Results 11 to 20 of about 14,468 (304)

The Radio Occultation Processing Package, ROPP [PDF]

open access: yesAtmospheric Measurement Techniques, 2015
This paper describes the Radio Occultation Processing Package, ROPP, a product of the EUMETSAT Radio Occultation Meteorology Satellite Application Facility (ROM SAF) developed by a large number of scientists over many years.
I. D. Culverwell   +4 more
doaj   +4 more sources

Assessment of ZTD Derived from COSMIC Occultation Data with ECWMF, Radiosondes, and GNSS [PDF]

open access: yesSensors, 2022
Global Navigation Satellite System (GNSS) signals generate slant tropospheric delays when they pass through the atmosphere, which is recognized as the main source of error in many spatial geodetic applications. The zenith tropospheric delay (ZTD) derived
Naifeng Fu   +8 more
doaj   +2 more sources

Generation of a bending angle radio occultation climatology (BAROCLIM) and its use in radio occultation retrievals [PDF]

open access: yesAtmospheric Measurement Techniques, 2015
In this paper, we introduce a bending angle radio occultation climatology (BAROCLIM) based on Formosat-3/COSMIC (F3C) data. This climatology represents the monthly-mean atmospheric state from 2006 to 2012.
B. Scherllin-Pirscher   +3 more
doaj   +4 more sources

The GRAS-2 radio occultation mission [PDF]

open access: yesAtmospheric Measurement Techniques
The second generation of the Global navigation satellite system Receiver for Atmospheric Sounding (GRAS-2) is a radio occultation (RO) instrument which is capable of providing 2000 atmospheric profiles per day.
J. Rasch   +3 more
doaj   +4 more sources

Estimation of refractivity uncertainties and vertical error correlations in collocated radio occultations, radiosondes, and model forecasts [PDF]

open access: yesAtmospheric Measurement Techniques, 2022
Random uncertainties and vertical error correlations are estimated for three independent data sets. The three collocated data sets are (1) refractivity profiles of radio occultation measurements retrieved from the Metop-A and B and COSMIC-1 missions, (2) 
J. K. Nielsen   +3 more
doaj   +1 more source

Retrieval of Electron Density Profile for KOMPSAT-5 GPS Radio Occultation [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2007
The AOPOD (Atmosphere Occultation and Precision Orbit Determination) system, the secondary payload of KOMPSAT (KOrea Multi-Purpose SATellite)-5 scheduled to be launched in 2010, shall provide GPS radio occultation data.
Woo-Kyoung Lee   +8 more
doaj   +1 more source

Accuracy and Stability of Radio Occultation Dry Temperature Profiles from Fengyun Satellites

open access: yes应用气象学报, 2023
The earth's climate has undergone significant changes due to the combined effects of natural changes and human activities. To understand the impact of climate change, the most fundamental work is to establish high-quality data required for climate ...
Liao Mi   +6 more
doaj   +1 more source

Retrieval of the Stratospheric Density by the Star Occultation

open access: yesAerospace, 2023
The navigation by the stellar refraction is important for a LEO (Low-Earth-Orbit) satellite, especially in a GNSS (Global Navigation Satellite System)-denied environment, since it is totally autonomous.
Kedong Wang, Zhennan Li, Shaoxiong Zhang
doaj   +1 more source

Radio Interferometric Observation of an Asteroid Occultation [PDF]

open access: yesThe Astronomical Journal, 2018
Abstract The occultation of the radio galaxy 0141+268 by the asteroid (372) Palma on 2017 May 15 was observed using six antennas of the Very Long Baseline Array (VLBA). The shadow of Palma crossed the VLBA station at Brewster, Washington.
Jorma Harju   +7 more
openaire   +5 more sources

High-order ionospheric effects on electron density estimation from Fengyun-3C GPS radio occultation [PDF]

open access: yesAnnales Geophysicae, 2017
GPS radio occultation can estimate ionospheric electron density and total electron content (TEC) with high spatial resolution, e.g., China's recent Fengyun-3C GPS radio occultation. However, high-order ionospheric delays are normally ignored.
J. Li, J. Li, S. Jin, S. Jin
doaj   +1 more source

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