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Measuring the Electron Density Roughness of the D‐Region Ionosphere
Journal of Geophysical Research: Space Physics ( IF 2.8 ) Pub Date : 2020-09-02 , DOI: 10.1029/2020ja028111
Marc A. Higginson‐Rollins 1 , Morris B. Cohen 1
Affiliation  

We present a method of characterizing the horizontal and vertical electron density roughness of the D‐region ionosphere using Nationwide Differential Global Position System (NDGPS) transmitters as low‐frequency (LF; 30–300 kHz) and medium‐frequency (MF; 300–3,000 kHz) signals of opportunity. The horizontal roughness is characterized using an amplitude cross‐correlation method, which yields the correlation length scale metric. The vertical roughness is characterized using a differential phase height, which is needed to mitigate the effects of transmitter phase instability. The ranges and typical values of roughness metrics are investigated using data from several field campaign measurements. Finally, the roughness metrics for an NDGPS transmitter and very low frequency (VLF) transmitter are compared. It is found that the roughness detected by the VLF transmitter is significantly smoother and demonstrates the utility of this method to complement traditional VLF measurements.

中文翻译:

测量D区电离层的电子密度粗糙度

我们介绍了一种使用全国差分全球定位系统(NDGPS)发射机将低频(LF; 30–300 kHz)和中频(MF; 300– 3,000 kHz)的机会信号。水平粗糙度使用幅度互相关方法进行表征,从而得出相关长度比例度量。垂直粗糙度使用差分相位高度来表征,这是减轻发射机相位不稳定性影响所必需的。粗糙度度量的范围和典型值是使用来自几次野战测量的数据进行调查的。最后,比较了NDGPS发射机和甚低频(VLF)发射机的粗糙度量度。
更新日期:2020-10-12
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