Results 11 to 20 of about 2,048 (223)

Estimating Wave Direction Using Terrestrial GNSS Reflectometry [PDF]

Remote Sensing, 2019
The signal-to-noise ratio (SNR) data are part of the global navigation satellite systems (GNSS) observables. In a marine environment, the oscillation of the SNR data can be used to derive reflector heights. Since the attenuation of the SNR oscillation is
Jörg Reinking, Ole Roggenbuck, Gilad Even-Tzur   +2 more
doaj   +2 more sources

Airborne GNSS Reflectometry for Water Body Detection [PDF]

Remote Sensing, 2021
This article is dedicated to the study of airborne GNSS-R signal processing techniques for water body detection and edge localization using a low-altitude airborne carrier with high rate reflectivity measurements.
Hamza Issa, Georges Stienne, Serge Reboul, Mohamad Raad, Ghaleb Faour   +4 more
doaj   +2 more sources

Dynamic Dual Polarized GNSS Reflectometry Using UAV [PDF]

2021 15th European Conference on Antennas and Propagation (EuCAP), 2021
In this paper, GNSS-Reflectometry is performed using Unmanned Aerial Vehicle (UAV). Received GNSS multipath signal is utilized to perform environment remote sensing in dynamic and static flight modes. Right-Hand Circular Polarized (RHCP) multipath signal is recorded and its interference frequency is used to estimate the height of UAV above the ground ...
Pärssinen Aarno, Leinonen Marko, Berg Markus, Regmi Ankit, Hänninen Tuomo   +4 more
openaire   +2 more sources

Snow Depth Measurements by GNSS-IR at an Automatic Weather Station, NUK-K

Remote Sensing, 2022
Studies have shown that geodetic Global Navigation Satellite System (GNSS) stations can be used to measure snow depths using GNSS interferometric reflectometry (GNSS-IR).
Trine S. Dahl-Jensen, Michele Citterio, Jakob Jakobsen, Andreas P. Ahlstrøm, Kristine M. Larson, Shfaqat A. Khan   +5 more
doaj   +1 more source

GNSS-R monitoring of soil moisture dynamics in areas of severe drought: example of Dahra in the Sahelian climatic zone (Senegal)

European Journal of Remote Sensing, 2022
With population growth, water will increase in the following decades tremendously. The optimization of water allocation for agriculture requires accurate soil moisture (SM) monitoring.
Minh-Cuong Ha, José Darrozes, Muriel Llubes, Manuela Grippa, Guillaume Ramillien, Frédéric Frappart, Frédéric Baup, Håkan Torbern Tagesson, Eric Mougin, Idrissa Guiro, Laurent Kergoat, Huu Duy Nguyen, Lucia Seoane, Gregory Dufrechou, Phuong-Lan Vu   +14 more
doaj   +1 more source

The GRSS Standard for GNSS-Reflectometry

IGARSS 2020 - 2020 IEEE International Geoscience and Remote Sensing Symposium, 2020
Talk delivered in 2020 IEEE International Geoscience and Remote Sensing Symposium online, 26 September - 2 October ...
Carreno-Luengo, H., Camps, A., Flouri, N., Martin-Neira, M., Ruf, C., Wang, T., Khalsa, S., Clarizia, M., Reynolds, J., Johnson, J., O’Brien, A., Galdi, C., di Bisceglie, M., Dielacher, A., Jales, P., Unwin, M., King, L., Foti, G., Shah, R., Pascual, D., Schreiner, B., Asgarimehr, M., Wickert, J., Ribó, S., Cardellach, E.   +24 more
openaire   +4 more sources

From GPS Receiver to GNSS Reflectometry Payload Development for the Triton Satellite Mission

Remote Sensing, 2021
The global positioning system (GPS) receiver has been one of the most important navigation systems for more than two decades. Although the GPS system was originally designed for near-Earth navigation, currently it is widely used in highly dynamic ...
Yung-Fu Tsai, Wen-Hao Yeh, Jyh-Ching Juang, Dian-Syuan Yang, Chen-Tsung Lin   +4 more
doaj   +1 more source

PRETTY – passive GNSS-Reflectometry for CubeSats [PDF]

e & i Elektrotechnik und Informationstechnik, 2022
AbstractThe Passive Reflectometry and Dosimetry (PRETTY) is a small satellite mission developed by a consortium consisting of RUAG Space GmbH (RSA), Graz University of Technology (TUG), and Seibersdorf Laboratories (SL). The primary objective of the passive altimetry within the PRETTY mission is to measure the ice and sea ice surface elevation and ...
Andreas Dielacher, Heinrich Fragner, Otto Koudelka   +2 more
openaire   +1 more source

Effective Surface Roughness Impact in Polarimetric GNSS-R Soil Moisture Retrievals

Remote Sensing, 2023
Single-pass soil moisture retrieval has been a key objective of Global Navigation Satellite System-Reflectometry (GNSS-R) for the last decade. Achieving this goal will allow small satellites with GNSS-R payloads to perform such retrievals at high ...
Joan Francesc Munoz-Martin, Nereida Rodriguez-Alvarez, Xavier Bosch-Lluis, Kamal Oudrhiri   +3 more
doaj   +1 more source

Maritime Multiple Moving Target Detection Using Multiple-BDS-Based Radar: Doppler Phase Compensation and Resolution Improvement

Remote Sensing, 2021
With the realization of global navigation satellite system (GNSS) completion, GNSS reflectometry (GNSS-R) has become increasingly popular due to the advantages of global coverage and the availability of multiple sources in terms of earth remote sensing ...
Xiang Lan, Liuying Wang, Jinxing Li, Wangqiang Jiang, Min Zhang   +4 more
doaj   +1 more source