Results 41 to 50 of about 847,572 (191)

Monitoring global climate change using GNSS radio occultation

npj Climate and Atmospheric Science, 2022
The emerging signal of climate change is now clearly evident in Global Navigation Satellite System (GNSS) radio occultation (RO) data, matching predictions made by climate models 15 years ago. The observed RO trends represent well-understood responses to
Hans Gleisner, Mark A. Ringer, Sean B. Healy   +2 more
doaj   +1 more source

Analysis of Satellite Radio Occultation Architecture and its Stakeholders

, 2021
Global Navigation Satellite System Radio Occultation (GNSS-RO) is a technique that relies on the change of a signal transmitted from a Global Navigation Satellite System (GNSS) as it passes through the planet’s atmosphere.
I. Josue Tapia-Tamayo, Paul T. Grogan, Tapia-Tamayo, I. Josue, Grogan, Paul T.   +3 more
core   +1 more source

Commercial GNSS Radio Occultation on Aerial Platforms With Off-The-Shelf Receivers

Navigation, 2022
In recent decades, GNSS radio occultation (RO) soundings have proven to be an invaluable input to global weather forecasting. The success of government programs such as COSMIC is now complemented by commercial low-cost cubesats.
Bryan C. Chan, Ashish Goel, Jonathan Kosh, Tyler G. R. Reid, Corey R. Snyder, Paul M. Tarantino, Saraswati Soedarmadji, Widyadewi Soedarmadji, Kevin Nelson, Feiqin Xie, Michael Vergalla   +10 more
doaj   +1 more source

GNSS Radio Occultation Constellation Observing System Experiments

Monthly Weather Review, 2014
Abstract Observing system experiments within the operational ECMWF data assimilation framework have been performed for summer 2008 when the largest recorded number of Global Navigation Satellite System (GNSS) radio occultation observations from both operational and experimental satellites were available.
Bauer, Peter, Radnóti, G., Healy, Sean, Cardinali, Carla   +3 more
openaire   +1 more source

FY3E GNOS II GNSS Reflectometry: Mission Review and First Results

Remote 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 ...
Guanglin Yang, Weihua Bai, Jinsong Wang, Xiuqing Hu, Peng Zhang, Yueqiang Sun, Na Xu, Xiaochun Zhai, Xianjun Xiao, Junming Xia, Feixiong Huang, Cong Yin, Qifei Du, Xianyi Wang, Yuerong Cai, Xiangguang Meng, Guangyuan Tan, Peng Hu, Congliang Liu   +18 more
doaj   +1 more source

Location of Ionospheric Irregularities in Extended GNSS-RO Measurements Using Back Propagation Method

, 2023
Besides providing electron density profiles (EDP), GNSS Radio Occultation (GNSS-RO) measurements allow monitoring the frequency and the areas where ionospheric scintillations occur.
Pettersson, Mats, Rasch, Joel,, Rasch, Joel, Ludwig Barbosa, Vinícius, Christensen, Jacob,, Ludwig Barbosa, Vinícius,, Carlstrom, Anders, Vu, Viet Thuy,, Carlstrom, Anders,, Christensen, Jacob, Pettersson, Mats,, Vu, Viet Thuy   +11 more
core   +1 more source

“Cookie”: A Satellite Concept for GNSS Remote Sensing Constellations

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2016
This paper presents a concept, “Cookie,” for a satellite particularly suited for dense spatial sampling by future Global Navigation Satellite Systems (GNSS) remote sensing constellations.
Manuel Martin-Neira, Weiqiang Li, Ana Andres-Beivide, Xabier Ballesteros-Sels   +3 more
doaj   +1 more source

Balloon-borne software defined receiver for GNSS radio occultation measurements. ROMULUS experiment

, 2022
The aim of the experiment "Radio Occultation Miniaturized Unit for Leo and Upper Stratosphere" (ROMULUS) is to test the performance of a low-cost balloon-borne Software Defined Receiver (SDR) for GNSS Radio Occultation (GNSS-RO) soundings.
Lorenzo Rossi, Flavio Pasquale, Alessandro Rossi, Giuseppe Morichetti, Gabriele Agresti, Elisa Depaolis, Ariele Zurria, Fabio Santoni, Elena Valant, Fabrizio Piergentili, Clara Di Nunzio, Gabriele Boccacci, Paolo Marzioli, Damiano Porpora, Linda Misercola   +14 more
core   +1 more source

An Innovative Signal Processing Scheme for Spaceborne Integrated GNSS Remote Sensors

Remote 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, Xianyi Wang, Yueqiang Sun, Fu Li, Zhuoyan Wang, Junming Xia, Qifei Du, Weihua Bai, Yuerong Cai, Dongwei Wang, Cheng Liu, Hao Qiao, Feixiong Huang   +12 more
doaj   +1 more source

Electron Density Retrieval From Truncated Radio Occultation GNSS Data [PDF]

Journal of Geophysical Research: Space Physics, 2019
AbstractThis paper summarizes the definition and validation of two complementary new strategies, to invert incomplete Global Navigation Satellite System Radio‐Occultation (RO) ionospheric measurements, such as the ones to be provided by the future EUMETSAT Polar System Second Generation.
Haixia Lyu, Manuel Hernández‐Pajares, Enric Monte‐Moreno, Estel Cardellach   +3 more
openaire   +3 more sources