钻杆内孔微波多径信道研究与测试
发布时间：2019-06-28 08:25
【摘要】：将钻杆内孔视为超长不规则有耗圆波导,采用多径传输理论建立信道模型,结合实验统计法,对信道特征及信号衰减机理进行了研究分析.分析结果表明,广泛应用于空气钻井领域的API 5″和5~(1/2)″钻杆,其内孔可以作为2.4GHz频段微波信道,且一根钻杆单元构成的微波信道基本符合超宽带信道标准.但钻杆接头段具有多个反射面,导致信道具有双簇多径信道的特性,双簇间较大的时延令信道均方时延扩展大幅增加.根据模型对比结果,多径衰落和时延是影响该信道传输质量的主要因素.
[Abstract]:The inner hole of the drill pipe is regarded as an ultra-long irregular lossy circular waveguide. The channel model is established by using the multi-path transmission theory. Combined with the experimental statistical method, the channel characteristics and signal attenuation mechanism are studied and analyzed. The analysis results show that the inner hole of API 5 "and 5 ~ (1 鈮，
本文编号：2507153
[Abstract]:The inner hole of the drill pipe is regarded as an ultra-long irregular lossy circular waveguide. The channel model is established by using the multi-path transmission theory. Combined with the experimental statistical method, the channel characteristics and signal attenuation mechanism are studied and analyzed. The analysis results show that the inner hole of API 5 "and 5 ~ (1 鈮，
本文编号：2507153
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