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GPS/MET, Global Positioning System/Meteorology

NSSDCA ID: 1995-017C-02

Mission Name: Microlab 1


The GPS/MET instrument consists of a GPS receiver that has been adoped for space operation. As a low-earth orbiter MET observes the GPS satellites setting behind the Earth's edge (limb) and the two L-band GPS signals can be used to determine the atmospheric temperature and the ionospheric electron content (along the signal path). The experiment is observing more than one hundred 60-to-100- second-long globally distributed occultations of GPS signals every day. Dual-frequency GPS occultations are extracted from these signals by the orbiting receiver and sent to a ground station where they are processed into different levels of data products. More information on the availability of the data products can be found at the GPS/MET home_page:

Alternate Names

  • Microlab1/GPS/MET,GlobalPositioningSystem/Meteorology


  • Space Physics: Ionospheric Studies

Additional Information

Questions and comments about this experiment can be directed to: Dr. Dieter K. Bilitza



NameRoleOriginal AffiliationE-mail
Mr. Mike ExnerExperiment Data ManagerUniversity Corporation for Atmospheric
Mr. Bill SchreinerExperiment ScientistUniversity Corporation for Atmospheric

Selected References

  • Melbourne, W., Sounding the Earth's atmosphere and ionosphere with GPS, EOS Trans., 76, No. 46, doi:10.1029/95EO00287, Nov. 1995.
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