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1421
The Investigation of Global Real-Time ZTD Estimation from GPS/Galileo PPP Based on Galileo High Accuracy Service
Published 2024-12-01“…Firstly, the accuracy of satellite orbit and clock products of the HAS GPS and HAS Galileo system are evaluated. …”
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1422
Tracking over 30 years of coral reef infrastructure degradation in Barbados
Published 2025-01-01“…Our results underscore the urgency of monitoring reef health and highlight the potential limitations of satellite assessment. This research enhances understanding of reef dynamics and offers a framework for identifying vulnerable areas, which are crucial for effective conservation efforts.…”
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1423
Mechanics Design of Conical Spiral Structure for Flexible Coilable Antenna Array
Published 2022-01-01“…The above findings have potential applications in the effective reduction of antenna array weight and satellite launch costs.…”
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1424
Climatology of Total Cloudiness in the Arctic: An Intercomparison of Observations and Reanalyses
Published 2012-01-01“…Total cloud fraction over the Arctic (north of 60°N) has been evaluated and intercompared based on 16 Arctic cloud climatologies from different satellite and surface observations and reanalyses. …”
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1425
An Alternating Variable Step-Size Adaptive Long-Range Prediction of LMS Fading Signals
Published 2015-02-01“…Firstly, we establish the Gilbert-Elliot channel model based on first-order Markov chain for satellite communication downlink and take advantage of smoothing average to obtain channel observed values. …”
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1426
On the Performance of a Real‐Time Electron Radiation Belt Specification Model
Published 2024-12-01“…Abstract Maintaining accurate real‐time hindcast and forecast specification of the radiation environment is essential for operators to monitor and mitigate the effects of hazardous radiation on satellite components. The Radiation Belt Forecasting Model and Framework (RBFMF) provides real‐time forecasts and hindcasts of the electron radiation belt environment, which are used as inputs for the Satellite Charging Assessment Tool. …”
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1427
Characterization of paleodrainages in desert regions of Saudi Arabia multisatellite images with field based study
Published 2025-02-01“…This study investigated these features primarily based on the integration of multi-satellite images including SRTM DEM for generating stream networks, ALOS-PALSAR which is capable to penetrate the surficial materials, and ASTER for detecting thermal differentiation in terrain surface. …”
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1428
Statistical Characterization of GITM Thermospheric Horizontal Winds in Comparison to GOCE Estimations
Published 2022-03-01“…The mechanisms and drivers that underlie the physics of thermospheric horizontal winds remain under investigation and, to date, no comprehensive statistical study between thermospheric winds generated by a physics‐based atmospheric model and those retrieved from satellite measurements has been performed. Comparisons between cross‐track horizontal winds from a 10‐month run of Global Ionosphere‐Thermosphere (GITM) and those derived from the Gravity field and steady‐state Ocean Circulation Explorer (GOCE) satellite show that GITM did best modeling horizontal winds in the polar zone but overestimated horizontal wind speeds at midlatitudes just outside of the equatorial ionization anomaly region. …”
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1429
The Error of Global Ionospheric Map‐TEC During Equatorial Plasma Bubble Event in the High Solar Activity Year
Published 2024-06-01“…The frequently‐used assessment parameter of ionospheric TEC model, namely difference of Slant TEC (difference of slant total electron content (dSTEC)) is checked and employed based on eight global navigation satellite system (GNSS) stations distributed around the geomagnetic equator during the high solar activity year of 2014. …”
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1430
Validation of the New Algorithm for Rain Rate Retrieval from AMSR2 Data Using TMI Rain Rate Product
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1431
GA-ARMA Model for Predicting IGS RTS Corrections
Published 2017-01-01“…The global navigation satellite system (GNSS) is widely used to estimate user positions. …”
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1432
Comparison and Analysis of Matching patterns using Simulation with Subsurface Navigation Approach Based on Magnetic Maps
Published 2024-03-01“…Today, the widespread use of satellite equipment to determine the location of objects or persons is done in a commercial and common way. …”
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1433
Inland Water Body Fraction Map for Canada and Adjacent Regions at 250-m Spatial Resolution
Published 2025-12-01“…This dataset provides a more precise and up-to-date tool for medium-resolution studies of surface inland water in Canada, aligning closely with satellite imagery of similar spatial resolution. The dataset is freely available through the Government of Canada’s Open Government Portal.…”
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1434
TerraSAR-X SAR data for classification of ice-free areas and glacier facies on Fildes Peninsula, King George Island, Antarctica
Published 2025-01-01“…We used five images from the TerraSAR-X satellite, three of these data were obtained during the same period of fieldwork. …”
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1435
The Social Return on Investment in programs designed for young people living with a family member who experiences mental health challenges: study protocol
Published 2025-01-01“…The purpose of this paper is to describe the protocol for the evaluation of programs offered by the Satellite Foundation, designed for, and with, children and young people aged between 8 and 25 years who have family members experiencing mental health challenges. …”
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1436
Measuring and modelling functional moat area in perennially ice-covered Lake Fryxell, Antarctica
Published 2024-12-01“…Finally, we developed a predictive model based on readily available climate data, allowing moat area to be predicted beyond the limits of the satellite-based records. We found that functional moat area varies annually, potentially influencing ecosystem processes in the moats.…”
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1437
Vehicle positioning systems in tunnel environments: a review
Published 2025-01-01“…In the tunnel, the positioning accuracy of Global Navigation Satellite System (GNSS) decreases due to blocked satellite signals. …”
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1438
UAV Localization Method with Keypoints on the Edges of Semantic Objects for Low-Altitude Economy
Published 2024-12-01“…The localization accuracy of UAVs highly relies on the Global Navigation Satellite System (GNSS), which can be easily affected in low-altitude urban environments, making it difficult to maintain effective localization accuracy. …”
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1439
Exploring the feasibility of GF1-WFV data in estimating SPAD using spatiotemporal fusion algorithms
Published 2025-05-01“…Given the challenges associated with satellite image quality and spatiotemporal resolution, spatiotemporal fusion algorithms for estimating vegetation chlorophyll content have garnered significant attention in recent years. …”
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1440
Separation algorithm of paired carrier multiple access based on independent component analysis
Published 2006-01-01“…Based on the introduction of paired carrier multiple access(PCMA)technology,a new algorithm was proposed to separate the satellite PCMA downlink mixed signals with independent component analysis(ICA).The new algorithm utilized maximum negentropy as the separating criterion which could overcome the limitation that the power of two up-link signals could not be different too much.The computer simulations testified the validity of the algorithm.…”
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