Results 21 to 30 of about 888 (172)
LEO-Augmented GNSS Based on Communication Navigation Integrated Signal [PDF]
Sensors, 2019 Low Earth Orbit (LEO) is of great benefit for the positioning performance of Global Navigation Satellite System (GNSS). To realize the system of LEO-augmented GNSS, three methods to integrate communication and navigation signal for LEO communication system with the least influence on the communication performance are analyzed.
Wang, Lei +4 more
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GNSS augmentation services for large-area PPP-RTK
, 2023 Scientific Technical Report STR ; 24 ...
openaire +6 more sources
Earth, Planets and Space, 2022 Ground-Based Augmentation System (GBAS) is a GNSS augmentation system that meets International Civil Aviation Organization (ICAO) requirements to support precision approach and landing.
Slamet Supriadi +5 more
doaj +1 more source
CUSUM-based GNSS Spoofing Detection Method for Users of GNSS Augmentation System
International Journal of Aeronautical and Space Sciences, 2020 Position and time information provided by the satellite navigation system is important in many application fields. However, the satellite navigation signal is vulnerable to interference signals due to the low navigation signal strength. This interference signal for the satellite navigation signal is being advanced to the spoofing signal, which can ...
Seongkyun Jeong, Minchan Kim, Jiyun Lee
openaire +1 more source
GNSS RTK Positioning Augmented with Large LEO Constellation [PDF]
Remote Sensing, 2019 It is widely known that in real-time kinematic (RTK) solution, the convergence and ambiguity-fixed speeds are critical requirements to achieve centimeter-level positioning, especially in medium-to-long baselines. Recently, the current status of the global navigation satellite systems (GNSS) can be improved by employing low earth orbit (LEO) satellites.
Xingxing Li +5 more
openaire +2 more sources
Journal of Marine Science and Engineering, 2020 The Global Navigation Satellite System (GNSS) has become the primary means of obtaining Position, Navigation, and Timing (PNT) information at sea. The current capabilities of the Global Positioning System (GPS) constellation, although adequate for ocean ...
Manuel Lopez-Martinez +3 more
doaj +1 more source
Improved PPP Ambiguity Resolution with the Assistance of Multiple LEO Constellations and Signals
Remote Sensing, 2019 The fusion of low earth orbit (LEO) constellation and Global Navigation Satellite Systems (GNSS) can increase the number of visible satellites and optimize spatial geometry, which is expected to improve the performance of precise point positioning (PPP ...
Xin Li +6 more
doaj +1 more source
Efficient Methods of Utilizing Multi-SBAS Corrections in Multi-GNSS Positioning
Sensors, 2020 Various combining methods have been proposed to utilize multi-satellite-based augmentation system (SBAS) correction to provide accurate position in the global navigation satellite system (GNSS) receiver.
Kwi Woo Park +2 more
doaj +1 more source
Optimal Walker Constellation Design of LEO-Based Global Navigation and Augmentation System
Remote Sensing, 2020 Low Earth orbit (LEO) satellites located at altitudes of 500 km~1500 km can carry much stronger signals and move faster than medium Earth orbit (MEO) satellites at about a 20,000 km altitude.
Meiqian Guan +4 more
doaj +1 more source
SBAS-Aided GPS Positioning with an Extended Ionosphere Map at the Boundaries of WAAS Service Area
Remote Sensing, 2021 Space-based augmentation system (SBAS) provides correction information for improving the global navigation satellite system (GNSS) positioning accuracy in real-time, which includes satellite orbit/clock and ionospheric delay corrections.
Mingyu Kim, Jeongrae Kim
doaj +1 more source