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Trunk Detection in Complex Forest Environments Using a Lightweight YOLOv11-TrunkLight Algorithm. [PDF]

Sensors (Basel)
Zhang S, Zheng Y, Bi R, Chen Y, Chen C, Tian X, Liao B.   +6 more
europepmc   +1 more source

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GNSS satellite-based augmentation systems for Australia

GPS Solutions, 2016
We provided an overview of various satellite-based augmentation systems (SBAS) options for augmented GNSS services in Australia, and potentially New Zealand, with the aim to tease out key similarities and differences in their augmentation capabilities.
Suelynn Choy, Joost Kuckartz, Andrew G. Dempster, Chris Rizos, Matt Higgins   +4 more
openaire   +3 more sources

Method of GNSS Security Augmentation Based on LEO Satellite

Lecture Notes in Electrical Engineering, 2020
In order to improve the service performance of the global navigation satellite system (GNSS), a variety of augmentation systems have been developed, including satellite-based and ground-based augmentation methods. The purpose of augmentation systems usually includes integrity augmentation, accuracy augmentation and availability augmentation.
Tao Yan, Ying Wang, Xiao Liu, Lang Bian, Yansong Meng   +4 more
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GNSS augmented with precise laser tracking

2008 IEEE/ION Position, Location and Navigation Symposium, 2008
In this paper, we present the design of a laser tracking system using intelligent sensor nodes. We describe the individual components of the system as well as the related performance we achieve. The system is robust against electromagnetic field interferences and environmental influences. We present the differences between our precise laser tracker and
Matthias Sippel, Walter Kuntz, Leonard Reindl   +2 more
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SAPCORDA - Safe and Precise GNSS Augmentation Services

ION GNSS+, The International Technical Meeting of the Satellite Division of The Institute of Navigation, 2020
Global Navigation Satellite Systems (GNSS) have changed our lives. However, current technologies cannot meet performance, safety, and availability requirements for the new era of connected and automated transportation. Our Advanced Augmentation Services are designed to fully meet these requirements, and take your business and daily experience to a new ...
Mark Burbidge, Rodrigo Leandro, Botho Eulenburg, Cornelia Waldecker   +3 more
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InSAR datum connection using GNSS-augmented radar transponders

Journal of Geodesy, 2016
InSAR deformation estimates form a ‘free network’ referred to an arbitrary datum, e.g. by assuming a reference point in the image to be stable. Consequently, the estimates of any measurement point in the image are dependent of these postulations on reference point stability, and the estimates cannot be compared with datasets of other types of ...
Pooja Mahapatra, Hans van der Marel, Freek van Leijen, Sami Samiei-Esfahany, Roland Klees, Ramon Hanssen   +5 more
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Augmentation Systems to Ground-Based GNSS

2019
Since the deployment of the global navigation satellite systems in the early 1990s (GPS in the US and GLONASS in the USSR), the ideology of their use in aircraft has evolved from a radical replacement of all existing navigation aids to the concept of sharing diverse navigation sources.
null Sauta O.I., null Shatrakov A.Y., null Shatrakov Y.G., null Zavalishin O.I.   +3 more
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A System Concept for GNSS Augmentation Data Link

Air Traffic Control Quarterly, 1993
The advent of the Global Navigation Satellite System (GNSS) is having a profound impact on surveying, mapping, and navigation. Nowhere is this more evident than in civil aviation. In addition to the capability for cost effective precise positioning and navigation, there is now the possibility to conceive systems based on this technology that for the ...
Chris Moody, Doyle Peed
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Improving GNSS PPP accuracy through WVR PWV augmentation

Journal of Geodesy, 2019
Using 5 months of observations at a Global Navigation Satellite System (GNSS) and a Water Vapor Radiometer (WVR) collocated station at Tongji University, Shanghai, a mid-latitude coastal city in China with high level of water vapor, we analyzed the precipitable water vapor (PWV) from different sources including WVR, GNSS, Numerical Weather Prediction ...
Jungang Wang, Zhizhao Liu
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Integrity monitoring in GNSS/INS systems by optical augmentation

2017 DGON Inertial Sensors and Systems (ISS), 2017
Reliable aircraft guidance is one of the main contributors to the high level of safety that is achieved today on modern aircraft. Especially during the landing phase, where aircraft are close to other surrounding traffic and ground obstacles, any undetected deviation from the desired flight path may lead to catastrophic consequences.
A. Schwithal, C. Tonhauser, S. Wolkow, M. Angermann, P. Hecker, N. Mumm, F. Holzapfel   +6 more
openaire   +1 more source