CEOS Instrument: Global Positioning Satellite Occultation Experiment (GOX)




Instrument:GOX
Agencies: NASA [Primary]
 NSPO
 JPL
Missions: COSMIC-1/FORMOSAT-3 FM1
 COSMIC-2/FORMOSAT-3 FM2
 COSMIC-3/FORMOSAT-3 FM3
 COSMIC-4/FORMOSAT-3 FM4
 COSMIC-5/FORMOSAT-3 FM5
 COSMIC-6/FORMOSAT-3 FM6
Status:Operational
Type:GNSS radio-occultation receiver
Description:Each instrument equipped with 4 GPS antennas to receive the L1 and L2 radio wave signals transmitted from the 24 US GPS satellites. Based on the signal transmission delay caused by the electric density, temperature, pressure, and water content in the ionosphere and atmosphere, information about ionosphere and atmosphere can be derived.
Spatial Resolution: Vertical: 0.3 - 1.5 m; Horizontal: 300 - 600 km
Swath Width: N/A
Wavebands: L1/L2
Technology: GNSS radio-occultation receiver
Description: GNSS receiver equipped with directional antennas to receive the signal from one of the GNSS satellites during occultation, and measure the phase, thus the bending angle and the refractivity index profile. Simultaneously, a companion GNSS receiver provides precision positioning. The refractivity index is associated to temperature, humidity and density. The vertical resolution of the product can be as good as 0.5 m, the horizontal resolution is conditioned by the limb geometry (~ 300 km). Applicable only in LEO.

Measurement List:

(select measurement name to view details)



CEOS Systems Engineering Office (SEO)

CEOS Data Base Version: 17 - Created: 2012-01-18