Study on the strength loss of Multi-hop HF Radio Propagation

摘要：

　　The reflections of high frequency(HF)radio waves between ionosphere and earths surface make long-distance information transmission possible.In this paper,the propagation process of radio signals was analyzed and the ionosphere was simplified.Considering the strength loss of signals that occurs in the travelling process and at the reflection points,two pairs of differential equations and integral equations were established to simulate the strength variations of HF radio waves and noises.A different equation of SNR was also developed,which utilized the failure threshold of signal-noise-ratio(SNR)as a criterion to evaluate the effectiveness of signals.Meanwhile,the pace of SNR attenuation was simulated when reflections happens on calm ocean,turbulent ocean,smooth terrain and rugged terrain.

作者: Lingxiao Liu Tian Lu Mingxue Gong Wuyu Zhang

作者单位: School of Civil Engineering,Qinghai University,Xining Qinghai,810016,China

会议类型: 国际会议

会议名称: 2018年建筑、航空与环境工程国际学术论坛-物联网(IFCAE-IOT 2018)2018 International Forum on Construction, Aviation and Environmental Engineering-Internet of Things(IFCAE-IOT 2018)

会议地点: 广州

会议语种:英文

页码: 1-4

在线出版日期: 2018-05-11（万方平台首次上网日期，不代表论文的发表时间）