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Segmentation of the communication tower and its accessory equipment based on geometrical shape context from 3D point cloud 被引量:1
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作者 Jingru Wang Cheng Wang +3 位作者 Xiaohuan Xi Meng Du Pu Wang Sheng Nie 《International Journal of Digital Earth》 SCIE EI 2022年第1期1547-1566,共20页
Communication tower(CT)and its accessory equipment(AE)such as radio frequency equipment(RFE)and antenna,are essential in providing highspeed and stable mobile network services.It is necessary to routinely monitor the ... Communication tower(CT)and its accessory equipment(AE)such as radio frequency equipment(RFE)and antenna,are essential in providing highspeed and stable mobile network services.It is necessary to routinely monitor the security and stability of CT and AE for seamless communication.There is limited research on fine segmentation of communication base station objects.This paper proposes a method for accurately segmenting the point cloud of the CT and AE from Terrestrial Laser Scanning(TLS)data.At first,the CT point cloud is accurately segmented based on region growing and Random Sample Consensus(RANSAC).Then,the point cloud of pole-shaped apart is extended to a certain distance to obtain the buffer point cloud containing AE.Normal Differential(ND)clustering is employed to obtain several groups of clusters containing planes,and calculate each plane's filling rate and size.Finally,the cluster type(such as antenna,RFE,or other)is distinguished.The experimental results demonstrate that the point-based average F1-score of CTs is 98.70%,the point-based and object-based average F1-scores of antennas are 96.09%and 97.93%,and the corresponding values for the RFE are 89.89%and 90.00%,respectively,indicating the optimal performance of the proposed method. 展开更多
关键词 communication tower(CT) radio frequency equipment(RFE) ANTENNA SEGMENTATION point cloud
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Electromagnetic Environment Impact of Mobile Communication Iron Tower on Adjacent Building and Its Countermeasures
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作者 Zheng Bing Wang Xiao 《Meteorological and Environmental Research》 CAS 2015年第4期29-32,共4页
For several lightning-strike disasters related to base station iron tower of mobile communication carrier operator, disaster-inducing factors were analyzed. The reason was as below: after lightning receptor of base s... For several lightning-strike disasters related to base station iron tower of mobile communication carrier operator, disaster-inducing factors were analyzed. The reason was as below: after lightning receptor of base station iron tower of mobile communication carder operator was struck by lightning, electromagnetic radiation was generated in the process lightning current leaking into the ground. In addition, it was lightning scattered- strike phenomenon induced by overhead lightning rod, that is, ground lightning falling density around overhead lightning rod was larger than mean at the site. Finally, some improvement measures were put forward. 展开更多
关键词 Base station iron tower of mobile communication Electromagnetic radiation Lightning scattered strike COUNTERMEASURES China
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