Results 1 to 10 of about 15,182,981 (294)

Space-Borne GNSS-R Ionospheric Delay Error Elimination by Optimal Spatial Filtering [PDF]

open access: yesSensors, 2020
Global Navigation Satellite System Reflectometry (GNSS-R) technology is a new and promising remote sensing technology, especially satellite-based GNSS-R remote sensing, which has broad application prospects. In this work, the ionospheric impacts on space-
Qiuyang Zhang, Yang Liu, Junming Xia
doaj   +2 more sources

Low-Cost GNSS-R Altimetry on a UAV for Water-Level Measurements at Arbitrary Times and Locations [PDF]

open access: yesSensors, 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   +2 more sources

FY3E GNOS II GNSS Reflectometry: Mission Review and First Results

open access: yesRemote Sensing, 2022
FengYun-3E (FY3E), launched on 5 July 2021, is one of China’s polar-orbiting meteorological satellite series. The GNOS II onboard FY3E is an operational GNSS remote sensor that for the first time combines GNSS radio occultation (GNSS RO) and GNSS ...
Feixiong Huang   +2 more
exaly   +3 more sources

Simulation of Multi-satellite GNSS Reflected Signals and Design of Simulator [PDF]

open access: yesJournal of Geodesy and Geoinformation Science, 2021
Using GNSS-R technology for remote sensing of surface parameters has become a new trend in the field of remote sensing. With the rapid development of GNSS-R technology, GNSS-R simulation has become one of the new hot spots. Now the researches of the GNSS-
Bowen LI,Dongkai YANG,Bo ZHANG
doaj   +1 more source

Signal-to-Noise Ratio Analyses of Spaceborne GNSS-Reflectometry from Galileo and BeiDou Satellites

open access: yesRemote Sensing, 2021
In recent years, Global Navigation Satellite System Reflectometry (GNSS-R) technology has made considerable progress with the increasing of GNSS-R satellites in orbit, the improvements of GNSS-R data processing technology, and the expansion of its ...
Yang Nan   +5 more
doaj   +1 more source

SNR-Based GNSS-R for Coastal Sea-Level Altimetry

open access: yesGeosciences, 2021
Geodetic Global Navigation Satellite System reflectometry (GNSS-R) uses ground-based signals of opportunity to retrieve sea levels at an intermediate spatial scale.
Sajad Tabibi   +4 more
doaj   +1 more source

An Innovative Signal Processing Scheme for Spaceborne Integrated GNSS Remote Sensors

open access: yesRemote Sensing, 2023
The vigorous development of the global navigation satellite system (GNSS) has led to a boom in GNSS radio occultation (GNSS RO) and GNSS reflectometry (GNSS-R) techniques.
Tongsheng Qiu   +12 more
doaj   +1 more source

Estimativa da Umidade do Solo por Refletometria GNSS: uma Revisão Conceitual

open access: yesRevista Brasileira de Cartografia, 2021
O monitoramento da umidade do solo possibilita o manejo e uso eficiente de recursos hídricos, sendo uma atividade importante em diversas áreas, tais como: no monitoramento de áreas de risco; delimitação de áreas suscetíveis a enchentes; atividades da ...
Jorge Felipe Euriques   +4 more
doaj   +1 more source

Improving the Pulse-Limited Footprint Resolution of GNSS-R Based on the Novel Joint Bandwidth Method

open access: yesRemote Sensing, 2023
The bistatic global navigation satellite system’s (GNSS) signal reflection technology has become an effective means of space-based sea surface wind field retrieval and height retrieval.
Zhen Cui   +9 more
doaj   +1 more source

Impact of the Initial State on BDS Real-Time Orbit Determination Filter Convergence

open access: yesRemote Sensing, 2018
High precision real-time orbit of navigation satellites are usually predicted based on batch estimation solutions, which is highly dependent on the accuracy of the dynamic model.
Yun Qing   +4 more
doaj   +1 more source

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