elements.The paper proposes a formula of far-zone radiation field for phased circular arrays of arbitrarily-oriented crossed-loop elements, derives an expression of far-zone field for phased circular arrays of crossed-loop elements under the weighting condition, and the optimization formula by adjusting either complex excitation or phase.

本文导出了正交环元辐射场型方向可控加权因子。它表明:在加权条件下,不同取向正交环相控圆阵,可应用方向图相乘原理,把只适用于同样取向的相同有向元组成的阵,用Hermitian型比表示的方向增益最佳化理论,扩展到N个不同取向的正交环相控圆阵天线。

 
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