Results 21 to 30 of about 200,933 (218)
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
openaire +3 more sources
gnss-ro/aws-opendata: GNSS-RO AWS Open Data v1.0.0
, 2023 GNSS Radio Occultation Data in the AWS ...
gnss-ro, amymcvey, ssleroy
core +1 more source
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
openaire +3 more sources
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
doaj +1 more source
Improved models for estimating sporadic-E intensity from GNSS radio occultation measurements
Frontiers in Astronomy and Space Sciences, 2023 Several models for estimating sporadic-E intensity from Global Navigation Satellite System (GNSS) radio occultation (RO) observation have previously been developed using a single perturbation or intensity parameter, such as phase-based total electron ...
Daniel J. Emmons +7 more
doaj +1 more source
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
doaj +1 more source
Effect of GNSS RO on prediction of the 2021 Henan Rainstorm
, 2022 Abstract Precise prediction of the extremely heavy rainstorm is still challenging due to less or low spatial-temporal measurements. Nowadays, space-borne Global Navigation Satellite System (GNSS) radio occultation (RO) provides high spatial-resolution atmospheric parameters, which may improve the prediction precision of heavy rainfalls. In this
Yu Wang, Shuanggen Jin
openaire +1 more source
GNSS Radio Occultation in Advanced Numerical Weather Prediction Models
GEOmedia, 2019 GPS-Radio Occultation (GPS-RO), and generally, Global Navigation Satellite System Radio Occultation (GNSS-RO), is a technique that measures the refractivity of the Earth's atmosphere as a Low Earth Orbit (LEO) satellite listens to the radio signal of a ...
Guillermo Bosch
doaj +3 more sources
GNSS radio occultation soundings from commercial off-the-shelf receivers on board balloon platforms [PDF]
Atmospheric Measurement Techniques, 2023 The Global Navigation Satellite System (GNSS) radio occultation (RO) technique has proven to be an effective tool for Earth atmosphere profiling. Traditional spaceborne RO satellite constellations are expensive with relatively low sampling density for ...
K. J. Nelson +8 more
doaj +1 more source
Differential Code Bias Estimation using Multi-GNSS Observations and Global Ionosphere Map [PDF]
, 2014 Measurements of Global Navigation Satellite System (GNSS) receivers are affected by systematic offsets re- lated to group and phase delays of the signal generation and processing chain.
Hauschild, André +3 more
core +1 more source