Results 81 to 90 of about 109,915 (264)
Calibration of Magnetometers with GNSS Receivers and Magnetometer-Aided GNSS Ambiguity Fixing [PDF]
Sensors, 2017 Magnetometers provide compass information, and are widely used for navigation, orientation and alignment of objects. As magnetometers are affected by sensor biases and eventually by systematic distortions of the Earth magnetic field, a calibration is needed. In this paper, a method for calibration of magnetometers with three Global Navigation Satellite
openaire +6 more sources
Revista Brasileira de Cartografia, 2020 Os GNSS (Global Navigation Satellite Systems) têm ganhado bastante visibilidade nas últimas duas décadas, sendo atualmente aplicados em diversas atividades, as quais vão muito além do posicionamento e navegação; algumas delas requerem alta acurácia (centimétrica a milimétrica), como o monitoramento de estruturas e a agricultura de precisão.
Paulo de Tarso Setti Júnior +4 more
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The GNSS-R Eddy Experiment II: L-band and Optical Speculometry for Directional Sea-Roughness Retrieval from Low Altitude Aircraft [PDF]
, 2003 We report on the retrieval of directional sea-roughness (the full directional mean square slope, including MSS, direction and isotropy) through inversion of Global Navigation Satellite System Reflections (GNSS-R) and SOlar REflectance Speculometry (SORES)
B. Chapron +20 more
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2D LiDAR SLAM Back-End Optimization with Control Network Constraint for Mobile Mapping
Sensors, 2018 Simultaneous localization and mapping (SLAM) has been investigated in the field of robotics for two decades, as it is considered to be an effective method for solving the positioning and mapping problem in a single framework.
Jingren Wen +5 more
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Accelerating GNSS Software Receivers [PDF]
ION GNSS+, The International Technical Meeting of the Satellite Division of The Institute of Navigation, 2016 This paper addresses both the efficiency and the portability of a computer program in charge of the baseband signal processing of a GNSS receiver. Efficiency, in this context, refers to optimizing the speed and memory requirements of the software receiver.
Fernández-Prades, Carles +2 more
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Improved Short-Term Clock Prediction Method for Real-Time Positioning
Sensors, 2017 The application of real-time precise point positioning (PPP) requires real-time precise orbit and clock products that should be predicted within a short time to compensate for the communication delay or data gap. Unlike orbit correction, clock correction
Yifei Lv +5 more
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Assessment of Multi-Frequency PPP Ambiguity Resolution Using Galileo and BeiDou-3 Signals
Remote Sensing, 2021 From network RTK to PPP-RTK, it is highly expected that high-precision positioning within a few minutes can be achieved with a sparse reference network.
Jiang Guo +3 more
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Sensitivity to Soil Moisture and Observation Geometry of Spaceborne GNSS-R Delay-Doppler Maps [PDF]
, 2019 © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes,creating new ...
Camps Carmona, Adriano José +5 more
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IEEE Communications Surveys & Tutorials, 2023 With the miniaturization of electronics, Global Navigation Satellite Systems (GNSS) receivers are getting more and more embedded into devices with harsh energy constraints. This process has led to new signal processing challenges due to the limited processing power on battery-operated devices and to challenging wireless environments, such as deep urban
Grenier, Antoine +3 more
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Near real-time water vapor tomography using ground-based GPS and meteorological data: long-term experiment in Hong Kong [PDF]
Annales Geophysicae, 2014 Water vapor tomography is a promising technique for reconstructing the 4-D moisture field, which is important to the weather forecasting and nowcasting as well as to the numerical weather prediction. A near real-time 4-D water vapor tomographic system
P. Jiang +4 more
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