Analysis and Studies of Radio Tomographic Data Taken at a Low Latitude Chain of Stations

层析成像技术，应用于电离层成像，提供了许多模拟研究，了解文物的性质，当重建是基于不完善的数据。科学家们还开发了利用辅助电离层信息来提高重建精度的技术。最后，验证测量增强了对这些层析成像技术的信心。然而，这些数据主要是在竞选模式下获得的；因此，它们不适合长期的行为研究，而这些研究需要提高对电离层天气的理解。一条被称为低纬度电离层层析成象网（LITN）的链覆盖了整个北赤道异常区。PI现在收集了一组LITN数据，突出地显示了赤道异常。这一特征每天都在变化，随着海拔高度向较低的地磁纬度移动，表现出典型的赤道电离层天气。通过喷泉效应，这种异常与发电机电场密切相关，因此PI也可以研究这种现象。总之，挖掘LITN数据库正在加强对赤道地区电离层天气的了解。

Tomographic techniques, applied to ionospheric imaging, have provided many simulation studies to learn the nature of artifacts when reconstructions are based on imperfect data. Scientists have also developed techniques to use subsidiary ionospheric information to increase the accuracy of reconstructions. Finally, validation measurements have enhanced confidence in these tomographic techniques. These data, though, have been obtained mainly in campaign mode; hence, they aren't suitable for long-term behavior studies, needed to improve understanding of ionospheric weather. One chain, known as the Low-latitude Ionospheric Tomography Network (LITN), covers the whole northern equatorial anomaly region. The PI now gleans a set of LITN data, showing prominently the equatorial anomaly. This feature, changing day by day, moves to a lower geomagnetic latitude with altitude, demonstrating typical equatorial ionospheric weather. The anomaly is tied intimately to the dynamo electric field through a fountain effect, so the PI can also study this phenomenon. In all, mining the LITN database is enhancing understanding of equatorial region ionospheric weather.