Citizen Scientists Conduct Distributed Doppler Measurement for Ionospheric Remote Sensing
Citizen Scientists Conduct Distributed Doppler Measurement for Ionospheric Remote Sensing
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DOI：
10.1109/lgrs.2021.3063361
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发表时间：
2022-01-01
影响因子：
4.8
通讯作者：
Kazdan, David
中科院分区：
文献类型：
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作者：
Collins, Kristina;Montare, Aidan;Kazdan, David
利用时间标准站作为无源雷达信标进行多普勒频移测量，作为估计虚拟电离层高度的一种手段已经得到了广泛的应用。2019年10月，在时站WWV成立100周年之际，利用该时站进行了一项分布式多普勒频移测量的社区科学实验。参与者被要求通过开源软件程序fldigi从WWV 5-MHz载波收集多普勒频移数据。这个实验获得了全国各地电台的参与，表现出相当大的志愿者兴趣：收集了45个WWV 5兆赫信标的录音。这项研究的新颖元素是在地球物理领域使用分布式低保真传感器，业余无线电社区的积极参与是通过廉价和现成的仪器实现的。在这封信中，我们提出了结果数据的初步相关性分析，并讨论了其对未来长期分布多普勒网络的影响。收集到的数据非常一致，如果把它们放在一起研究，就可以对区域趋势提供一些见解。尽管业余社区使用的设备种类繁多，但这种社区科学方法显示出解决地球空间系统中采样不足问题的希望。
Doppler shift measurement using time standard stations as passive radar beacons is well-established as a means of estimating virtual ionospheric height. A community science experiment in distributed Doppler shift measurement was conducted in October 2019 using the time station WWV, on the event of that station's centennial. Participants were asked to collect Doppler shift data from the WWV 5-MHz carrier via the open-source software program fldigi. This experiment garnered participation from stations across the country, demonstrating considerable volunteer interest: 45 recordings of WWV's 5-MHz beacon were collected. The novel element of this study is the use of distributed low-fidelity sensors in this geophysical domain, and the robust participation of the amateur radio community was enabled by inexpensive and readily available instrumentation. In this letter, we present an initial correlation analysis of the resultant data and discuss its implications for future long-term distributed Doppler networks. The data collected are in good agreement and, when examined together, offer some insights into regional trends. Despite the variety of equipment used by the amateur community, this community science approach shows promise for addressing the problem of undersampling in the geospace system.