Results 141 to 150 of about 3,477,051 (221)

Deep Reinforcement Learning Based Autonomous Decision‐Making for Cooperative Uncrewed Aerial Vehicles: A Search and Rescue Real World Application

Journal of Field Robotics, Volume 43, Issue 7, Page 4382-4401, October 2026.
ABSTRACT This paper presents the first end‐to‐end framework that combines guidance, navigation, and centralized task allocation for multiple UAVs performing autonomous search‐and‐rescue (SAR) in GNSS‐denied indoor environments. A twin delayed deep deterministic policy gradient controller is trained with an artificial potential field (APF) reward that ...
Thomas Hickling, Maxwell Hogan, Abdulla Tammam, Nabil Aouf   +3 more
wiley   +1 more source

On the Impact of Multi-GNSS Solutions on Satellite Products and Positioning [PDF]

, 2016
In Global Navigation Satellite System (GNSS) coordinate time series unrecognised errors and un-modelled (periodic) effects may bias non-linear motions induced by geophysical signals.
TEFERLE, Felix Norman, Dach, Rolf, ABRAHA, Kibrom Ebuy, HUNEGNAW, Addisu   +3 more
core  

Automated Lawn Maintenance: An Agronomic and Operational Review of Turf Health, Biodiversity, and Field Performance

Journal of Field Robotics, Volume 43, Issue 7, Page 4603-4623, October 2026.
ABSTRACT Grass mowing is one of the most resource‐consuming activities in green maintenance, whether in private areas such as home gardens or in public spaces like urban parks. In recent years, concerns related to climate change, human health, and sustainability have become increasingly prominent in green maintenance, leading manufacturers and industry
Andrea Palladini, Lorenzo Guerrini, Marco Fontanelli, Lucia Bortolini   +3 more
wiley   +1 more source

Outracing a National Level Model Racing Car Champion: A Hybrid Model‐Based Data‐Driven Approach

Journal of Field Robotics, Volume 43, Issue 7, Page 4821-4835, October 2026.
ABSTRACT This paper discusses lap time optimization, focusing on a single lap without considering opponents in autonomous racing. The paper presents a control and optimization architecture composed of a model‐based low level controller and a higher level iterative learning algorithm with the goal of obtaining the fastest qualifying lap in autonomous ...
Mustafa Alp, Matteo Corno, Giulio Panzani, Sergio Matteo Savaresi   +3 more
wiley   +1 more source

Automatic GNSS Coordinate Time Series Analysis for Very Large Networks

Earth and Space Science, Volume 13, Issue 10, October 2026.
Abstract We present a new algorithm, AutoCF, for automatically constructing coordinate functions (CFs) for continuously operating GNSS reference stations (CORSs). The iterative algorithm alternates between application of LASSO and Ridge Regression methods, with hyperparameters successively tightened with each iteration to more judiciously scrutinize ...
Richard A. Bennett, Phillip K. McFarland, Amy Whetter, Jordan Krcmaric   +3 more
wiley   +1 more source

Probabilistic Wetland Maps for Mapping Soil Carbon Stock Distribution Across the Pacific Northwest

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 10, October 2026.
Abstract Inland freshwater wetlands are poorly mapped and represented despite disproportionately storing soil organic carbon (SOC) relative to their surface area. Here, we assess if digital soil mapping models improve by adding a spatially continuous wetland probability, the Wetland Intrinsic Potential (WIP), as a predictor for SOC across both wetlands
Anthony J. Stewart, Meghan Halabisky, David V. D’Amore, Diogo Spinola, Chad Babcock, L. Monika Moskal, David Butman   +6 more
wiley   +1 more source

Sea Surface Height Estimation with Multi-GNSS and Wavelet De-noising. [PDF]

Sci Rep, 2019
Chen F, Liu L, Guo F.
europepmc   +1 more source

Getting a Grip on Multi-GNSS: The International GNSS Service MGEX Campaign

, 2013
Within the International GNSS Service (IGS), more than 200 worldwide agencies have, for many years, pooled resources and permanent GNSS station data to generate precise GNSS products in support of Earth science research, multidisciplinary applications ...
Weber, Georg, Neilan, Ruth, Weber, Robert, Rizos, Chris, Hugentobler, Urs, Montenbruck, Oliver   +5 more
core  

Dynamic Evolution of a Storm‐Time “Super‐EPB” Event Over China on the Magnetically Disturbed Night of 01 December 2023

Space Weather, Volume 24, Issue 10, October 2026.
Abstract This paper investigates the dynamic evolution of a storm‐time “Super‐EPB” event over China on 1 December 2023 (Kp ≤ 7, SYM/H ≥ −130 nT) using multi‐instrument observations. Occurring near sunset as the IMF‐Bz abruptly turned southward, with auroral extension to midlatitudes, the “Super‐EPB” extended to 40°N with an apex height of ∼2,460 km ...
Longchang Sun, Jiyao Xu, Wei Yuan, Yajun Zhu, Maosheng He, Wenjie Sun, Guozhu Li, Jiaojiao Zhang, Hong Gao, Aibin Zhang, Weijun Liu, Guojun Wang   +11 more
wiley   +1 more source

Ionospheric Scintillation Induced by Hot Flow Anomalies via Particle Precipitation

AGU Advances, Volume 7, Issue 7, October 2026.
Abstract Ionospheric scintillation disrupts trans‐ionospheric radio signals and represents significant challenges for critical communication and navigation systems. Here we document that hot flow anomalies (HFAs), transient disturbances formed near Earth's bow shock, can contribute to scintillation near the cusp.
Jia‐Chen Zhao, Qing‐He Zhang, Zhong‐Wei Yang, Duan Zhang, Kjellmar Oksavik, Bo‐Yi Wang, Yu‐Zhang Ma, Zan‐Yang Xing, Yong Wang, Ling‐Xin Zhao, Xiang‐Yu Wang, Jin Guo, Shi‐Mou Wang, Cai‐Jun Yan, Bian‐Long Zhao, Hong‐Kai Zhang, Chang‐Yue Zhao   +16 more
wiley   +1 more source