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《Power System Technology》 2010-06
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UHV Transmission Line-Caused Radio Interference in Non-Directional Beacon

LIU Xing-fa1,ZHANG Xiao-wu1,ZHANG Guang-zhou1,WU Xiong1,WAN Bao-quan1,YIN Hui2 (1.State Grid Electric Power Research Institute,Wuhan 430074,Hubei Province,China;2.School of Geodesy and Geomatics,Wuhan University,Wuhan 430072,Hubei Province,China)  
To analyze the 1 000 kV transmission line-caused radio interference in non-directional beacon,the flight test was carried out in UHVAC base of State Grid Co.The consecutive collection of flight data under the condition that the helicopter passed through UHV transmission line was implemented by airborne global positioning system (GPS) and ground-based GPS;the helicopter’s track is determined by precise point positioning technique and compared with theoretical flight path.Test results show that there is no distinct regularity between radio interference from UHV transmission line and the flight height of helicopter and there is also no distinct regularity between radio interference from UHV transmission line and the distance from the helicopter to UHV transmission line.
【Key Words】: UHV transmission line global positioning system(GPS) radio interference precise point positioning technology
【CateGory Index】: TN965
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