Results 41 to 50 of about 723 (178)

Introducing Reflected GNSS TEC Data Into ANCHOR Ionospheric Data Assimilation Model

Space Weather, Volume 24, Issue 5, May 2026.
Abstract ANCHOR is a novel data assimilation (DA) algorithm developed at the U.S. Naval Research Laboratory to improve ionospheric nowcasting by increasing accuracy and decreasing computational cost. As a parameterized DA model, ANCHOR represents the ionosphere using physical parameters such as the F2 layer peak (Nm $Nm$F2), which characterizes a ...
Brenna Royersmith, Victoriya V. Forsythe, Brian Breitsch, Meghan R. Burleigh, Kate A. Zawdie, Y. Jade Morton   +5 more
wiley   +1 more source

Computation Approach for Quantitative Dielectric Constant from Time Sequential Data Observed by CYGNSS Satellites

Remote Sensing, 2021
This paper describes a computation method for obtaining dielectric constant using Global Navigation Satellite System reflectometry (GNSS-R) products. Dielectric constant is a crucial component in the soil moisture retrieval process using reflected GNSS ...
Junchan Lee, Sunil Bisnath, Regina S.K. Lee, Narin Gavili Kilane   +3 more
doaj   +1 more source

Monitoring of the Transient Sea Level Variations Associated With Hurricane‐Induced Storm Surges by GNSS‐IR

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract As global climate change intensifies, hurricane‐induced storm surges are becoming more frequent and severe. While Global Navigation Satellite System‐Interferometric Reflectometry (GNSS‐IR) is widely used to monitor sea level variations, its capability to detect rapid and extreme events remains limited.
Xin Chang, Zuozhu Tan, Kai Liu, Zhao Li, Nico Sneeuw, Qusen Chen, Dawei Li, Taoyong Jin, Weiping Jiang   +8 more
wiley   +1 more source

KAUSTSat: Saudi Arabia's First Hyperspectral CubeSat Mission for Earth Observation

Earth and Space Science, Volume 13, Issue 3, March 2026.
Abstract Developed by the King Abdullah University of Science and Technology (KAUST) to support research in atmospheric science and remote sensing, KAUSTSat represented Saudi Arabia's (and the Middle East's) first research‐focused hyperspectral CubeSat mission for Earth observation.
Victor Angulo, Dario Scilla, Jorge L. Rodriguez, Naif Alsalem, Kasper Johansen, Matthew F. McCabe   +5 more
wiley   +1 more source

Monitoring Flood Inundation Dynamics From Space

Reviews of Geophysics, Volume 64, Issue 1, March 2026.
Abstract With the increasing intensity and frequency of flood events worldwide, the need for accurate and timely inundation mapping has never been more critical. Large‐scale flood extent estimations are vital for coordinating effective disaster response, facilitating recovery, and building future resilience.
C. Campo, P. Tamagnone, S. Choy, T. D. Tran, G. J.‐P. Schumann, Y. Kuleshov   +5 more
wiley   +1 more source

Remote sensing and its applications using GNSS reflected signals: advances and prospects

Satellite Navigation
The Global Navigation Satellite Systems (GNSS), including the US’s GPS, China’s BDS, the European Union’s Galileo, and Russia’s GLONASS, offer real-time, all-weather, any-time, anywhere and high precision observations by transmitting L band signals ...
Shuanggen Jin, Adriano Camps, Yan Jia, Feng Wang, Manuel Martin-Neira, Feixiong Huang, Qingyun Yan, Shuangcheng Zhang, Zhongyu Li, Komi Edokossi, Dongkai Yang, Zhiyu Xiao, Zhongmin Ma, Weihua Bai   +13 more
doaj   +1 more source

Sea Level Determination in the Spanish Coast Using GNSS-R

Proceedings, 2019
GNSS reflectometry (GNSS-R) a technique for the study of variations in the height of sea level and inland waters, and for the study of soil moisture, based on the comparison of the direct and reflected noise signal.
Víctor Puente, Marcelino Valdés
doaj   +1 more source

Evaluating SWOT in the Coastal Zone: Comparisons With Tide Gauge and Airborne LiDAR in the Bristol Channel and Severn Estuary, UK

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract Traditional nadir altimeters struggle with coastal water surface elevation (WSE) measurement and fine‐scale river‐estuary interactions, due to land‐water signal interference and their wide inter‐track spacing. The wide‐swath Surface Water and Ocean Topography (SWOT) mission, using a new Ka‐band radar interferometer, aims to address these ...
Youtong Rong, Paul Bates, Jeff Neal, Paul Bell, Christine Gommenginger, Ian Dougal Lichtman, Christopher Banks, Francisco J. M. Calafat, Adrien Martin, Jennifer Brown, Richard Cooke, Christopher Balfour, Michela De Dominicis, Marta Payo Payo, Simon Williams, Laurent Amoudry, Stephen Chuter, Simon Neill, Jude Chisholm, Colin J. Gleason, John Kupiec, Matt Lewis   +21 more
wiley   +1 more source

Multi-Global Navigation Satellite System for Earth Observation: Recent Developments and New Progress

Remote Sensing
The Global Navigation Satellite System (GNSS) has made important progress in Earth observation and applications. With the successful design of the BeiDou Navigation Satellite System (BDS), four global navigation satellite systems are available worldwide,
Shuanggen Jin, Xuyang Meng, Gino Dardanelli, Yunlong Zhu   +3 more
doaj   +1 more source

TGCAT—A Tool to Analyse the Content of Sea Level Data Portals

Geoscience Data Journal, Volume 13, Issue 1, January 2026.
TGCAT is an online tool (www.sonel.org/tgcat) to help sea level data providers, data aggregators, and data users to visualise available tide gauge datasets. It is aimed to improve data referencing and discoverability in the global tide gauge data centres. The code has been fully developed in Python and is open‐source.
Laurent Testut, Adrien Laval, Clémence Chupin, Mikaël Guichard, Begoña Pérez Gómez   +4 more
wiley   +1 more source