Results 41 to 50 of about 888 (172)

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

Developing an Algorithm to Improve Positioning Accuracy of Low-Cost Global Navigation Satellite System Modules

Journal of Applied Geospatial Information, 2023
Global Navigation Satellite System (GNSS) technology is the most widely used technique for obtaining positioning and navigation information for various applications. However, GNSS is not an error free technology.
Malavige Don Eranda Kanchana Gunathilaka, Indula Karunathilaka, Nihal Perera   +2 more
doaj   +1 more source

Mine Machinery Automation Using Locata-Augmented GNSS

, 2013
Many of the new paradigms in mining have at their core the requirement for reliable, continuous centimetre-level positioning accuracy to enable increased automation of mining operations. The deployment of precision systems for navigating, controlling and monitoring machinery such as drills, bulldozers, draglines and shovels with real time position ...
Rizos, Chris, Gambale, Nunzio, Lilly, Brendon   +2 more
openaire   +2 more sources

GDOP Bounds for GNSS Augmented with Range Information

ION GNSS+, The International Technical Meeting of the Satellite Division of The Institute of Navigation, 2017
Code phase GNSS receivers convert the measured satellite pseudoranges into estimates of the position and clock offset of the receiver, typically via an iterative, linearized least squares method. Since the pseudoranges themselves are noisy, the resulting estimates of position and time are random variables.
Swaszek, Peter F., Hartnett, Richard J., Seals, Kelly C.   +2 more
openaire   +2 more sources

Trajectory optimisation for avionics-based GNSS integrity augmentation system [PDF]

2016 IEEE/AIAA 35th Digital Avionics Systems Conference (DASC), 2016
In this paper, trajectory optimisation algorithms developed specifically for the Global Navigation satellite System (GNSS) Avionics-Based Integrity Augmentation (ABIA) system are presented. The ABIA system is designed to increase the levels of integrity and accuracy (as well as continuity in multi-sensor data fusion architectures) of GNSS in a variety ...
Sabatini, Roberto, Moore, Terry, Hill, Chris, Gardi, Alessandro, Ramasamy, Subramanian, Gilgien, Michael   +5 more
openaire   +2 more sources

Lacking data? No worries! How synthetic images can alleviate image scarcity in wildlife surveys: A case study with muskox (Ovibos moschatus)

Remote Sensing in Ecology and Conservation, EarlyView.
This study investigates the integration of synthetic imagery, created with diffusion‐based models, to supplement limited training data and improve muskox (Ovibos moschatus) detection in zero‐shot (ZS) and few‐shot (FS) settings. ZS models detected more than 80% of muskoxen in real images, confirming the potential of synthetic data as a substitute for ...
Simon Durand, Samuel Foucher, Alexandre Delplanque, Joëlle Taillon, Jérôme Théau   +4 more
wiley   +1 more source

Vertical Protection Level Optimization and Availability Analysis for Advanced RAIM

Frontiers in Energy Research, 2022
With the introduction of global navigation satellite systems (GNSSs) in aviation, there has been increased dependency on GNSS position. Multi-constellation GNSS services and equipment will remain a solution for many aircraft positions in safety.
Ershen Wang, Ershen Wang, Wansen Shu, Xidan Deng, Zhi Wang, Zhi Wang, Song Xu, Huan Wang   +7 more
doaj   +1 more source

Retrospective image analysis for long‐term demography using Google Earth imagery

Remote Sensing in Ecology and Conservation, EarlyView.
We demonstrate that high‐resolution Google Earth imagery, combined with minimal field validation, enables retrospective tracking of individual invasive plants. The image shows one of the monitored individuals of Opuntia sp. in Greece. Our approach reveals long‐term demographic patterns, recruitment dynamics, and spatial expansion without continuous ...
Erola Fenollosa, Garrett Cohen, Roberto Salguero‐Gómez   +2 more
wiley   +1 more source

Navigator Notes: Editorial Highlights from the Editor-in-Chief

Navigation, 2023
Welcome to the Summer 2023 issue of NAVIGATION. In this issue, we feature several articles on GNSS precise point positioning or PPP including its augmentation by additional sensors, articles on optimizing position estimation in environments with ...
Richard B. Langley
doaj   +1 more source

Tracing Three Decades of Low Earth Orbit Satellite Communication Development: A Bibliometric and Main Path Analysis of Network Architectures, Protocol Evolution, and Emerging Intelligent Services

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT Low Earth Orbit (LEO) satellite communication systems have evolved into a critical component of global broadband networks, enabling wide‐area connectivity, IoT services, and intelligent multilayer satellite–terrestrial integration. Despite rapid advancements in constellation deployment, routing mechanisms, resource management, and LEO–5G/6G ...
Wei‐Hao Su, Ya‐Chen Chuang, Long‐Sheng Chen   +2 more
wiley   +1 more source