EstimatingEregion density profiles from radio occultation measurements assisted by IDA4D
نویسندگان
چکیده
منابع مشابه
Atmospiieric Profiles from Radio Occultation Measurements of Gps Satellites
Atmospheric profiles can be retrieved with techniques utilizing measurements of the propagation delay of signals from Global Positioning System (GPS) satellites observed by one or more receivers in low earth orbit. The. observations are made in a limb-sounding geometry when the radio path between the transmitter and receiver passes through the atmosphere. The various componen~s of the microwave...
متن کاملAnalysis of Gravity Waves from Radio Occultation Measurements
In the height range 10-30 km atmospheric gravity waves lead to periodic perturbations of the background temperature field in the order of 2-3 K, which can be resolved in temperature profiles derived from radio occultation measurements. Due to the spherical symmetry assumption in the retrieval algorithm and the low horizontal resolution of the measurement weakening in the amplitude and phase shi...
متن کاملSimulation studies of GPS radio occultation measurements
The atmospheric propagation of GPS signals under multipath conditions and their detection are simulated. Using the multiple phase screen method C/A-code modulated L1 signals are propagated through a spherically symmetric refractivity field derived from a high-resolution radio sonde observation. The propagated signals are tracked by GPS receivers implemented in software and converted to refracti...
متن کاملThe Assimilation of Radio Occultation Measurements
GPS radio occultation (RO) measurements are a potentially important new source of profile information that can be used in numerical weather prediction (NWP). This paper outlines the options for assimilating the RO measurements into an operational NWP system. The importance of realistic estimates for the observation error estimates is discussed.
متن کاملDeveloping an Electron Density Profiler over Europe Based on Space Radio Occultation Measurements
This paper presents the development of an Artificial Neural Network electron density profiler based on electron density profiles collected from radio occultation (RO) measurements from LEO (Low Earth Orbit) satellites to improve the spatial and temporal modeling of ionospheric electron density over Europe. The significance in the accurate determination of the electron density profile lies on th...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Space Physics
سال: 2009
ISSN: 0148-0227
DOI: 10.1029/2009ja014399