Showing 2,361 - 2,380 results of 2,648 for search '"satellites"', query time: 0.05s Refine Results
  1. 2361

    Identification of dominant species of submerged vegetation based on Sentinel-2 red-edge band: A case study of Lake Erhai, China by Xiaohan Wang, Yu Zhang, Yanhong Yu, Yunmei Li, Heng Lyu, Junda Li, Xiaolan Cai, Xianzhang Dong, Gaolun Wang, Jianzhong Li, Mengmeng Song, Lanlan Chen

    Published 2025-02-01
    “…In this study, Sentinel-2 satellite data was employed to examine and compare the spectral attributes of three preeminent species, Potamogeton maackianus, Vallisneria natans, and Ceratophyllum demersum, within the confines of the Lake Erhai study area. …”
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  2. 2362

    A long-term analysis of oxidant (OX = O3 + NO2) and its local and regional levels in Tehran, Iran, a high NOx-saturated condition by Ahmad Taheri, Babak Khorsandi, Mohammad Reza Alavi Moghaddam

    Published 2025-01-01
    “…This study investigates OX trends and its local and regional levels in Tehran, Iran using the data from 21 monitoring stations from 2012 to 2022 and satellite remote sensing data (TROPOMI) for 2022. The spatiotemporal trends of O3, NO2, and OX are first examined using ground-based and remote sensing data, and then the polar plots are employed to identify the dominant directions of OX transport and its sources. …”
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  3. 2363

    Scan Mirror Assembly for the Multispectral Scanning Polarimeter of Aerosol-UA Space Mission by Ivan Syniavskyi, Yevgen Oberemok, Yuriy Ivanov, Mikhail Sosonkin, Vladimir Kireyev, Konstantin Akinin

    Published 2021-01-01
    “…This control system tolerates movements of the orbiting satellite and preserves invariability of its spatial position. …”
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  4. 2364

    Model calculation of a radio communication line based on remote sensing data by Andrey T. Albuzov, Pavel E. Shakhov, Vladimir I. Filatov

    Published 2024-12-01
    “…The main purpose of the work is determined by the need to develop algorithms and software implementation of the tool, which will eventually allow, given the characteristics of the hardware, to promptly and adequately analyze the possibility and evaluate the parameters for organizing stable radio communications even at the planning stage using interactive satellite maps. Methods. The article presents the developed algorithms and screenshots of the implementation of the program for calculating the interference effect of the relief, taking into account the underlying surface in the radio communication interval. …”
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  5. 2365

    Comparative Assessment of the Effect of Positioning Techniques and Ground Control Point Distribution Models on the Accuracy of UAV-Based Photogrammetric Production by Muhammed Enes Atik, Mehmet Arkali

    Published 2024-12-01
    “…These systems are capable of providing highly accurate products through integrated advanced technologies, including a digital camera, inertial measurement unit (IMU), and Global Navigation Satellite System (GNSS). UAVs are a cost-effective alternative to traditional aerial photogrammetry, and recent advancements demonstrate their effectiveness in many applications. …”
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  6. 2366

    Role of Barystatic Sea Level Change in Global Mass Conservation and Its Excitation to Length‐Of‐Day Variations by Qiqi Shi, Yonghong Zhou, Cancan Xu, Xueqing Xu

    Published 2025-01-01
    “…LOD mass term contributions derived from GRACE/GFO mass estimates considering global mass conservation show high consistency with satellite laser ranging results and are much closer to geodetic LOD observations than EAM products at seasonal and non‐seasonal time scales. …”
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  7. 2367

    PSiamRML: Target Recognition and Matching Integrated Localization Algorithm Based on Pseudo-Siamese Network by Jiwei Fan, Xiaogang Yang, Ruitao Lu, Xueli Xie, Siyu Wang

    Published 2023-01-01
    “…The disappearance of satellite signals makes it challenging to achieve accurate positioning. …”
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    Article
  8. 2368

    Exploration of aerosol-precipitation relationships under different climate regimes in China by Yuanyuan Xiao, Jun Zhang, Jingxuan Zhu, Qiang Dai

    Published 2025-12-01
    “…The aerosol data were obtained from the second Modern-Era Retrospective analysis for Research and Applications (MERRA-2), the precipitation data were sourced from Integrated Multi-satellitE Retrieval for Global Precipitation Measurement (GPM-IMERG) and rainfall microphysical data were collected from the GPM Dual-Frequency Precipitation Radar (GPM-DPR). …”
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  9. 2369

    Effects of 15th January 2010 Annular Solar Eclipse on Traveling Ionospheric Disturbances and Equatorial Plasma Bubbles over Low Latitude Regions of East Africa by Davis Odhiambo Athwart, Boniface Ndinya, Paul Baki

    Published 2022-01-01
    “…The influence of the 15th January 2010 annular solar eclipse on traveling ionospheric disturbances (TIDs) and equatorial plasma bubbles (EPBs) is studied using data from six global navigation and satellite system (GNSS) receivers spread across the path of annularity over the low latitude region of East Africa. …”
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  10. 2370

    Transformer-Based Ionospheric Prediction and Explainability Analysis for Enhanced GNSS Positioning by He-Sheng Wang, Dah-Jing Jwo, Yu-Hsuan Lee

    Published 2024-12-01
    “…This study aims to investigate the impact of ionospheric models on Global Navigation Satellite System (GNSS) positioning and proposes an ionospheric prediction method based on a Transformer deep learning model. …”
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  11. 2371

