Results 181 to 190 of about 7,524 (217)

Can the Spire GNSS-RO CubeSats Constellation Observe Earth's Gravity Field?

Dual-frequency GNSS data from onboard Precise Orbit Determination (POD) antennas has emerged as a promising tool for investigating the time-variable components of Earth's gravity field. Over the past two decades, POD antennas onboard Low Earth Orbit (LEO) satellites have significantly advanced the study of the long-wavelength components of Earth's ...
Parisa Shafiei, Sajad Tabibi
openaire   +1 more source

Mountaintop GNSS-R and GNSS-RO Experiment: New Results and Insights

ION Pacific PNT, 2019
Jade Morton, Harrison Bourne, Brian Breitsch, Ian Collett, Steve Taylor, Neeraj Pujara   +5 more
openaire   +1 more source

Variations of Kelvin Waves around the Tropical Tropopause Inversion Layer from GNSS RO Measurements

Journal of the Atmospheric Sciences
Abstract In the present study, the tropical tropopause inversion layer (TIL) Kelvin waves are extracted from the Global Navigation Satellite System (GNSS) radio occultation (RO) temperature data of multiple missions from January 2007 to December 2020.
Jiahua Li, Xiaohua Xu, Jia Luo
openaire   +1 more source

Integrative oncology: Addressing the global challenges of cancer prevention and treatment

Ca-A Cancer Journal for Clinicians, 2022
Jun J Mao,, Msce, Lorenzo Cohen, Karen M Mustian   +2 more
exaly  

Final Technical Note of 'Impact assessment of commercial GNSS-RO data'

2021
Lonitz, Katrin, Marquardt, C., Bowler, Neill, Healy, Sean   +3 more
openaire   +1 more source

Neural network recognition of ionospheric anomaly events based on GNSS RO data

2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE), 2021
Zhengzheng Ma, Bin Xu, Yali Ren
openaire   +1 more source

Comparison of reference upper-air GRUAN and homogenized RHARM data with GNSS-RO

The study of thermodynamical variables, such as temperature and relative humidity in the upper troposphere/lower stratosphere (UT/LS), is one of the key elements for the study of climate change. Several studies estimated trends both regionally and globally in the UT/LS, using both satellite and ground-based data and different measurement techniques ...
Fabrizio Marra, Emanuele Tramutola, Ilaria Gandolfi, Gessica Cosimato, Marco Rosoldi, Fabio Madonna   +5 more
openaire   +1 more source

GPS Single-Frequency: From First cm-POD to Single Frequency GNSS-RO/R

2018
In this section we introduce what we call “Positive Code-Phase” linear combination or the LP linear combination (phase and code added) to eliminate the first-order ionosphere effect and estimate LEO orbits using single-frequency GPS measurements, (see Svehla and Rothacher 2003a; 2005b).
openaire   +1 more source

Prediction and Monitoring of Precipitable Water Vapor (PWV) Profiles Using GNSS-Radio Occultation (GNSS-RO) Satellite Technique in Turkey

Water vapor is a natural greenhouse gas that shapes weather patterns and can condense in the atmosphere. Almost all of the water vapor, which plays an active role in the hydrological cycle, is found in the troposphere. The concentration of water vapor is highly variable according to location and temperature.
openaire   +1 more source

A new method to calibrate residual ionospheric error of GNSS RO bending angle

GPS Solutions, 2022
Mingzhe Li, Xinan Yue, Weixing Wan
openaire   +1 more source