Results 41 to 50 of about 9,363 (210)

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

Research on Multi-Source Data Fusion and Satellite Selection Algorithm Optimization in Tightly Coupled GNSS/INS Navigation Systems

Remote Sensing
With the increase in the number of Global Navigation Satellite System (GNSS) satellites and their operating frequencies, richer observation data are provided for the tightly coupled Global Navigation Satellite System/Inertial Navigation System (GNSS/INS).
Xuyang Yu, Zhiming Guo, Liaoni Wu
doaj   +1 more source

An Optimal Tropospheric Tomography Method Based on the Multi-GNSS Observations

Remote Sensing, 2018
Aside from the well-known applications (positioning, navigation and timing) brought by Global Navigation Satellite System (GNSS), reconstruction of tropospheric atmosphere distribution information using tomography technique based on the multi-GNSS ...
Qingzhi Zhao, Yibin Yao, Xinyun Cao, Feng Zhou, Pengfei Xia   +4 more
doaj   +1 more source

Special Issue on GNSS Data Processing and Navigation

Sensors, 2020
Global Navigation Satellite System (GNSS) data can be used in a myriad of ways. The current number of applications exceed by far those originally GNSS was designed for.
Adria Rovira-Garcia, José Miguel Juan Zornoza   +1 more
doaj   +1 more source

Accuracy assessment of integrated GNSS measurements with LIDAR mobile mapping data in urban environments

Measurement: Sensors, 2021
Global Navigation Satellite System (GNSS) is space-based systems for positioning, navigation and timing. Non-GNSS sources are aiding to maintain accuracy of system states including positioning, velocity, acceleration, attitude and angular rate essential ...
Chanachon Paijitprapaporn, Thayathip Thongtan, Chalermchon Satirapod   +2 more
doaj   +1 more source

Semi‐automated seal detection on the Western Antarctic Peninsula: an unsupervised machine learning approach for detecting ice seals in aerial survey data

Remote Sensing in Ecology and Conservation, EarlyView.
This study presents a semi‐automated, rule‐based image analysis pipeline to detect ice seals in aerial surveys of the Western Antarctic Peninsula during an unusually low sea ice year. By using simple hierarchical clustering instead of deep learning, the method substantially reduced human annotation effort while achieving 82% recall, identifying 758 ...
Claire McGinnity, Connor C.G. Bamford, Nathan Fenney, Andrew Fleming, Jaume Forcada, Michael S. Tift, Luis A. Hückstädt, Daniel P. Costa, Peter T. Fretwell   +8 more
wiley   +1 more source

A Multi-Sensor Tight Fusion Method Designed for Vehicle Navigation

Sensors, 2020
Using the Global Navigation Satellite System (GNSS), it is difficult to provide continuous and reliable position service for vehicle navigation in complex urban environments, due to the natural vulnerability of the GNSS signal. With the rapid development
Qifeng Lai, Hong Yuan, Dongyan Wei, Ningbo Wang, Zishen Li, Xinchun Ji   +5 more
doaj   +1 more source

Integrating Image Segmentation and Deep Learning to Improve Radio Frequency Propagation Models

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT This paper proposes a multi‐sensor approach to improve radio frequency (RF) propagation models, which play a key role in the rapidly expanding field of connected vehicle technology. Focusing on the 1‐ to 20‐GHz frequency range, which is critical for both satellite‐to‐vehicle and base station‐to‐vehicle communications, our study introduces a ...
Jonathan Israel, Xavier Boulanger, Vegard Arneson   +2 more
wiley   +1 more source

A flexible implementation of a Global Navigation Satellite System (GNSS) receiver for on-board satellite navigation

2010 Conference on Design and Architectures for Signal and Image Processing (DASIP), 2010
In this paper, we present the implementation of the acquisition algorithm of a versatile Global Navigation Satellite System (GNSS) receiver for satellite applications. For versatility purpose, the choice of the receiver algorithms has been motivated by 1) their capability to fulfill the application requirements with a moderate complexity, 2) their ...
Arnaud Dion, Emmanuel Boutillon, Vincent Calmettes, Emmanuel Liegon   +3 more
openaire   +2 more sources

Tracking Post‐Consumer Packaging Plastics With Global Positioning Systems: Pilot Study in Malaysia

Sustainable Development, EarlyView.
ABSTRACT Landfilling and the mismanagement of packaging plastic waste pose significant challenges in developing countries, especially in Southeast Asia. There is an empirical gap in plastic waste management data, which is largely handled by informal players despite established municipal solid waste collection systems.
Shafeeq Ahmed Syed Ali, I. M. S. K. Ilankoon, Ammar Ehsan Bin Omar, Lian Zhang, Jully Tan   +4 more
wiley   +1 more source