Automated Ionospheric Scattering Layer Hypothesis Generation for Detected and Classified Auroral Global Positioning System Scintillation Events

Automated Ionospheric Scattering Layer Hypothesis Generation for Detected and Classified Auroral Global Positioning System Scintillation Events
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针对检测和分类的极光全球定位系统闪烁事件自动生成电离层散射层假设

DOI:
10.1029/2018rs006779
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发表时间:
2020
期刊:
影响因子:
1.6
通讯作者:
Datta‐Barua, Seebany
Datta‐Barua, Seebany
中科院分区:
计算机科学4区
文献类型:
--
作者:
Sreenivash, Vaishnavi;Su, Yang;Datta‐Barua, Seebany

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我们描述了一种方法来检测和分类全球定位系统(GPS)闪烁,然后假设一个可能的电离层散射的信号。其目的是定期查明值得关注的事件,以便在今后的工作中进行详细调查。闪烁类型包括幅度、相位或幅度和相位两者。闪烁事件是闪烁指数在观察单个卫星的大多数紧密间隔的接收器上保持在阈值以上的事件。事件按信号频率和闪烁类型分类。然后使用独立的数据源假设事件是由于E或F层引起的。来自阿拉斯加扑克平原研究范围的闪烁极光GPS阵列的数据用于分析2014年和2015年的L1和L2 C频率。假设与每个闪烁事件相关的不规则层是由于电离层E层(150公里以下)或F层(195公里以上)中的活动,使用同位扑克平板非相干散射雷达电子密度测量。还记录了过渡层(150-195公里)中的事件和不确定的结果。我们发现,几乎所有的4,000多个事件是相位振荡。大多数的事件被假设为发生时,峰值密度是在E层的高度。这表明,在极光纬度,与E层有关的闪烁可能很常见,全球定位系统接收器对极光纬度和F层高度上发生的不规则现象很敏感。
We describe a method to detect and classify global positioning system (GPS) scintillation, and then hypothesize a possible ionospheric layer scattering the signal. The objective is to routinely identify events of interest to investigate in detail in future work. Scintillation types include amplitude, phase, or both amplitude and phase. A scintillation event is one for which a scintillation index remains above a threshold across a majority of closely spaced receivers viewing a single satellite. Events are categorized by signal frequency and scintillation type. An event is then hypothesized to be due to the E or F layer using an independent data source. Data from the scintillation auroral GPS array located in Poker Flat Research Range, Alaska, are used to analyze L1 and L2C frequencies in 2014 and 2015. The irregularity layer associated with each scintillation event is hypothesized to be due to the activity in the E layer of the ionosphere (below 150 km) or in the F layer (above 195 km) using collocated Poker Flat Incoherent Scatter Radar electron density measurements. Events in a transition layer (150–195 km) and inconclusive results are also recorded. We find that nearly all of the over 4,000 events are phase scintillations. The majority of the events are hypothesized to occur when the peak density is at E-layer altitudes. This indicates that E-layer-related scintillation may be quite common at auroral latitudes and that GPS receivers are sensitive to the irregularities occurring both there and at F layer altitudes.
DOI: --
发表时间: 2015
期刊:
影响因子: --
作者:
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通讯作者: K. Deshpande
DOI: 10.1002/2015gl063556
发表时间: 2015-05-28
影响因子: 5.2
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发表时间: 2019-02
期刊: Journal of Geophysical Research: Space Physics
影响因子: --
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DOI: --
发表时间: 2016
期刊:
影响因子: --
作者:
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