城市小区电磁信号分布的计算预测
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- 英文论文题名：Calculation and Prediction of Urban District Electromagnetic Signals Distribution
- 论文作者：代超超 ; 张齐 ; 王永乐 ; 张玉 ; 赵勋旺
- 英文论文作者：DAI Chao-chao ; ZHANG Qi ; WANG Yong-le ; ZHANG Yu ; ZHAO Xun-wang ; Key Lab.of Antennas and Microwave Technology ; Xidian Univ.
- 年：2016
- 作者机构：西安电子科技大学天线与微波技术重点实验室;
- 论文关键词：MOM ; UTD ; 有耗介质 ; 城市小区 ; 电磁分布
- 英文论文关键词：MOM ; UTD ; lossy dielectric ; urban district ; electromagnetic distribution
- 会议召开时间：2016-08-17
- 会议录名称：2016年全国军事微波、太赫兹、电磁兼容技术学术会议论文集
- 语种：中文
- 分类号：O441
- 学会代码：WBXB
- 会议名称：2016年全国军事微波、太赫兹、电磁兼容技术学术会议
- 会议地点：中国陕西西安
- 主办单位：中国电子学会微波分会、天线与微波技术重点实验室
- 学会名称：《微波学报》编辑部
- 页数：4
- 文件大小：646k
- 原文格式：D
- 会议级别：全国
摘要
为了预测计算典型城市住宅小区的电磁分布,采用有耗介质劈的UTD算法结合MOM来实现;在UTD算法中,天线被等效为一个点源处理,考虑到大范围区域的UTD射线寻迹十分耗时,所以,以天线的几何中心近似为天线的相位中心作为UTD的源进行射线寻迹,反射点和绕射点处的入射场直接由MOM计算天线近场点电磁场值得到。根据有耗媒质的菲涅尔反射系数以及本文发展采用的有耗介质劈的绕射系数求解公式,从而求得反射场和绕射场;再进行场叠加,进而可求解出任意场点的场值;最后根据此方法,计算了某高校住宅小区的电磁分布。
The electromagnetic signals distribution of typical urban residential area is calculated by using the method of lossy dielectric wedge UTD combining MOM; In UTD algorithm, the antenna is equivalent to a point source, taking into account the large areas UTD ray tracing is very time-consuming, so the geometric center of the antenna in place of the antenna phase center as a source of UTD ray tracing, the incident field at reflection and diffraction point is calculated by MOM. According to lossy medium Fresnel reflection coefficient and lossy dielectric wedge diffraction coefficient introduced by this paper, the reflected field and diffracted field can be solved. Then fields overlap, and the electric field at any point can be calculated; Finally, using this method to calculate the electromagnetic distribution of a university residential district.
The electromagnetic signals distribution of typical urban residential area is calculated by using the method of lossy dielectric wedge UTD combining MOM; In UTD algorithm, the antenna is equivalent to a point source, taking into account the large areas UTD ray tracing is very time-consuming, so the geometric center of the antenna in place of the antenna phase center as a source of UTD ray tracing, the incident field at reflection and diffraction point is calculated by MOM. According to lossy medium Fresnel reflection coefficient and lossy dielectric wedge diffraction coefficient introduced by this paper, the reflected field and diffracted field can be solved. Then fields overlap, and the electric field at any point can be calculated; Finally, using this method to calculate the electromagnetic distribution of a university residential district.
引文
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[2]王少尉,朱秋萍,田茂.城市微蜂窝的快捷精确传播预测方法.电波科学学报.2006.21(1):112-116.
[3]刘芫健,马雪,施秦健.室外微蜂窝小区3.5GHz电波传播特性仿真和分析.微波学报.2015,31(3):11-16.
[4]Orlando Landron,Martin J.Feuerstein.AComparison of Theoretical and Empirical Reflection Coefficients for Typical Exterior Wall Surfaces in a Mobile Radio Environment.IEEE Transactions on Antennas and Propagation,1996,44(3):341-351.
[5]R.G.Kouyoumjian,P.Pathak.A uniform geometrical theory of diffraction for an edge in a perfectly conducting surface[J],PROCEE.OFThe IEEE,1974.62(11):1448-1461.
[6]D N.Schettino,F J.S.Moreira,Novel UTDCoefficients for Lossy Conducting Wedges[J],IMOC 2007,270-274.
[7]Peter D.Holm.A New Heuristic UTD Diffraction Coefficient for Nonperfectly Conducting Wedges[J].IEEE Transactions on Antennas and Propagation,2000.48(8):1211-1219.
[8]哈林登.计算电磁场的矩量法[M].北京:国防工业出版社,1981:78-79.
[9]王萌,梁昌洪,张玉.UTD结合MM计算复杂环境中天线的方向图[J].电波科学学报,2007,22(3):508-512.
[10]Chan-Keong Chio,Sio-Weng Ting,Xunwang Zhao.Prediction Model for Radiation from BaseStation Antennas Using Electromagnetic Simulation[A].APMC2012.Kaohsiung:IEEE,2012:1082-1084.
[2]王少尉,朱秋萍,田茂.城市微蜂窝的快捷精确传播预测方法.电波科学学报.2006.21(1):112-116.
[3]刘芫健,马雪,施秦健.室外微蜂窝小区3.5GHz电波传播特性仿真和分析.微波学报.2015,31(3):11-16.
[4]Orlando Landron,Martin J.Feuerstein.AComparison of Theoretical and Empirical Reflection Coefficients for Typical Exterior Wall Surfaces in a Mobile Radio Environment.IEEE Transactions on Antennas and Propagation,1996,44(3):341-351.
[5]R.G.Kouyoumjian,P.Pathak.A uniform geometrical theory of diffraction for an edge in a perfectly conducting surface[J],PROCEE.OFThe IEEE,1974.62(11):1448-1461.
[6]D N.Schettino,F J.S.Moreira,Novel UTDCoefficients for Lossy Conducting Wedges[J],IMOC 2007,270-274.
[7]Peter D.Holm.A New Heuristic UTD Diffraction Coefficient for Nonperfectly Conducting Wedges[J].IEEE Transactions on Antennas and Propagation,2000.48(8):1211-1219.
[8]哈林登.计算电磁场的矩量法[M].北京:国防工业出版社,1981:78-79.
[9]王萌,梁昌洪,张玉.UTD结合MM计算复杂环境中天线的方向图[J].电波科学学报,2007,22(3):508-512.
[10]Chan-Keong Chio,Sio-Weng Ting,Xunwang Zhao.Prediction Model for Radiation from BaseStation Antennas Using Electromagnetic Simulation[A].APMC2012.Kaohsiung:IEEE,2012:1082-1084.