Showing 81 - 100 results of 154 for search '"Global Positioning System"', query time: 0.08s Refine Results
  1. 81

    A Smart Electronic Tagging System Based on Context Awareness and Machine-to-Machine Interworking by Gil-Yong Lee, Nam-Yeol Yun, Sung-Chul Lee, Soo-Hyun Park

    Published 2013-10-01
    “…The existing electronic tagging system traces the location of a sex offender using triangulation by communicating with Global Positioning System (GPS) satellites and mobile phone base stations. …”
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  2. 82

    Analysis and Simulation of Intervention Strategies against Bus Bunching by means of an Empirical Agent-Based Model by Wei Liang Quek, Ning Ning Chung, Vee-Liem Saw, Lock Yue Chew

    Published 2021-01-01
    “…The EMB model is an agent-based model which utilizes the positional and temporal data of the buses obtained from the Global Positioning System (GPS) to constitute (1) a set of empirical velocity distributions of the buses and (2) a set of exponential distributions of interarrival time of passengers at the bus stops. …”
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  3. 83

    Geoelectrical Characterization of Aquifer Precincts in Parts of Lapai, North Central Nigeria by MT Tsepav, SI Ibrahim, FA Bayegun

    Published 2015-07-01
    “…Fifteen (15) VES points were occupied using G41 Geotron Resistivity meter with electrode spacing varying from 10m to 150m while a global positioning system (GPS) tracking device was used to locate the VES points. …”
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  4. 84

    Daily Plasmaspheric TEC Variations From COSMIC GPS Observations Based on RBF Neural Network‐Kriging Method by Qiqi Shi, Shuanggen Jin, Linlin Li

    Published 2023-07-01
    “…In this paper, a novel joint method of radial basis function neural network—Kriging (RBF‐Kr) method is designed to construct the daily PTEC model using the Constellation Observing System for Meteorology, Ionosphere and Climate Global Positioning System observations during the low (2009) and high (2013) solar activity years. …”
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  5. 85

    Investigation of a New Handover Approach in LTE and WiMAX by Mohammad Nour Hindia, Ahmed Wasif Reza, Kamarul Ariffin Noordin

    Published 2014-01-01
    “…Firstly, the enhanced global positioning system (GPS) and the novel received signal strength (RSS) prediction approaches are suggested to predict the target base station accurately. …”
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  6. 86

    Automatic Identification of the Main Ionospheric Trough in Total Electron Content Images by Gregory Starr, Sebastijan Mrak, Yukitoshi Nishimura, Michael Hirsch, Prakash Ishwar, Joshua Semeter

    Published 2022-06-01
    “…Abstract The main ionospheric trough (MIT) is a salient density feature in the mid‐latitude ionosphere and characterizing its structure is important for understanding Global Positioning System and HF signal propagation, and identifying geospace phenomena such as the plasmapause boundary layer. …”
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  7. 87

    Error Compensation for Dead Reckoning Based on SVM by Xin LI, Xiaoming WANG, Jianguo WU, Jiwei ZHAO, Jiacheng XIN, Kai CHEN, Bin ZHANG

    Published 2024-12-01
    “…The difference in latitude and longitude provided by the global positioning system(GPS) and inertial navigation system(INS) + DVL combination compared with latitude and longitude obtained from dead reckoning serves as the output of the model. …”
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  8. 88

    On the Occurrence of GPS Signal Amplitude Degradation for Receivers on Board LEO Satellites by Chao Xiong, Ji‐Sheng Xu, Claudia Stolle, Jose van denIjssel, Fan Yin, Guram N. Kervalishvili, Franz Zangerl

    Published 2020-02-01
    “…Abstract Transient signal loss of the global positioning system (GPS) has been frequently observed by receivers on board the European Space Agency's Swarm mission when the satellites encounter ionospheric plasma irregularities. …”
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    Article
  9. 89

    Real‐Time Detection, Location, and Measurement of Geoeffective Stellar Flares From Global Navigation Satellite System Data: New Technique and Case Studies by Manuel Hernández‐Pajares, David Moreno‐Borràs

    Published 2020-03-01
    “…Such overionization is directly measured from the dual‐frequency phase measurements gathered from hundreds of worldwide permanent receivers of the Global Navigation Satellite Systems, GNSS (like the Global Positioning System GPS), working many of them in real time. …”
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  10. 90

    Maximizing Electric Power Recovery through Advanced Compensation with MPPT Algorithms by Souad Touairi, Mustapha Zekraoui, Mustapha Mabrouki

    Published 2024-01-01
    “…The improved MPPT approach, employing angles of arrival (AoA) DV-Hop control strategies, minimizes the system’s power consumption based on the Global Positioning System (GPS). The utilization of Harris Hawks optimization (HHO) and the generation of quadrants in the four-quadrant operation mode of DC motors in the wireless sensor network (RCSFs) have been significantly enhanced in this study. …”
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  11. 91

    Influence of contextual factors on most demanding scenarios in under-19 professional soccer players by Rubén-Cipriano Romero-Rodríguez, Enrique Alonso-Pérez-Chao, Carlos Ribas, Daniel Memmert, Miguel-Ángel Gómez-Ruano

