Global Positioning System

Orlova, K., Shprits, Y., & Spasojevic, M. (2016). New global loss model of energetic and relativistic electrons based on Van Allen Probes measurements. Journal Of Geophysical Research: Space Physics. http://doi.org/10.1002/2015JA021878 (Original work published February 2016)
Morley, S., Sullivan, J., Henderson, M., Blake, B., & Baker, D. (2016). The Global Positioning System constellation as a space weather monitor: Comparison of electron measurements with Van Allen Probes data. Space Weather. http://doi.org/10.1002/2015SW001339 (Original work published February 2016)