Results 111 to 120 of about 200,933 (218)

A Novel Sampling Approach in GNSS-RO Receivers with Open Loop Tracking Method

AUT Journal of Electrical Engineering, 2019
Propagation of radio occultation (RO) signals through the lower troposphere results in high phase acceleration and low signal to noise ratio signal. The excess Doppler estimation accuracy in lower troposphere is very important in receiving RO signals which can be estimated by sliding window spectral analysis.
openaire   +2 more sources

Desarrollo de técnicas de procesamiento de señales y análisis de cobertura en eventos GNSS-RO para el USAT-I [PDF]

La radio ocultación (RO) es una técnica de sensado remoto que utiliza la propagación de señales de radio para obtener información sobre el medio a través del cual estas señales se propagan.
Saggese, Arian, Smidt, Javier Alberto
core  

Prospects for meteotsunami detection in earth's atmosphere using GNSS observations. [PDF]

GPS Solut, 2023
Vergados P, Krishnamoorthy S, Martire L, Mrak S, Komjáthy A, Morton YTJ, Vilibić I.   +6 more
europepmc   +1 more source

Height‐Dependent Evolution of the Ionospheric Response to the May 2024 Superstorm: Global GNSS‐POD, GNSS‐RO, and Ground‐Based Observations

Journal of Geophysical Research: Space Physics
Abstract Capturing global ionospheric response during extreme geomagnetic storms remains a major observational challenge. During 10–11 May, 2024 superstorm, we investigate the height‐dependent response of the F‐region using multi‐constellation GNSS‐POD limb‐sounding measurements from COSMIC‐2, Spire, PlanetiQ, and FengYun‐3 satellites.
Nimalan Swarnalingam, Dong L. Wu, Daniel J. Emmons, Cornelius Csar Jude H. Salinas   +3 more
openaire   +1 more source

Overview of Space-Capable Global Navigation Satellite Systems Receivers: Heritage, Status and the Trend towards Miniaturization. [PDF]

Sensors (Basel), 2023
Gill E, Morton J, Axelrad P, Akos DM, Centrella M, Speretta S.   +5 more
europepmc   +1 more source

Validation of the Accuracy of the GNSS RO Temperature Data for Climate Monitoring over Africa

Abstract Africa is facing significant impacts from temperature and climate change, with a pronounced warming trend surpassing the global average over the past century. This trend is reshaping climates and ecosystems, leading to increased temperatures, more frequent heatwaves, and altered precipitation patterns across different regions ...
Ibrahim Usman Sa’i, Tajul Ariffin Musa, Kamorudeen Aleem, Terwase Tosin Youngu, Yusuf Obadaki, Wan Aris Anom, Mohammed Abdu Nasara   +6 more
openaire   +1 more source

Assessing GNSS Reflectometry for High‐Latitude 3D Ionospheric Imaging

This study investigates whether Global Navigation Satellite System Reflectometry (GNSS‐R) measurements from low‐Earth‐orbit (LEO) satellites can improve three‐dimensional (3D) ionospheric electron density imaging, with a focus on high‐latitude regions ...
Brian Breitsch, Brenna Royersmith, Jade Y. Morton   +2 more
core   +1 more source

Resolving the 21st century temperature trends of the upper troposphere-lower stratosphere with satellite observations. [PDF]

Sci Rep, 2023
Ladstädter F, Steiner AK, Gleisner H.
europepmc   +1 more source

Blind Adaptive Beamformer Based on Orthogonal Projections for GNSS [PDF]

, 2012
The quality of the ranging data provided by a global navigation satellite systems (GNSS) receiver largely depends on the synchronization error, that is, on the accuracy of the propagation time-delay estimation of the line-of-sight (LOS) signal.
Noll, Tobias G., Meurer, Michael, Antreich, Felix, Sgammini, Matteo, Kurz, Lothar   +4 more
core  

Assimilating Tianmu‐1 RO Data From a 23‐Satellite Constellation to Enhance the Track Forecasts of Typhoon Gaemi (2024)

Geophysical Research Letters
Tianmu‐1 commercial 23‐satellite constellation provides over 30,000 daily Global Navigation Satellite System (GNSS) Radio Occultation (RO) profiles, significantly expanding atmospheric profiling observations.
S. Yang, X. Zou
doaj   +1 more source