Radio-channel characterization of an underground mine at 2.4 GHz
Radio-channel characterization of an underground mine at 2.4 GHz
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DOI：
10.1109/twc.2005.853899
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发表时间：
2005-09
影响因子：
10.4
通讯作者：
C. Nerguizian;C. Despins;S. Affes;M. Djadel
中科院分区：
文献类型：
--
作者：
C. Nerguizian;C. Despins;S. Affes;M. Djadel
本文介绍了综合实验结果，从窄带和宽带无线电信道测量在一个地下矿山与狭窄的静脉在2.4 GHz。从连续波（CW）的测量数据，大规模的距离功率曲线和路径损耗指数的环境中确定。从宽带测量数据中提取其他相关参数，例如平均超额延迟、最大超额延迟、均方根（rms）延迟扩展和相干带宽。结果表明，传播行为，是特定的这些地下环境与粗糙的表面。均方根延迟扩展不像在光滑表面的环境中那样，与距离呈双斜率关系。此外，发现均方根延迟扩展对用户二维位置的依赖性非常显着。对于大多数位置，均方根延迟扩展值小于60 ns。
This paper presents comprehensive experimental results obtained from narrowband and wideband radio-channel measurements in an underground mine with narrow veins at 2.4 GHz. From continuous-wave (CW) measurement data, large-scale distance-power curves and path-loss exponents of the environment are determined. Other relevant parameters, such as the mean excess delay, the maximum excess delay, the root-mean-square (rms) delay spread, and the coherence bandwidth are extracted from the wideband-measurement data. Results show a propagation behavior that is specific for these underground environments with rough surfaces. The rms delay spread does not follow a dual-slope relation with respect to distance, as in environments with smooth surfaces. Moreover, the dependence of the rms delay spread on the bidimensional position of the user is found to be very significant. For the majority of locations, the rms delay-spread values are less than 60 ns.