Browsing NTNU Open by Author "Hoseini, Mostafa"
Now showing items 1-20 of 20
-
Assessment of GNSS Reflectometry's Capability to Predict the Global Distribution of Floating Ocean Microplastics
Kok, Syver Stenersen (Master thesis, 2022)Plastikkforurensing i havet påvirker maritimt liv og kan spores videre til mange deler av næringskjeden. Det er vanskelig å nøyaktig anslå hvor store skader økosystemet tar av mikroplastforurensingen av verdenshavene. Nylig ... -
Evaluation of CYGNSS Observations for Flood Detection and Mapping during Sistan and Baluchestan Torrential Rain in 2020
Rajabi, Mahmoud; Nahavandchi, Hossein; Hoseini, Mostafa (Peer reviewed; Journal article, 2020)Flood detection and produced maps play essential roles in policymaking, planning, and implementing flood management options. Remote sensing is commonly accepted as a maximum cost-effective technology to obtain detailed ... -
First Evidence of Mesoscale Ocean Eddies Signature in GNSS Reflectometry Measurements
Hoseini, Mostafa; Asgarimehr, Milad; Zavorotny, valery; Nahavandchi, Hossein; Ruf, chris; Wickert, Jens (Journal article; Peer reviewed, 2020)Feasibility of sensing mesoscale ocean eddies using spaceborne Global Navigation Satellite Systems-Reflectometry (GNSS-R) measurements is demonstrated for the first time. Measurements of Cyclone GNSS (CYGNSS) satellite ... -
Homogenizing GPS Integrated Water Vapor Time Series: Benchmarking Break Detection Methods on Synthetic Data Sets
Van Malderen, Roeland; Pottiaux, E.; Klos, A.; Domonkos, P.; Elias, M.; Ning, T.; Bock, O.; Guijarro, J.; Alshawaf, F.; Hoseini, Mostafa; Quarello, A.; Lebarbier, E.; Chimani, B.; Tornatore, V.; Zengin Kazancı, S.; Bogusz, J. (Peer reviewed; Journal article, 2020)We assess the performance of different break detection methods on three sets of benchmark data sets, each consisting of 120 daily time series of integrated water vapor differences. These differences are generated from the ... -
Improving tropospheric corrections on large-scale Sentinel-1 interferogramsusing a machine learning approach for integration with GNSS-derived zenithtotal delay (ZTD)
Shamshiri, Roghayeh; Motagh, Mahdi; Nahavandchi, Hossein; Haghshenas, Mahmud; Hoseini, Mostafa (Peer reviewed; Journal article, 2020)Sentinel-1 mission with its wide spatial coverage (250 km), short revisit time (6 days), and rapid data dissemination opened new perspectives for large-scale interferometric synthetic aperture radar (InSAR) analysis. ... -
A new hybrid method to improve the ultra-short-term prediction of LOD
Modiri, Sadegh; Belda, Santiago; Hoseini, Mostafa; Heinkelmann, Robert; Ferrandiz, Jose M; Schuh, Harald (Peer reviewed; Journal article, 2020)Accurate, short-term predictions of Earth orientation parameters (EOP) are needed for many real-time applications including precise tracking and navigation of interplanetary spacecraft, climate forecasting, and disaster ... -
On the Feasibility of Real-time Sea Level Monitoring using Ground-based GNSS-Reflectometry Measurements
Leikvoll, Magnus (Master thesis, 2020)GNSS Reflektometri (GNSS-R) er en fjernmålingsteknikk som har fått mye oppmerksomhet i nyere tid. I denne avhandlingen blir teorien bak GNSS reflektometri presentert, og et eksperiment er gjennomført for å vurdere mulighetene ... -
On the Remote Sensing of the Atmosphere and Ocean Using Direct and Reflected GNSS Signals
Hoseini, Mostafa (Doctoral thesis, 2022)The Global Navigation Satellite Systems (GNSS) signals have shown great potential for remote sensing applications. The ubiquitous GNSS signals in direct or reflected geometry can be processed to retrieve different geophysical ... -
On the Response of Polarimetric GNSS-Reflectometry to Sea Surface Roughness
Hoseini, Mostafa; Semmling, Maximilian; Nahavandchi, Hossein; Rennspiess, Erik; Ramatschi, Markus; Haas, Rüdiger; Strandberg, Joakim; Wickert, Jens (Journal article; Peer reviewed, 2021)Reflectometry of Global Navigation Satellite Systems (GNSS) signals from the ocean surface has provided a new source of observations to study the ocean-atmosphere interaction. We investigate the sensitivity and performance ... -
A Performance Assessment of Polarimetric GNSS-R Sea Level Monitoring in the Presence of Sea Surface Roughness
Rajabi, Mahmoud; Hoseini, Mostafa; Nahavandchi, Hossein; Semmling, Maximilian; Ramaschi, Markus; Goli, Mehdi; Hass, R ̈udiger; Wickert, Jens (Peer reviewed; Journal article, 2021)Monitoring coastal sea level has gained a large socioeconomic and environmental significance. Ground-based Global Navigation Satellite System Reflectometry (GNSS-R) offers various geophysical parameters including sea surface ... -
