矿用天线在矩形巷道中应用的最佳波束指标
煤矿井巷中,如果天线的波束过宽,则难以有效抑制多径衰落、增大覆盖范围;反之,如果波束过窄,则容易使巷道的边缘区域得不到有效覆盖。利用多波模波导理论,讨论得出理想点源在巷道中的辐射场分布特性是制定矿用天线波束指标的理论依据。在此基础上,推导了井下理想点源的方向函数和半功率波瓣宽度。随后,统计计算结合相关仿真,讨论了巷道波导结构、介质壁电参数、载波频率和电磁波传播距离的影响。根据分析所得,结合相关推导与比较,给出了矿用天线的最佳波束指标：为明显改善巷道内的无线覆盖效果,矿用天线应辐射形状较扁的均值为π/2的Gaussian波束;且天线的半功率波瓣宽度至少要窄于理想点源辐射场在巷道第I,II传播区分...
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| Published in | 煤炭学报 Vol. 42; no. 10; pp. 2776 - 2782 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
中国矿业大学计算机科学与技术学院,江苏徐州221008
2017
中国矿业大学物联网(感知矿山)研究中心矿山互联网应用技术国家地方联合工程实验室,江苏徐州221008 中国矿业大学信息与控制工程学院,江苏徐州221008%中国矿业大学信息与控制工程学院,江苏徐州,221008%中国矿业大学物联网(感知矿山)研究中心矿山互联网应用技术国家地方联合工程实验室,江苏徐州221008 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 0253-9993 |
| DOI | 10.13225/j.cnki.jccs.2017.0355 |
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| Abstract | 煤矿井巷中,如果天线的波束过宽,则难以有效抑制多径衰落、增大覆盖范围;反之,如果波束过窄,则容易使巷道的边缘区域得不到有效覆盖。利用多波模波导理论,讨论得出理想点源在巷道中的辐射场分布特性是制定矿用天线波束指标的理论依据。在此基础上,推导了井下理想点源的方向函数和半功率波瓣宽度。随后,统计计算结合相关仿真,讨论了巷道波导结构、介质壁电参数、载波频率和电磁波传播距离的影响。根据分析所得,结合相关推导与比较,给出了矿用天线的最佳波束指标：为明显改善巷道内的无线覆盖效果,矿用天线应辐射形状较扁的均值为π/2的Gaussian波束;且天线的半功率波瓣宽度至少要窄于理想点源辐射场在巷道第I,II传播区分界点处的波瓣宽度。 |
|---|---|
| AbstractList | 煤矿井巷中,如果天线的波束过宽,则难以有效抑制多径衰落、增大覆盖范围;反之,如果波束过窄,则容易使巷道的边缘区域得不到有效覆盖。利用多波模波导理论,讨论得出理想点源在巷道中的辐射场分布特性是制定矿用天线波束指标的理论依据。在此基础上,推导了井下理想点源的方向函数和半功率波瓣宽度。随后,统计计算结合相关仿真,讨论了巷道波导结构、介质壁电参数、载波频率和电磁波传播距离的影响。根据分析所得,结合相关推导与比较,给出了矿用天线的最佳波束指标：为明显改善巷道内的无线覆盖效果,矿用天线应辐射形状较扁的均值为π/2的Gaussian波束;且天线的半功率波瓣宽度至少要窄于理想点源辐射场在巷道第I,II传播区分界点处的波瓣宽度。 TD655%TN92; 煤矿井巷中,如果天线的波束过宽,则难以有效抑制多径衰落、增大覆盖范围;反之,如果波束过窄,则容易使巷道的边缘区域得不到有效覆盖.利用多波模波导理论,讨论得出理想点源在巷道中的辐射场分布特性是制定矿用天线波束指标的理论依据.在此基础上,推导了井下理想点源的方向函数和半功率波瓣宽度.随后,统计计算结合相关仿真,讨论了巷道波导结构、介质壁电参数、载波频率和电磁波传播距离的影响.根据分析所得,结合相关推导与比较,给出了矿用天线的最佳波束指标:为明显改善巷道内的无线覆盖效果,矿用天线应辐射形状较扁的均值为π/2的Gaussian波束;且天线的半功率波瓣宽度至少要窄于理想点源辐射场在巷道第Ⅰ,Ⅱ传播区分界点处的波瓣宽度. |
| Abstract_FL | In a coal mine tunnel,if the antenna beam is too wide,it is difficult to effectively suppress the multi-path fading and to increase the coverage area.On the contrary,if the antenna beam is too narrow,the edge areas of the tunnel cannot be well covered.Based on the theory of multimode waveguide,it is discussed and concluded that the radiation characteristics of the ideal point source in the tunnel is the theoretical basis for the formulation of mine antenna beam index.Then the direction function and the half power beam width of the ideal point source in the underground roadway are derived.On this basis,and by the statistical calculations and simulations,the influences of the tunnel waveguide structure,the dielectric parameters of the tunnel walls,the carrier frequency and the propagation distance are discussed.According to the analysis,and combining with the mathematical derivation and comparison,the optimum beam index of the mine antenna is given.The results show that in order to improve the wireless coverage significantly,the mine antenna should radiate fiat π/2-mean Gaussian beam.Meanwhile,the half power beam width must be at least narrower than that of the ideal point source when its radiated fields propagate to the break point of section Ⅰ and Ⅱ in the tunnel. |
