Results 11 to 20 of about 446 (185)
Global GNSS-RO Electron Density in the Lower Ionosphere
Remote Sensing, 2022 Lack of instrument sensitivity to low electron density (Ne) concentration makes it difficult to measure sharp Ne vertical gradients (four orders of magnitude over 30 km) in the D/E-region.
Dong L. Wu +2 more
doaj +3 more sources
Atmospheric Rivers in Africa Observed with GNSS-RO and Reanalysis Data
Remote SensingAtmospheric Rivers (ARs) transport significant amounts of moisture and cause extreme precipitation events, yet their behavior over Africa is not well understood. This study addresses this gap by analyzing the occurrence, seasonal variability, and spatial
Linda Martina Maier +2 more
doaj +2 more sources
Efficient collocation of global navigation satellite system radio occultation soundings with passive nadir microwave soundings [PDF]
Atmospheric Measurement Techniques, 2023 Radio occultation (RO) using the global navigation satellite system (GNSS) can be used to infer atmospheric profiles of microwave refractivity in the Earth's atmosphere.
A. Meredith +3 more
doaj +1 more source
Remote Sensing, 2023 The global navigation satellite system radio occultation (GNSS-RO) is an important means of space-based meteorological observation. It is necessary to test the Global Navigation Satellite System Occultation signal receiver on the ground before the ...
Wei Li +9 more
doaj +1 more source
Atmosphere, 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 +1 more source
Real-time GNSS precise positioning: RTKLIB for ROS [PDF]
International Journal of Advanced Robotic Systems, 2020 The global navigation satellite system (GNSS) constitutes an effective and affordable solution to the outdoor positioning problem. When combined with precise positioning techniques, such as the real time kinematic (RTK), centimeter-level positioning accuracy becomes a reality.
Ferreira, António +3 more
openaire +3 more sources
Commercial GNSS Radio Occultation on Aerial Platforms With Off-The-Shelf Receivers
Navigation, 2022 In recent decades, GNSS radio occultation (RO) soundings have proven to be an invaluable input to global weather forecasting. The success of government programs such as COSMIC is now complemented by commercial low-cost cubesats.
Bryan C. Chan +10 more
doaj +1 more source
Planetary boundary layer height retrieval using GNSS Radio Occultation over Egypt
Egyptian Journal of Remote Sensing and Space Sciences, 2022 Global Navigation Satellite System (GNSS) Radio Occultation (RO) is an excellent remote sensing technique for sounding the atmosphere. GNSS satellites send signals through the atmosphere of the Earth, and a GNSS receiver mounted on a Low Earth Orbit (LEO)
Mohamed Zhran, Ashraf Mousa
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An evaluation of GNSS radio occultation atmospheric profiles from Sentinel-6
Egyptian Journal of Remote Sensing and Space Sciences, 2023 The Global Navigation Satellite System (GNSS) radio occultation (RO) significantly impacts climate change monitoring. GNSS RO is based mainly on the refraction of the GNSS signals transmitted by satellites and received by a receiver on a Low Earth Orbit (
Mohamed Zhran
doaj +1 more source
An Innovative Signal Processing Scheme for Spaceborne Integrated GNSS Remote Sensors
Remote Sensing, 2023 The vigorous development of the global navigation satellite system (GNSS) has led to a boom in GNSS radio occultation (GNSS RO) and GNSS reflectometry (GNSS-R) techniques.
Tongsheng Qiu +12 more
doaj +1 more source