Results 61 to 70 of about 1,130 (254)

Artificial Intelligence in Autonomous Mobile Robot Navigation: From Classical Approaches to Intelligent Adaptation

Advanced Intelligent Systems, EarlyView.
Artificial intelligence (AI) is reshaping autonomous mobile robot navigation beyond classical pipelines. This review analyzes how AI techniques are integrated into core navigation tasks, including path planning and control, localization and mapping, perception, and context‐aware decision‐making. Learning‐based, probabilistic, and soft‐computing methods
Giovanna Guaragnella, Angelo Cardellicchio, Cosimo Patruno, Massimiliano Nitti, Nicola Pedrocchi, Vito Renò   +5 more
wiley   +1 more source

Processing and Validation of the STAR COSMIC-2 Temperature and Water Vapor Profiles in the Neutral Atmosphere

Remote Sensing, 2022
The global navigation satellite system (GNSS) radio occultation (RO) is becoming an essential component of National Oceanic and Atmospheric Administration (NOAA) observation systems.
Shu-peng Ho, Stanislav Kireev, Xi Shao, Xinjia Zhou, Xin Jing   +4 more
doaj   +1 more source

Exploring commercial GNSS RO products for Planetary Boundary Layer studies in the Arctic Region

Abstract. Commercial GNSS RO products are being touted for their coverage in polar regions where COSMIC-2 observations don’t reach. This study seeks to explore their value for Arctic PBL investigations where sufficient lower atmospheric penetration of GNSS RO is vital for representing the persistently shallow PBL.
Manisha Ganeshan, Dong L. Wu, Joseph A. Santanello, Jie Gong, C. O. Ao, Panagiotis Vergados, Kevin J. Nelson   +6 more
openalex   +3 more sources

Ionospheric data fusion with GNSS, GNSS-RO and satellite altimetry based on machine learning [PDF]

Global ionospheric maps (GIMs) are widely used ionospheric products, especially in Global Navigation Satellite System (GNSS) applications. They allow for instance to correct for the ionospheric delays in single-frequency applications. The input data for generating GIMs is typically obtained from dual-frequency observations at globally distributed GNSS ...
Marcel Iten, Shuyin Mao, Benedikt Soja
openalex   +3 more sources

Control System for the Navigation of the Agricultural Robots: A Review

Journal of Field Robotics, EarlyView.
ABSTRACT Control systems for the navigation of autonomous agricultural robots—particularly those operating in uneven terrain and in the presence of static or dynamic obstacles—have advanced considerably in recent years. As conventional machinery evolves toward increasingly automated systems, the design of reliable navigation controllers has become ...
Edna Carolina Moriones Polanía, Hugo Rafacho Fernandes, Daniel Albiero, Angel Pontin Garcia   +3 more
wiley   +1 more source

Precise Orbit Determination for Climate Applications of GNSS Radio Occultation including Uncertainty Estimation

Remote Sensing, 2020
Global Navigation Satellite System (GNSS) Radio Occultation (RO) is a highly valuable remote sensing technique for probing the Earth’s atmosphere, due to its global coverage, high accuracy, long-term stability, and essentially all-weather capability.
Josef Innerkofler, Gottfried Kirchengast, Marc Schwärz, Christian Pock, Adrian Jäggi, Yago Andres, Christian Marquardt   +6 more
doaj   +1 more source

Preliminary Assessment of BDS Radio Occultation Retrieval Quality and Coverage Using FY-3E GNOS II Measurements

Remote Sensing, 2023
The FengYun-3E Global Navigation Satellite System (GNSS) occultation sounder II (FY-3E GNOS II) was launched on 5 July 2021. For the first time, based on the new GNOS II sensor, this mission realizes radio occultation (RO) and reflectometry observations ...
Congliang Liu, Mi Liao, Yueqiang Sun, Xi Wang, Jiahui Liang, Xiuqing Hu, Peng Zhang, Guanglin Yang, Yan Liu, Jinsong Wang, Weihua Bai, Qifei Du, Xiangguang Meng, Peng Hu, Guangyuan Tan, Xianyi Wang, Junming Xia, Feixiong Huang, Cong Yin, Yuerong Cai, Wei Li, Peixian Li, Gottfried Kirchengast   +22 more
doaj   +1 more source

Attributing Upper‐Tropospheric Warm Biases in CMIP6 Models to Ice Cloud‐Radiation Interaction Deficiencies Over Tropical Oceans

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract We assess the impact of hydrometeor radiative effects on tropical and subtropical Pacific air temperature anomalies (TAA) using Coupled Model Intercomparison Project Phase 6 (CMIP6) model simulations and satellite data. CMIP6 models are grouped by their treatment of frozen hydrometeors: SON2 (explicit cloud and falling ice), SON1 (simplified),
J.‐L. F. Li, Wei‐Liang Lee, Kuan‐Man Xu, J. H. Jiang, Yi‐Hui Wang, Yu‐Cian Tsai, S‐P. Ho, Qing Yue, Graeme Stephens, Jia‐Yuh Yu, Huiwen Chuang   +10 more
wiley   +1 more source

GNSS-RO LEO satellite orbit optimization for Egypt and the Middle East region

Alexandria Engineering Journal, 2020
The “Radio Occultation (RO)” method is one from the simple, accurate and high resolution methods that produces a complete atmosphere model. Each region/country optimizes a “Low Earth Orbiter (LEO)” satellite orbit that covers its climate requirements by processing the “Global Navigation Satellite System (GNSS)” received signal.
Ibrahim Fouad Ghoniem, Ashraf El-Kutb Mousa, Gamal El-Fiky   +2 more
openaire   +2 more sources

Impacts of GNSS RO Data on Typhoon Forecasts Using Global FV3GFS with GSI 4DEnVar

Atmosphere, 2023
The FORMOSAT-7/COSMIC-2 satellites were launched in 2019, which can provide considerably larger amounts of radio occultation (RO) observations than the FORMOSAT-3/COSMIC satellites. The radio signals emitted from the global navigation satellites system (GNSS) are received by these low Earth orbit (LEO) satellites to provide the so-called bending angle ...
Tang-Xun Hong, Ching-Yuang Huang, Chen-Yang Lin, Guo-Yuan Lien, Zih-Mao Huang, Shu-Ya Chen   +5 more
openaire   +2 more sources