GPS radio occultation

GPS radio occultation

Used for weather forecasting as well as climate change monitoring. A radio signal from a geostationary GPS satellite (GEO) is sent to a low-earth orbit (LEO) satellite. The changes detected due to the occultation (interference) of particles determine the properties of the atmosphere.
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With an office in Glasgow, Spire will now have access to a strong base of talented engineers who are capable of solving some of today's most complex challenges in order to develop the next generation of GPS Radio Occultation technology.
GPS radio occultation differs fundamentally from the passive radiance sounders in that its remote sensing physics is based in optical refraction rather than in radiative absorption and also because it is not subjected to bias correction.
GPS radio occultation reveals the signature of perturbed vertical diffusion physics while passive, bias-corrected remote sounders of upper tropospheric water vapor do not.
Thepault, 2006: Assimilation experiments with CHAMP GPS radio occultation measurements.
20) In addition, novel GPS radio occultation (GPS RO) techniques (21) have been able to achieve measurement resolution and accuracy comparable to those of ground-based techniques such as the MU radar and balloon observations (radiosonde).
32) Vertical wave number spectra can be analyzed using high resolution profiles from meteorological balloon (radiosonde) observations and high precision satellite data, such as GPS radio occultation.
Global distribution of the gravity wave activity using GPS radio occultation data
The company uses a method called GPS radio occultation that collects data on temperature, atmospheric pressure and humidity.
In this paper, a novel method to remotely sense the height of evaporation duct is proposed using ground-based GPS radio occultation signal power as the satellite rises or sets on the horizon.
Whereas GPS radio occultation measurements onboard a LEO satellite may provide up to about 200 vertical electron density profiles in velocity or anti-velocity direction near the orbit plane (e.
GPS radio occultation measurements of the ionosphere from CHAMP: Early results.
Measurements from the campaign were compared with dropsonde data, and the results showed for the first time that atmospheric data probed using GPS radio occultation can be measured with such airborne GPS technology: during the campaign, GISMOS increased the number of available atmospheric profiles of tropical storm evolution by more than 50%.