GNSS-RO/R Instrument

Measurements and Applications

GNSS-RO/R provides GNSS Radio Occultation (RO), Reflectometry (R) and Precise Orbit Determination (POD) data for research on the sea-air interaction, the measurement of the soil properties and the detection of the icebergs, the prediction of the typhoon’s strength and path, the Earth's gravitational field, and the interferometric SAR baseline.

Instrument Summary

Full Name
GNSS Radio Occultation and Reflectometry (and POD) receiver
Status
Being developed
Instrument Agencies
TASA, ITRI, Han Yu RF-Technology Inc.
Maturity
Medium Heritage
Instrument Type
Atmospheric temperature and humidity sounders
Geometry
Nadir-viewing
Instrument Technology
GNSS radio-occultation receiver
Sampling
Other
Data Access
Data Format

Performance Summary

Resolution
RO < 40 m (altitude), R > 25 x 25 km^2
[Best Resolution: 20m]
Swath
Atmospheric RO: altitude of 2-60 km
[Max Swath: 60 km]
Accuracy
Waveband
L-band: L1, L2, L5
L-Band (2 - 1 GHz)

Instrument Missions

FORMOSAT-9A - FORMOSAT-9A (2028 - 2033)
FORMOSAT-9B - FORMOSAT-9B (2030 - 2035)

Instrument Measurements

CategoryParameter
Atmospheric Humidity FieldsAtmospheric specific humidity (LT, HT, LS, HS&M, TC)
Atmospheric Temperature FieldsAtmospheric temperature (LT, HT, LS, HS&M, TC)
Atmospheric WindsWind speed over land surface (horizontal)
Gravity, Magnetic and Geodynamic measurementsTotal electron content (TEC)
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