Polar motion prediction using the combination of SSA and Copula-based analysis
Modiri, Sadegh; Belda, Santiago; Heinkelmann, Robert; Hoseini, Mostafa; Ferrandiz, Jose M; Schuh, Harald (Journal article; Peer reviewed, 2018)The real-time estimation of polar motion (PM) is needed for the navigation of Earth satellite and interplanetary spacecraft. However, it is impossible to have real-time information due to the complexity of the measurement ... -
Polarimetric GNSS-R Sea Level Monitoring using I/Q Interference Patterns at Different Antenna Configurations and Carrier Frequencies
Rajabi, Mahmoud; Hoseini, Mostafa; Nahavandchi, Hossein; Semmling, Maximillian; Ramatschi, Markus; Goli, Mehdi; Haas, Rudiger; Wickert, Jens (Peer reviewed; Journal article, 2021)Coastal sea level variation as an indicator of climate change is extremely important due to its large socioeconomic and environmental impacts. The ground-based global navigation satellite system (GNSS)-reflectometry (GNSS-R) ... -
The potential of spaceborne GNSS reflectometry for detecting ocean surface currents
Hoseini, Mostafa; Nahavandchi, Hossein (Peer reviewed; Journal article, 2022)The detectability of ocean surface currents in global navigation satellite system reflectometry (GNSS-R) observations is analyzed. We use a large dataset of spaceborne GNSS-R measurements from NASA cyclone GNSS (CYGNSS) ... -
Remote Sensing of Precipitation Using Reflected GNSS Signals: Response Analysis of Polarimetric Observations
Asgarimehr, Milad; Hoseini, Mostafa; Semmling, Maximilian; Ramatschi, Markus; Camps, Adriano; Nahavandchi, Hossein; Haas, Rüdiger; Wickert, Jens (Journal article; Peer reviewed, 2021)For the first time, rain effects on the polarimetric observations of the global navigation satellite system reflectometry (GNSS-R) are investigated. The physical feasibility of tracking the modifications in the surface ... -
Remote Sensing of Soil Moisture Using GNSS Reflectometry
Haneberg, Vegard; Rindal, Mads Engja (Master thesis, 2022)Forsterkende konsekvenser av klimaendringer fremhever behovet for overvåkning av jordens vannsykler over land, spesielt sett i sammenheng med økningen av naturkatastrofer som flom og tørke. Denne studien presenterer en ny ... -
Remote Sensing of Soil Moisture Using GNSS Reflectometry
Rindal, Mads Engja; Haneberg, Vegard (Master thesis, 2022)Forsterkende konsekvenser av klimaendringer fremhever behovet for overvåkning av jordens vannsykler over land, spesielt sett i sammenheng med økningen av naturkatastrofer som flom og tørke. Denne studien presenterer en ny ... -
The Application of Spaceborne GNSS-Reflectometry for the Study of Ocean Microplastics
Strand, Andreas Gaustadnes (Master thesis, 2021)Fra produksjonen av oksygen, mat og medisin til transport og maritim økonomi, spiller verdenshavene en avgjørende rolle i det menneskelige samfunn. Over flere tiår har fjernmåling satellitter overvåket havene ved hjelp av ... -
Tidal harmonics retrieval using GNSS-R dual-frequency complex observations
Rajabi, Mahmoud; Hoseini, Mostafa; Nahavandchi, Hossein; Asgarimehr, Milad; Semmling, Maximilian; Ramatschi, Markus; Goli, Mehdi; Wickert, Jens (Peer reviewed; Journal article, 2023)Tidal analysis and methods for estimation and prediction of ocean tidal constitutes are essential in a large area of scientific disciplines, for example, navigation, onshore and offshore engineering, and production of green ... -
Towards a zero-difference approach for homogenizing GNSS tropospheric products
Hoseini, Mostafa; Alshawaf, Fadwa; Nahavandchi, Hossein; Dick, Galina; Wickert, Jens (Peer reviewed; Journal article, 2020)A data homogenization method based on singular spectrum analysis (SSA) was developed and tested on real and simulated datasets. The method identifies abrupt changes in the atmospheric time series derived from Global ... -
Towards understanding the interconnection between celestial pole motion and earth’s magnetic field using space geodetic techniques
Modiri, Sadegh; Heinkelmann, Robert; Belda, Santiago; Malkin, Zinovy; Hoseini, Mostafa; Korte, Monika; Ferrándiz, José M.; Schuh, Harald (Peer reviewed; Journal article, 2021)The understanding of forced temporal variations in celestial pole motion (CPM) could bring us significantly closer to meeting the accuracy goals pursued by the Global Geodetic Observing System (GGOS) of the International ...