Global GNSS-RO Electron Density in the Lower Ionosphere. - Dong L. Wu; Daniel J. Emmons; Nimalan Swarnalingam (Remote. Sens., 2022)

Optimal Estimation Inversion of Ionospheric Electron Density from GNSS-POD Limb Measurements: Part I-Algorithm and Morphology. - Dong L. Wu; Nimalan Swarnalingam; Cornelius Csar Jude H. Salinas; Daniel J. Emmons; Tyler C. Summers; Robert Gardiner-Garden (Remote. Sens., 2023)

Optimal Estimation Inversion of Ionospheric Electron Density from GNSS-POD Limb Measurements: Part II-Validation and Comparison Using NmF2 and hmF2. - Nimalan Swarnalingam; Dong L. Wu; Daniel J. Emmons; Robert Gardiner-Garden (Remote. Sens., 2023)

Comparison of a Bottom-Up GNSS Radio Occultation Method to Measure D- and E-Region Electron Densities with Ionosondes and FIRI. - Dylan J. Shaver; Dong L. Wu; Nimalan Swarnalingam; Anthony L. Franz; Eugene V. Dao; Daniel J. Emmons (Remote. Sens., 2023)