Results 11 to 20 of about 825,597 (228)

Seeking Optimal GNSS Radio Occultation Constellations Using Evolutionary Algorithms

open access: yesRemote Sensing, 2019
Given the great achievements of the Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC) mission in providing huge amount of GPS radio occultation (RO) data for weather forecasting, climate research, and ionosphere monitoring,
Xiaohua Xu   +4 more
doaj   +7 more sources

KOMPSAT-5 GNSS Radio Occultation Data Operations [PDF]

open access: yesGeo Data, 2022
The Korea Aerospace Research Institute launched KOMPSAT-5 on August 22, 2013, and has been operating for 10 years. KOMPSAT-5 has SAR (Synthetic Aperture Radar) for earth observation missions, and collects data necessary for earth atmosphere analysis ...
Okchul Jung   +3 more
doaj   +2 more sources

An Overview on GNSS Radio Occultation [PDF]

open access: yes, 2010
An overview on GNSS Radio Occultation (GNSS-RO) technique and its application in geodesy and atmospheric research was presented at the Institute of Astronomical and Physical Geodesy (APMG), University of Bonn in Germany, on 13th July 2010.
Shabanloui, Akbar
openaire   +2 more sources

Real-Time Tomographic Inversion of Truncated Ionospheric GNSS Radio Occultations

open access: yesRemote Sensing, 2023
This paper presents a new way of combining Abel inversion and the Chapman model with a linearly increasing scale height to retrieve ionospheric electron density vertical profiles from truncated-sounding radio-occultation data. A linear Vary–Chap model is
Germán Olivares-Pulido   +9 more
doaj   +5 more sources

Assimilation of GNSS radio occultation observations in GRAPES [PDF]

open access: yesAtmospheric Measurement Techniques, 2014
This paper reviews the development of the global navigation satellite system (GNSS) radio occultation (RO) observations assimilation in the Global/Regional Assimilation and PrEdiction System (GRAPES) of China Meteorological Administration, including ...
Y. Liu, Y. Liu, J. Xue
doaj   +3 more sources

A simplified approach for generating GNSS radio occultation refractivity climatologies [PDF]

open access: yesAtmospheric Measurement Techniques, 2013
The possibility of simplifying the retrieval scheme required to produce GNSS radio occultation refractivity climatologies is investigated. In a new, simplified retrieval approach, the main statistical analysis is performed in bending angle space and an ...
H. Gleisner, S. B. Healy
doaj   +3 more sources

GNSS Signal Jamming as Observed From Radio Occultation

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The jamming is found to increase significantly in recent years, and its impact is evident in Global Navigation Satellite System (GNSS) radio occultation (RO) measurements, such as those from COSMIC-2.
Dong L. Wu
doaj   +3 more sources

Assessment of Accuracy of COSMIC and KOMPSAT GNSS Radio Occultation Temperature and Pressure Measurements over the Philippines

open access: yesAtmosphere
Radio occultation (RO) is a technique used for measuring planetary atmosphere properties by orbiting satellites, like temperature, pressure, and water vapor.
Karl Philippe A. Descalzo   +1 more
doaj   +2 more sources

Effect of Multiple GNSS Integration on the Number and Spatiotemporal Coverage of Radio Occultation Events

open access: yesAtmosphere, 2022
The development of global navigation satellite systems (GNSSs) and multi-system compatible radio occultation (RO) techniques provides favorable conditions and opportunities for increasing the number of occultation events and improving their ...
Congliang Liu   +6 more
doaj   +3 more sources

Ionospheric bending correction for GNSS radio occultation signals [PDF]

open access: yesRadio Science, 2011
Ionospheric propagation effects on Global Navigation Satellite Systems (GNSS) signals are the most pronounced during radio occultation due to long ionospheric travel paths of the received signal on low Earth orbiting satellites. Inhomogeneous plasma distribution and anisotropy cause higher‐order nonlinear refraction effects on GNSS signals which cannot
Hoque, Mohammed Mainul   +1 more
openaire   +3 more sources

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