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Search Results: 1 - 10 of 40867 matches for " 匡光力 "
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低杂波电流驱动天线耦合的三维模型
The 3D Model of Antenna Coupling in LHCD System
 [PDF]

朱学, 丁伯江, , 谢纪康, 刘艳丽
Modern Physics (MP) , 2012, DOI: 10.12677/MP.2012.23007
Abstract: 通过数值计算对低杂波波导阵天线的耦合特性进行了模拟。采用三维天线耦合模型,考虑了波导沿环向及极向都为有限尺度,以及TETM模式的相互耦合。用数值积分的方法计算等离子体表面阻抗,利用此边界条件及波导口处电磁场的连续性。计算各波导在TE10主模2.45 GHz频率的低杂波信号的激励下,各TETM波导模式的反射系数。然后计算天线辐射的低杂波频率的功率谱分布。
The coupling performance of grills for lower hybrid frequency is obtained by digital simulation. The three dimensional model is adopted, namely considering the finite poloidal and toroidal sizes of the grills and coupling between TE modes and TM modes. The plasma surface impedance is estimated by digital integral method, and this boundary condition and the electromagnetic field continuity at the grills’ mouth are used. Under the main mode of 2.45 GHz lower hybrid frequency excited in the grills, the reflection factors of the TE and TM waveguide modes can be calculated. Then we obtain the lower hybrid frequency power spectrum distribution sent by the antennas.
THE PROPERTIES OF THE MHD OSCILLATIONS IN TEXTOR TOKAMAK PLASMAS
TEXTOR托卡马克等离子体的磁流体动力学振荡特性

KUANG GUANG-LI,GWAIDMANN,
,G.WAIDMANN

物理学报 , 1994,
Abstract: The properties of the N41-1D oscillations (Mirnov Oscillations) in ohmic TEXTOR tokamak plasmas are systematically described in this paper based on experimental data, including mainly the principal modes of the MHD oscillations and the correlaion among the oscillations, the propagating direction of the MHD oscillations, as well as the correlative properties among the oscillative temperature, density and density fluctuation of the m=2/n=1 mode.
诊断中性束时序控制系统的研制
苏禹,刘保华,杜少武,,黄河,丁同海
强激光与粒子束 , 2007,
Abstract: ?在研究了诊断中性束(dnb)对控制时序要求的基础之上,针对传统控制系统带来的低可靠性和低集成度等不足,研制了一套dnb时序控制系统:包括主要由pc机和pic单片机组成的硬件结构,以及在上下位机上开发的软件程序。实验表明该控制系统稳定可靠,为dnb装置投入ht-7实验奠定了良好的基础。
THE COUPLING CALCULATION OF A 3-DIMENSION CAVITY LOOP ANTENNA
三维洞穴环天线的耦合计算

ZHU XUE-GUANG,KUANG GUANG-LI,XIE JI-KANG,
朱学
,,谢纪康

物理学报 , 2000,
Abstract: In ion cyclotron resonance heating,a 2-dimension antenna model is used for the c avity loop antenna with comparatively complex bounding conditions,neglecting the influence of loop antenna parallel component for simplicity.The detailed calculation process of a 3-dimension antenna model is given in this paper.This model i s closer to the practical antenna,its calculation results can be used for the re ference of antenna design.
Iterative Classification of Polarimetric SAR Image Based on Freeman Decomposition and Scattering Entropy
一种基于Freeman分解与散射熵的极化SAR图像迭代分类方法

Zhao Li-wen Zhou Xiao-guang Jiang Yong-mei Kuang Gang-yao,
,周晓,蒋咏梅,纲要

电子与信息学报 , 2008,
Abstract: In this paper, a new iterative classification of polarimetric SAR image based on Freeman decomposition and scattering entropy is proposed. This technique extracts the powers of three scattering mechanism components through Freeman decomposition and scattering entropy through H/ decomposition first; Then using the four parameters which can characterize terrain divides the terrains of polarimetric SAR image into nine initial classes, and the final result is obtained by iterative classification with Wishart classifier. This method utilizes polarimetric scattering information of terrain with reason, can acquire good effect of classification and requires a little operation. The effectiveness of this method is demonstrated with the experimental results of polarimetric SAR datas measured practically.
FAST WAVE MINORITY ION HEATING
快波少数离子加热

ZHU XUE-GUANG,KUANG GUANG-LI,ZHAO YAN-PING,LI YOU-YI,XIE JI-KANG,
朱学
,,赵燕平,李有宜,谢纪康

物理学报 , 1999,
Abstract: The mechanism of fast wave minority ion heating is discussed in some detail. The ray tracing algorithm is used to simulate fast wave heating for the plasma of two kinds of ions, and the calculation results of different ratios of two ions' density is obtai
AN IMPROVED MODEL OF COUPLE CALCULATION OF ION CYCLOTRON WAVE HEATING
离子回旋波加热天线耦合的一种改进模型

ZHU XUE-GUANG,KUANG GUANG-LI,ZHAO YAN-PING,LI YOU-YI,XIE JI-KANG,
朱学
,,赵燕平,李有宜,谢纪康

物理学报 , 1998,
Abstract: The electromagnetic field distribution of ion cyclotron wave in tokamak geometry is discussed in detail in this paper.As for the problem that conventional antenna coupling slab model gives larger error to the calculation of large aperture antenna,an improved model is presented that can upgrade the calculation precision greatly.The theoretically computed results are in good agreement with the experimental observation.
FOKKER-PLANCK EQUATION IN THE APPLICATION OF FAST WAVE HEATING
Fokker-Planck方程在快波加热中的应用

ZHU XUE-GUANG,KUANG GUANG-LI,ZHAO YAN-PING,LI YOU-YI,XIE JI-KANG,
朱学
,,赵燕平,李有宜,谢纪康

物理学报 , 1998,
Abstract: The standard normal distribution for particles in tokamak geometry is usually assumed in fast wave heating.In fact,due to the quasi-linear diffusion effect,the parallel and vertical temperatures of the resonant particles are not equal to each other,so,this will bring some error.For this case,the Fokker-Planck equation is introduced in this paper,and iteration algorithm is adopted to solve the problem well.
起伏地表叠前逆时深度偏移与并行实现
王延,
石油地球物理勘探 , 2012,
Abstract: ?本文系统讨论了逆时偏移中常用的波动方程求解方法,并简述了其各自的特点和优势。文中提出用逆时偏移实现基于起伏地表的波动方程叠前深度偏移,理论模型数据的试算结果与单程波方程和kirchhoff积分方法结果进行对比,展示了逆时偏移的优越性。自行研发的基于cpu/gpu平台的并行软件,推动了逆时偏移算法实用化的运行,在应用中取得了良好效果。
mbh法计算气井平均地层压力
建超,史乃
天然气工业 , 1991,
Abstract: ?本文介绍了利用压力恢复曲线计算气井平均地层压力的mbh法.通过对威远气田42井次地层压力的计算,表明nbh法不仅适合于气井地层压力的计算而且是较为精确的方法.
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