    Published 2024-03-01
    “…A total of 42 players were monitored across 27 games using Global Positioning System (GPS) technology to collect the external loads, including total distance covered, high-speed running, sprint distance, accelerations, and decelerations. …”
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  12. 92

    Response of the Ionospheric TEC to SSW and Associated Geomagnetic Storm Over the American Low Latitudinal Sector by J. B. Fashae, O. S. Bolaji, A. B. Rabiu

    Published 2022-05-01
    “…Abstract During the sudden stratospheric warming (SSW) event in 2013, we investigated the American low latitude around 75°W. We used 12 Global Positioning System (GPS) receivers, a pair of magnetometers, and the NASA Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED) satellite airglow instrument to unveil the total electron content (TEC), inferred vertical drift, and the changes in the neutral composition, respectively. …”
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  13. 93

    Underwater DVL Optimization Network (UDON): A Learning-Based DVL Velocity Optimizing Method for Underwater Navigation by Feihu Zhang, Shaoping Zhao, Lu Li, Chun Cao

    Published 2025-01-01
    “…The utilization of the raw measurement data from an Inertial Measurement Unit (IMU), which includes gyroscopes and accelerometers, to assist the DVL in velocity vector estimation and to refine it towards the Global Positioning System (GPS) velocity vector, compensates for the external environmental interference affecting the DVL, therefore enhancing the navigation accuracy. …”
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  14. 94

    BeiDou Satellites Assistant Determination by Receiving Other GNSS Downlink Signals by Lei Chen, Ke Zhang, Xiangwei Zhu, Yangbo Huang, Gang Ou, Huicui Liu

    Published 2016-01-01
    “…In this paper, we propose to add a spaceborne annular beam antenna for receiving the global positioning system (GPS) and global navigation satellite system (GLONASS) signals; therefore, the BDS satellites may be capable of determining their orbits by GPS/GLONASS signals. …”
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  15. 95

    Ionospheric Turbulence: A Challenge for GPS Loss of Lock Understanding by P. De Michelis, G. Consolini, A. Pignalberi, G. Lovati, M. Pezzopane, R. Tozzi, F. Giannattasio, I. Coco, M. F. Marcucci

    Published 2022-07-01
    “…In this study, we use data recorded on board two of the three satellites of the Swarm constellation (namely, Swarm A and Swarm B) from 15 July 2014 to 31 December 2021 to assess the possible dependence of the Global Positioning System (GPS) signals loss of lock on the presence of a specific kind of ionospheric irregularities. …”
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  16. 96

    The Diurnal Variations of GPS PWV near Poyang Lake in China during Midsummer by Shanshan Wu, Haibo Zou, Junjie Wu

    Published 2020-01-01
    “…With the 1 h-averaged data of atmospheric precipitable water vapor (PWV) for 2015–2018 retrieved from 18 ground-based Global Positioning System (GPS) observation stations near Poyang Lake (PL), China, the diurnal variations of the PWV during midsummer (July-August) are studied by the harmonic method. …”
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  17. 97

    Development of an Aerial Manipulation System Using Onboard Cameras and a Multi-Fingered Robotic Hand with Proximity Sensors by Ryuki Sato, Etienne Marco Badard, Chaves Silva Romulo, Tadashi Wada, Aiguo Ming

    Published 2025-01-01
    “…To achieve self-contained autonomous navigation to a targeted object, onboard tracking and depth cameras are used to detect the targeted object and to control the UAV to reach the target object, even in a Global Positioning System-denied environment. The robotic hand can perform proximity sensor-based grasping stably for an object that is within a position error tolerance (a circle with a radius of 50 mm) from the center of the hand. …”
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  18. 98

    Investigation of ionospheric response to a moderate geomagnetic storm over the mid-latitude of Saudi Arabia by Alenazi Moqbil Salem, Nooreldeen Hassan Mahdy, Ahmed Ayman Mahmoud, Yossuf Mohamed, Lomotey Solomon Otoo, Yassen Ahmed, Mahrous Ayman

    Published 2025-01-01
    “…Observations from three Global Positioning System (GPS) stations (RFHA, 29.6∘{\text{29.6}}^{\circ }N; ARAR, 30.9∘{\text{30.9}}^{\circ }N; TRIF, 31.6∘{\text{31.6}}^{\circ }N) in Saudi Arabia’s Northern Borders Province were used to derive the vertical total electron content (VTEC), revealing a significant increase during the storm’s main phase. …”
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  19. 99

    Does running performance in small-sided games have a relation with postural control in youth soccer players? by Caglar Edıs, Faik Vural, Hikmet Vurgun

    Published 2017-04-01
    “…Movement data were collected using a 10-Hz global positioning system from games during the 1vs1, 2vs2, 3vs3 SSG, including measures of speed and the distance covered at those speeds. …”
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  20. 100

    Ionospheric Disturbances Observed From a Single GPS Station in Hong Kong During the Passage of Super Typhoon Hato in 2017 by Shiwei Yu, Zhizhao Liu, Tsz Cheung Lee

    Published 2022-01-01
    “…We observed evident ionospheric disturbances during the passage of Super Typhoon Hato in 2017 by analyzing the highest elevation vertical total electron content (HeVTEC) time series, that is, the VTEC from the Global Positioning System (GPS) satellite with the highest elevation at each epoch, retrieved from a single GPS station in Hong Kong. …”
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