Results 11 to 20 of about 888 (172)
Remote Sensing, 2021 Positioning accuracy is affected by the combined effect of user range errors and the geometric distribution of satellites. Dilution of precision (DOP) is defined as the geometric strength of visible satellites.
Haomeng Cui, Shoujian Zhang
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The Inertial Attitude Augmentation for Ambiguity Resolution in SF/SE-GNSS Attitude Determination
Sensors, 2014 The Unaided Single Frequency/Single Epoch Global Navigation Satellite System (SF/SE GNSS) model is the most challenging scenario for ambiguity resolution in the GNSS attitude determination application.
Jiancheng Zhu +5 more
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CSAC Characterization and Its Impact on GNSS Clock Augmentation Performance [PDF]
Sensors, 2017 Chip Scale Atomic Clocks (CSAC) are recently-developed electronic instruments that, when used together with a Global Navigation Satellite Systems (GNSS) receiver, help improve the performance of GNSS navigation solutions in certain conditions (i.e., low satellite visibility).
Enric Fernández +2 more
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A GNSS Integrity Augmentation System for Ground Vehicle Operations
Energy Procedia, 2017 Abstract The employment of GNSS for the navigation of autonomous ground vehicles has so far been applied to mining operations in Australia. Autonomous systems enable the development of navigation strategies such as global path-planning and path optimization for vehicle fleets, thereby lowering overall carbon emissions.
Suraj Bijjahalli +2 more
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Drones and global navigation satellite systems: current evidence from polar scientists [PDF]
Royal Society Open Science, 2020 Aerial unmanned vehicles, so-called drones, present a paradigm shift away from the long-term use by scientists of manned aeroplanes and helicopters. This is evident from the number of research articles that focus on data obtained with drones.
Iain Sheridan
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Fault-Free Protection Level Equation for CLAS PPP-RTK and Experimental Evaluations
Sensors, 2022 Centimeter level augmentation system (CLAS) of the quasi-zenith satellite system (QZSS) is the first precise point positioning-real time kinematic (PPP-RTK) augmentation system of the global navigation satellite system (GNSS), which is currently ...
Euiho Kim +6 more
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Geo-spatial Information Science, 2022 With the development of the Low Earth Orbit (LEO) communication constellations, it has become a hot area of research to provide additional navigation augmentation services.
Ziqian Wu +5 more
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GNSS Performance Modelling and Augmentation for Urban Air Mobility [PDF]
Sensors, 2019 One of the primary challenges facing Urban Air Mobility (UAM) and the safe integration of Unmanned Aircraft Systems (UAS) in the urban airspace is the availability of robust, reliable navigation and Sense-and-Avoid (SAA) systems. Global Navigation Satellite Systems (GNSS) are typically the primary source of positioning for most air and ground vehicles ...
Suraj Bijjahalli +2 more
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Physical Augmentation Factor of Precision in Gnss
Artificial Satellites, 2022 Abstract The dilution of precision (DOP) in satellite navigation system provides a simple characterization of the user–satellite geometry and a quantitative assessment of the positioning constellation configuration. The essential idea of physical augmentation factor of precision (PAFP) proposed in this work, is that navigation signals ...
Lihua Ma, Guoxiang Ai, Ting Kong
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GNSS Interference Monitoring and Detection (GIMAD) System
Engineering Proceedings, 2023 In the last few years, gradually more systems have relied on the Global Navigation Satellite System (GNSS) for their correct functioning. These systems include safety-critical applications such as airports or emergency services.
Enric Obiols-Bernaus +5 more
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