| Author | 霍羽;郑红党;胡延军;张国鹏 |
| AuthorAffiliation | 中国矿业大学物联网（感知矿山）研究中心矿山互联网应用技术国家地方联合工程实验室,江苏徐州221008;中国矿业大学信息与控制工程学院,江苏徐州221008;中国矿业大学计算机科学与技术学院,江苏徐州221008 |
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| Author_FL | ZHENG Hongdang ZHANG Guopeng HU Yanjun HUO Yu |
| Author_FL_xml | – sequence: 1 fullname: HUO Yu – sequence: 2 fullname: ZHENG Hongdang – sequence: 3 fullname: HU Yanjun – sequence: 4 fullname: ZHANG Guopeng |
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| DOI | 10.13225/j.cnki.jccs.2017.0355 |
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| Keywords | antenna 波束指标 underground tunnel 无线通信 井下巷道 天线 beam index wireless communication |
| Language | Chinese |
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| Notes | HUO Yu1,2 ,ZHENG Hongdang2, HU Yanjun1,2 ,ZHANG Guopeng1,3 （1. IOT Perception Mine Research Center, China University of Mining and Technology, Xuzhou 221008, China; 2. School of Information and Control Engineering, China University of Mining and Technology ,Xuzhou 221008, China ; 3. School of Computer Science and Technology, China University of Mining and Technology ,Xuzhou 221008, China） wireless communication ; underground tunnel ; antenna ; beam index 11-2190/TD In a coal mine tunnel,if the antenna beam is too wide,it is difficult to effectively suppress the multi-path fading and to increase the coverage area. On the contrary,if the antenna beam is too narrow,the edge areas of the tunnel cannot be well covered. Based on the theory of multimode waveguide,it is discussed and concluded that the radiation characteristics of the ideal point source in the tunnel is the theoretical basis for the formulation of mine antenna beam index. Then the direction function and the half power beam width of the ideal point sourc |
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| PublicationTitle | 煤炭学报 |
| PublicationTitleAlternate | Journal of China Coal Society |
| PublicationTitle_FL | Journal of China Coal Society |
| PublicationYear | 2017 |
| Publisher | 中国矿业大学计算机科学与技术学院,江苏徐州221008 中国矿业大学物联网(感知矿山)研究中心矿山互联网应用技术国家地方联合工程实验室,江苏徐州221008 中国矿业大学信息与控制工程学院,江苏徐州221008%中国矿业大学信息与控制工程学院,江苏徐州,221008%中国矿业大学物联网(感知矿山)研究中心矿山互联网应用技术国家地方联合工程实验室,江苏徐州221008 |
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| Snippet | 煤矿井巷中,如果天线的波束过宽,则难以有效抑制多径衰落、增大覆盖范围;反之,如果波束过窄,则容易使巷道的边缘区域得不到有效覆盖。利用多波模波导理论,讨论得出理想点源在... TD655%TN92; 煤矿井巷中,如果天线的波束过宽,则难以有效抑制多径衰落、增大覆盖范围;反之,如果波束过窄,则容易使巷道的边缘区域得不到有效覆盖.利用多波模波导理论,讨论得... |
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| SubjectTerms | 井下巷道 天线 无线通信 波束指标 |
| Title | 矿用天线在矩形巷道中应用的最佳波束指标 |
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