Results 51 to 60 of about 2,048 (223)
Low-Cost GNSS-R Altimetry on a UAV for Water-Level Measurements at Arbitrary Times and Locations
Sensors, 2019 Together with direct Global Navigation Satellite System (GNSS) signals, the signals reflected at the water surface can be received by an unmanned aerial vehicle (UAV).
Kaoru Ichikawa +3 more
doaj +1 more source
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 +8 more
wiley +1 more source
Sea Ice Detection Based on Differential Delay-Doppler Maps from UK TechDemoSat-1 [PDF]
, 2017 Global Navigation Satellite System (GNSS) signals can be exploited to remotely sense atmosphere and land and ocean surface to retrieve a range of geophysical parameters. This paper proposes two new methods, termed as power-summation of differential Delay-
Wickert, Jens +3 more
core +2 more sources
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 +3 more
doaj +1 more source
Ground-based GNSS-R solutions by means of software defined radio [PDF]
, 2016 Usually ground-based GNSS-R installations are either existing geodetic GNSS stations or they are built with dedicated components that enable the deduction and monitoring of physical and geometrical properties of the reflecting area around that particular
Haas, Rüdiger +2 more
core +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 +5 more
wiley +1 more source
The Impact of Inter-Modulation Components on Interferometric GNSS-Reflectometry [PDF]
, 2016 The interferometric Global Navigation Satellite System Reflectometry (iGNSS-R) exploits the full spectrum of the transmitted GNSS signal to improve the ranging performance for sea surface height applications.
Cardellach, Estel +6 more
core +2 more sources
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 +5 more
wiley +1 more source
Evaluating Impact of Rain Attenuation on Space-borne GNSS Reflectometry Wind Speeds [PDF]
, 2019 The novel space-borne Global Navigation Satellite System Reflectometry (GNSS-R) technique has recently shown promise in monitoring the ocean state and surface wind speed with high spatial coverage and unprecedented sampling rate.
Asgarimehr, Milad +2 more
core +1 more source
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 +21 more
wiley +1 more source