Results 11 to 20 of about 467 (182)
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
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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
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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. Such performance is suitable for a whole new range of demanding applications,
Ferreira, António +3 more
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Remote Sensing, 2023 High-frequency skywave propagation can be heavily impacted by D- and E-region dynamics requiring accurate global measurements to optimize performance. A standard measurement technique is to use ionosondes, but they are unable to measure below 1 MHz and ...
Dylan J. Shaver +5 more
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Remote Sensing, 2021 The Global Navigation Satellite System (GNSS) radio occultation (RO) is a remote sensing technique that uses International System of Units (SI) traceable GNSS signals for atmospheric limb soundings.
Yong Chen +3 more
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Atmospheric GNSS RO 1D-Var in Use at UCAR: Description and Validation
Remote Sensing, 2022 This paper describes, along with some validation results, the one-dimensional variational method (1D-Var) that is in use at the University Corporation for Atmospheric Research (UCAR) to retrieve atmospheric profiles of temperature, pressure, and humidity from the observation of the Global Navigation Satellite System (GNSS) radio occultation (RO).
Tae-Kwon Wee +4 more
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Geophysical Research Letters, 2023 This study assesses the potential influence of global navigation satellite system (GNSS) radio occultation (RO) data assimilation on the forecast skill of tropical cyclone formation over the western North Pacific in September–October 2019 through a ...
Hsu‐Feng Teng +2 more
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Stability of CubeSat Clocks and Their Impacts on GNSS Radio Occultation
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
Amir Allahvirdi-Zadeh +4 more
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Global tropopause height determination using GNSS radio occultation
Egyptian Journal of Remote Sensing and Space Sciences, 2023 The tropopause layer is a crucial stratum of the earth's atmosphere that attracts more interest from climate and atmospheric researchers. The observables of the global navigation satellite system (GNSS) allow for continuous and long-term research of the ...
Mohamed Zhran, Ashraf Mousa
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Statistically analyzing the effect of ionospheric irregularity on GNSS radio occultation atmospheric measurement [PDF]
Atmospheric Measurement Techniques, 2021 The Global Navigation Satellite System (GNSS) atmospheric radio occultation (RO) has been an effective method for exploring Earth's atmosphere. RO signals propagate through the ionosphere before reaching the neutral atmosphere.
M. Li +7 more
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