    Spatiotemporal Changes in Water-Use Efficiency of China’s Terrestrial Ecosystems During 2001–2020 and the Driving Factors by Jia He, Yuxuan Zhou, Xueying Liu, Wenjing Duan, Naiqing Pan

    Published 2025-01-01
    “…It provides a comprehensive reflection of ecosystems’ responses to various environmental factors, making it essential for understanding how ecosystems adapt to complex environmental changes. Using satellite-based estimates of gross primary productivity (GPP) and evapotranspiration (ET), our study investigated the spatiotemporal variations in WUE across China’s terrestrial ecosystems from 2001 to 2020. …”
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  12. 2372

    Assessment of COVID-19 Impacts on Air Quality in Ulaanbaatar, Mongolia, Based on Terrestrial and Sentinel-5P TROPOMI Data by Gantuya Ganbat, Halim Lee, Hyun-Woo Jo, Batbayar Jadamba, Daniel Karthe

    Published 2022-08-01
    “…Abstract The study aims to reveal the impact of three sequential strict-lockdowns of COVID-19 measures on the air pollutants including NO2, SO2, PM10, and PM2.5 in Ulaanbaatar, Mongolia during November 2020–February 2021 based on air quality network and satellite data. Based on measurements of automatic air quality sites in Ulaanbaatar, we found a substantial decrease in NO2 (up to 45%), PM10 (72%), and PM2.5 (59%) compared to the same periods in the previous five years. …”
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  13. 2373

    Over 20‐Year Global Magnetohydrodynamic Simulation of Earth's Magnetosphere by Ilja Honkonen, Max van deKamp, Theresa Hoppe, Kirsti Kauristie

    Published 2022-11-01
    “…As input we use 16‐s resolution magnetic field and 1‐min plasma measurements by Advanced Composition Explorer satellite from 1998 to 2020. The modeled interval is divided into 28 hr simulations including 4 hr overlap. …”
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  14. 2374

    Benchmarking of snow water equivalent (SWE) products based on outcomes of the SnowPEx+ Intercomparison Project by L. Mudryk, C. Mortimer, C. Derksen, A. Elias Chereque, P. Kushner

    Published 2025-01-01
    “…Finally, we demonstrate that, for the ensemble of products evaluated here, attempts to assimilate surface snow observations and/or satellite measurements lead to a deleterious influence on regional snow mass trends, which is an important consideration for how such gridded products are produced and applied in the future.…”
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  15. 2375

    Assessment of Radiometric Calibration Consistency of Thermal Emissive Bands Between Terra and Aqua Moderate-Resolution Imaging Spectroradiometers by Tiejun Chang, Xiaoxiong Xiong, Carlos Perez Diaz, Aisheng Wu, Hanzhi Lin

    Published 2025-01-01
    “…The calibration consistency between the satellite measurements from the two instruments is essential in generating a multi-year data record for the long-term monitoring of the Earth’s Level 1B (L1B) data. …”
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  16. 2376

    Validation of Simulated Statistical Characteristics of Magnetosphere‐Ionosphere Coupling in Global Geospace Simulations Over an Entire Carrington Rotation by Qianfeng Yin, Kevin H. Pham, Junjie Chen, Binzheng Zhang

    Published 2024-06-01
    “…The distribution of the simulated Alfvénic Poynting flux is consistent with that observed by the FAST satellite in the dispersive Alfvén wave regime. These M‐I coupling characteristics are also binned by the Kp indices, indicating that the Kp dependence of these patterns in the M‐I model is more effective than the empirical models within the Carrington Rotation. …”
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  17. 2377

    Seasonal Tree Height Dynamic Estimation Using Multi-source Remotely Sensed Data in Shenzhen by Hang Song, Xuemei Zhang, Ting Hu, Jinglei Liu, Bing Xu

    Published 2025-01-01
    “…In this study, we utilized light detection and ranging and satellite data to extract spectral, vegetation, texture, polarization, terrain, and season features. …”
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  18. 2378

    Asymptomatic Plasmodium Parasites among Adults in Eastern Uganda: A Case of Donor Blood Screening at Mbale Regional Blood Bank by Simon Peter Inyimai, Mosses Ocan, Benjamin Wabwire, Peter Olupot-Olupot

    Published 2018-01-01
    “…In this study, we estimated the prevalence of Plasmodium parasites in donor blood units at Mbale Regional Blood Bank (Mbale RBB), a satellite centre of the Uganda Blood Transfusion Service (UBTS). …”
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  19. 2379

    Web GIS Based Benthic Habitat Mapping Update Supports Smart Island Lemukutan by Zan Zibar, Robin Saputra, Adityo Raynaldo, Supriyatno Supriyatno

    Published 2025-01-01
    “…In the last decade, object-based image analysis (OBIA) has been accepted as an effective method for extracting and classifying information from high spatial resolution satellite imagery. Our study's goal is to use WebGIS to combine coral reef monitoring data from Lemukutan Island and find out how much coral cover there is on the island using the smart island WebGIS. …”
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  20. 2380

    The effect of COVID-19 lockdown on the air environment in India by N. Gupta, A. Tomar, V. Kumar

    Published 2020-08-01
    “…The work involves the refining and preprocessing of raw data of this year and last year of various harmful pollutants present in the environment along with satellite images from National Aeronautics and Space Administration for comparison of different parameters. …”
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