• Born, M., E. Wolf, Principles of Optics6th ed., Pergamon, Tarrytown, N. Y., 1980.
  • Daniell, R. E., L. D. Brown, D. N. Anderson, M. W. Fox, P. H. Doherty, D. T. Decker, J. J. Sojka, R. W. Schunk, Parameterized ionospheric model: A global ionospheric parameterization based on first principles models, Radio Science, 305, 14991510, 1995.
  • Decker, D. T., D. N. Anderson, R. M. Campbell, P. H. Doherty, Simulations of GPS/MET ionospheric observations (abstract), Eos Trans. AGU, 7746, Fall Meet. Suppl., F142, 1996.
  • Fjeldbo, G. F., V. R. Eshleman, A. J. Kliore, The neutral atmosphere of Venus as studied with the Mariner V radio occultation experiments, Astron. J., 76, 123140, 1971.
  • Gorbunov, M. E., S. V. Sokolovsky, L. Bengtsson, Space refractive tomography of the atmosphere: Modeling of direct and inverse problemsRep. 210Max-Planck-Inst. für Meteorol., Hamburg, F. R GermanyAugust, 1996.
  • Gurvich, A. S., T. G. Krasil'nikova, Navigation satellites for radio sensing of the Earth's atmosphere, Sov. J. Remote Sensing, 7, 11241131, 1990.
  • Hajj, G. A., R. Ibanez-Meier, E. R. Kursinski, L. J. Romans, Imaging the ionosphere with the Global Positioning System, Int. J. Imaging Syst. Technol., 5, 174184, 1994.
  • Hajj, G. A., E. R. Kursinski, W. I. Bertiger, S. S. Leroy, J. T. Schofield, Sensing the atmosphere from a low-Earth orbiter tracking GPS: Early results and lessons from the GPS/MET experiment, Proceedings of ION-GPS 95, The 8th International Technical Meeting of The Satellite Division of The Institute of Navigation, 11671174, Alexandria, Va., 1995.
  • Hajj, G. A., L. Romans, W. Bertiger, R. Kursinski, T. Mannucci, Imaging the ionosphere with GPS/METURSI GPS/MET WorkshopTucson, Ariz.Feb. 21–24, 1996.
  • Høeg, P., A. Hauchecorne, G. Kirchengast, S. Syndergaard, B. Belloul, R. Leitinger, W. Rothleitner, Derivation of atmospheric properties using a radio occultation techniquesP. Høeg, S. Syndergaard, ESA/ESTEC Contr. Rep. 11024/94/NL/CN, DMI Sci. Rep. 95-4Danish Meteorol. Inst., Copenhagen, 1995.
  • Kursinski, E. R., et al., Initial results of radio occultation observations of Earth's atmosphere using the Global Positioning System, Science, 271, 11071110, 1996.
  • Kursinski, E. R., G. A. Hajj, J. T. Schofield, R. Linfield, K. R. Hardy, Observing Earth's atmosphere with radio occultation measurements using the Global Positioning System, J. Geophys. Res., 102D19, 23,42923,465, 1997.
  • Leitinger, R., H.-P. Ladreiter, G. Kirchengast, Ionosphere tomography with data from satellite reception of Global Navigation Satellite System signals and ground reception of Navy Nav Satellite System signals, Radio Sci., 324, 16571669, 1997.
  • Leroy, S., The Measurement of geopotential heights by GPS radio occultation, J. Geophys. Res., 102D6, 69716986, 1997.
  • Mannucci, A. J., B. D. Wilson, D. N. Yuan, C. M. Ho, U. J. Lindqwister, T. F. Runge, A global mapping technique for GPS-derived ionospheric total electron content measurements, Radio Sci., 1997.
  • Meehan, T. K., et al., The TurboRogue GPS receiver6th International Geodetic Symposium on Satellite PositioningDef. Mapping AgencyColumbus, OhioMarch 17–20, 1992.
  • Melbourne, W. G., E. S. Davis, C. B. Duncan, G. A. Hajj, K. R. Hardy, E. R. Kursinski, T. K. Meehan, L. E. Young, andT. P. Yunck, The application of spaceborne GPS to atmospheric limb sounding and global change monitoring, JPL Publ., 94-18,April1994.
  • Tricomi, F. G., Integral Equations, Dover, Mineola, N. Y., 1985.
  • Tyler, G. L., Radio propagation experiments in the outer solar system with Voyager, Proc. IEEE, 75, 14041431, 1987.
  • Ware, R., et al., GPS sounding of the atmosphere from low earth orbit: Preliminary results, Bull. Am. Meteorol. Soc., 771, 1940, 1996.
  • Yunck, T. P., G. F. Lindal, C. H. Liu, The role of GPS in precise earth observationIEEE Position, Location and Navigation SymposiumOrlando, Fl.Nov. 29-Dec. 2, 1988.