Results 1 to 10 of about 428 (148)
Assessment of Commercial GNSS Radio Occultation Performance from PlanetiQ Mission
Remote SensingGlobal Navigation Satellite System (GNSS) radio occultation (RO) provides valuable 3-D atmospheric profiles with all-weather, all the time and high accuracy. However, GNSS RO mission data are still limited for global coverage.
Mohamed Zhran +4 more
doaj +4 more sources
Seeking Optimal GNSS Radio Occultation Constellations Using Evolutionary Algorithms
Remote 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 +6 more sources
Assessment of ZTD Derived from COSMIC Occultation Data with ECWMF, Radiosondes, and GNSS [PDF]
Sensors, 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
Stability of CubeSat Clocks and Their Impacts on GNSS Radio Occultation [PDF]
Remote Sensing, 2022 Global Navigation Satellite Systems’ radio occultation (GNSS-RO) provides the upper troposphere-lower stratosphere (UTLS) vertical atmospheric profiles that are complementing radiosonde and reanalysis data. Such data are employed in the numerical weather prediction (NWP) models used to forecast global weather as well as in climate change studies ...
Kan Wang +2 more
exaly +4 more sources
KOMPSAT-5 GNSS Radio Occultation Data Operations [PDF]
Geo 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
Real-Time Tomographic Inversion of Truncated Ionospheric GNSS Radio Occultations
Remote 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 +4 more sources
Experimental Validation of GNSS Interferometric Radio Occultation [PDF]
Remote Sensing, 2019 In this work, we present experimental results on the interferometric radio occultation (iRO) signal processing techniques, and compare the performance to the closed-loop and open-loop processing used in conventional radio occultation measurements. We also discuss the effects of antenna beam width to mitigate inter-satellite interferences, as well as ...
Manuel Martin-Neira +2 more
exaly +2 more sources
Assimilation of GNSS radio occultation observations in GRAPES [PDF]
Atmospheric 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
Probability of intense precipitation from polarimetric GNSS radio occultation observations. [PDF]
Q J R Meteorol Soc, 2018 There is currently a gap in satellite observations of the moisture structure during heavy precipitation conditions, since infrared and microwave sounders cannot sense water‐vapour structure near the surface in the presence of intense precipitation. Conversely, Global Navigation Satellite System (GNSS) radio occultations (RO) can profile the moisture ...
Cardellach E +5 more
europepmc +4 more sources
The power of vertical geolocation of atmospheric profiles from GNSS radio occultation. [PDF]
J Geophys Res Atmos, 2017 AbstractHigh‐resolution measurements from Global Navigation Satellite System (GNSS) radio occultation (RO) provide atmospheric profiles with independent information on altitude and pressure. This unique property is of crucial advantage when analyzing atmospheric characteristics that require joint knowledge of altitude and pressure or other ...
Scherllin-Pirscher B +4 more
europepmc +5 more sources