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首页> 外文会议>International Technical Meeting of The Institute of Navigation >Nighttime Medium-Scale Traveling Ionospheric Disturbance (MSTID) in GPS TEC Measurements
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Nighttime Medium-Scale Traveling Ionospheric Disturbance (MSTID) in GPS TEC Measurements

机译：GPS TEC测量中的夜间中型行驶电离层扰动（MSTID）

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We report observations of nighttime Medium-Scale Traveling Ionospheric Disturbances (MSTIDs) in Total Electron Content (TEC) measurements from ASTRA's CASES GPS receivers in Boulder, CO. CASES stands for Connected Autonomous Space Environment Sensor and is being produced by ASTRA as a low-cost, stand-alone, and autonomous dual frequency GPS space-weather monitoring station capable of providing fully processed outputs such as scintillation severity indicators S_4, τ_o, σ_Φ, the Scintillation Power Ration (SPR), and TEC with a relative accuracy of a few 0.01 TECU. MSTIDs are perturbations in ionospheric electron density caused by gravity waves travelling through the thermosphere from their source region, which is generally in the lower atmosphere. General characteristic of MSTIDs include horizontal velocities of 100-300 m/s, horizontal wavelengths of several hundred km, and perturbation periods of 10-30 minutes. In this paper, we present observations of MSTIDs in TEC measurements from multiple CASES sites in Colorado on July 27, 2012. These observations of MSTIDs are corroborated by TEC measurements from multiple Continuously Operating Reference Station (CORS) GPS sites in Colorado. The observed MSTID signature in TEC consists of a perturbation of ionospheric TEC of ～1 TECU corresponding to ～54 ns (16.2 cm) delay at the GPS L1 signal with a wave period of 20-40 minutes. This paper will describe the propagation characteristics of the observed MSTID and its spatial morphology as observed in TEC measurements from Colorado, and from distributed GPS receivers across the US.
机译：我们报告了Astra病例中的电子含量（TEC）测量的夜间中型行驶电离层扰动（MSTID）的观察到博尔德尔的GPS接收器，CO。案例代表连接的自主空间环境传感器，是由Astra生产的，作为低能够提供完全处理的输出的成本，独立和自主双频GPS空天天气监测站，例如闪烁严重性指示器S_4，τ_o，σ_φ，闪烁功率对（SPR）和TEC，具有相对精度的闪烁功率0.01 tecu。 Mstids是由通过从其源区传播的重力波引起的电离层电子密度的扰动，这通常在较低的大气中。 MSTID的一般特征包括100-300米/秒，水平波长的水平速度，数百米的水平波长，扰动期10-30分钟。在本文中，我们在2012年7月27日展示了来自科罗拉多州的多案点的TEC测量中的MSTID。通过来自科罗拉多州的多个连续操作参考站（CORS）GPS位点的TEC测量来证实了MSTID的观察结果。 TEC中观察到的MSTID签名包括对应于约54ns（16.2cm）延迟的电离层TEC的扰动，在GPS L1信号下，波浪周期为20-40分钟。本文将描述观察到的MSTID的传播特性及其在科罗拉多州的TEC测量中观察到的空间形态，以及来自美国的分布式GPS接收器。

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