Results 11 to 20 of about 3,815 (246)

GNSS interferometric reflectometry signature‐based defense [PDF]

NAVIGATION, 2020
Résumé Les signaux du système mondial de navigation par satellite (GNSS) sont vulnérables aux interférences radiofréquence (RFI) et à l'usurpation d'identité. La détection RFI est devenue triviale avec de nombreux algorithmes de détection disponibles et intégrés dans les récepteurs GNSS ; ce n'est pas le cas avec l'usurpation d'identité.
Steven W. Lewis, C. Edward Chow, Felipe Geremia‐Nievinski, Dennis M. Akos, Sherman Lo   +4 more
openaire   +2 more sources

GNSS Reflectometry-Based Ocean Altimetry: State of the Art and Future Trends [PDF]

Remote Sensing
For the past 20 years, Global Navigation Satellite System reflectometry (GNSS-R) technology has successfully shown its potential for remote sensing of the Earth’s surface, including ocean and land surfaces.
Tianhe Xu, Nazi Wang, Yunqiao He, Yunwei Li, Xinyue Meng, Fan Gao, Ernesto Lopez-Baeza   +6 more
doaj   +2 more sources

Polarimetric instrument Global Navigation Satellite System - Reflectometry airborne data [PDF]

Data in Brief
In this paper, three datasets are described. The first dataset is a complete set of GNSS-R (GNSS-R: Global Navigation Satellite System – Reflectometry) airborne data.
Karin Dassas, Pascal Fanise, Michel Le Page, Emna Ayari, Philippe Baillion, Mateo Sige, Aaron Boone, Mehrez Zribi   +7 more
doaj   +2 more sources

Signal Processing for GNSS Reflectometry

, 2023
Global Navigation Satellite Systems (GNSS) Reflectometry, or GNSS-R, is the study of GNSS signals reflected from the Earth’s surface. These so-called signals of opportunity, usually seen as a nuisance in standard navigation applications, contain meaningful information on the nature and relative position of the reflecting surface.
Corentin Lubeigt
openaire   +3 more sources

Lake Altimetry Using Long Coherent Integration Carrier Phase Measurements from Airborne GNSS Reflectometry

Remote Sensing, 2023
Today, land and ocean observations are crucial for monitoring climate change. The method of GNSS reflectometry is an opportunistic way to provide low-cost observations of many geophysical parameters.
Nolan Varais, Jérôme Verdun, José Cali, Laurent Lestarquit   +3 more
doaj   +1 more source

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

Inversion Method of Tidal Level Based on GNSS Triple-Frequency, Geometry-Free, Non-Ionospheric Phase Combination

Applied Sciences, 2022
Using the navigation signal transmitted by GNSS (global navigation satellite system), satellites for tide level monitoring comprise one of the important research fields of GNSS marine remote sensing.
Gaochong You, Hang Guo, Jianfeng Wu, Min Yu   +3 more
doaj   +1 more source

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