ID 原文 译文
13304 首先,对电机内部磁场和旋转磁偶极子的关系进行阐述,利用麦克斯韦方程组,得到旋转磁偶极子的电磁场分布。 Firstly, this paper describes the relationship between the magnetic field of the motor and the rotating magnetic dipole, and the electromagnetic field distribution of the rotating magnetic dipole is obtained by Maxwell's equations.
13305 其次,通过电磁仿真软件验证旋转磁偶极子的近场分布特性和远场辐射特性。 Secondly, its near field and far field characteristics are proved by electromagnetic simulation.
13306 最后,通过实验对电机近场的磁场分布进行验证。 Finally, the electromagnetic field distribution of the motor is verified through experiments.
13307 仿真和实测结果表明,三相感应电机具有超低频天线的辐射特性。 The results show that the three-phase induction motor has the radiation characteristics of the low frequency antenna.
13308 在解读、剖析ITU-R P.1546方法的基础上,通过对比北京周边平原地区和贵州喀斯特山区的测试结果和预测结果,分析了该方法在两类中国陆地典型区域的适用性。 Based on the analysis of the ITU-R P.1546 recommendation, this paper compares the prediction results with the test results in the surrounding plain area of Beijing and Karst mountain area in Guizhou, and we analyzed the applicability of this method in two typical terrestrial areas of China.
13309 分析结果表明:1)在3 s和30 s高程精度下,平原地区均表现出较好的适应性,但提升高程精度可一定程度上减小预测误差。 The results show that:(1) The terrain shows good adaptability at both 3 s and 30 s accuracy, and increasing the elevation accuracy can reduce the prediction error.
13310 2)山区在3 s高程精度下具有良好适应性,粗粒度的高程数据将对发射天线等效高度及场强插值、地形余隙角修正值产生较大影响,其中3 s与30 s高程精度下的地形余隙角修正值的均值相差30.85 dB。 (2) The prediction result of remote mountainous regions is only good at 3 s terrain accuracy. Coarse-grained elevation data can have a significant impact on the equivalent height of transmit antenna, as well as the field strength interpolation and the terrain clearance angle correction, and the average value of terrain clearance angle correction under 3 s and 30 s Terrain difference is 30.85 dB.
13311 研究结果可为ITU-R建议所提供传播预测方法的区域性应用及本地化研究等方面提供参考依据。 The research results are of significance to for the regional application and localization research of the propagation prediction methods provided by ITU-R Recommendations.
13312 针对等效原理算法(equivalent principle algorithm, EPA)中的单位算子采用传统数值离散方式导致精度差的问题,提出了一种混合的数值离散方式来提高计算精度。 For the poor precision problem of identity operator using conventional numerical discretization in equivalent principle algorithm(EPA), a mixed discretization scheme is proposed to improve the accuracy in this paper.
13313 该混合离散方式将等效面上的电流用传统RWG(Rao-Wilton-Glisson)基函数展开,磁流用BC(Buffa-Christiansen)基函数展开,再分别用和作为测试函数对电流和磁流进行测试,即在单位算子的对偶空间里对其进行测试。 In the mixed discretization scheme, the electric currents on equivalence surfaces are expanded by Rao-Wilton-Glisson(RWG) basis functions and magnetic currents are expanded by Buffa-Christiansen(BC) basis functions. Then the testing functions are and respectively, which means that identity operators are tested on the dual of their range.