Results 31 to 40 of about 481 (171)
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 +7 more
doaj +1 more source
GNSS spoofing detection through spatial processing
NAVIGATION, Volume 68, Issue 2, Page 243-258, Summer 2021., 2021 Abstract In this paper, we present an algorithmic framework for signal‐geometry‐based approaches of GNSS spoofing detection. We formulate a simple vs. simple hypothesis test independent of nuisance parameters that results in significantly reduced missed detection probability compared to prior approaches.
Fabian Rothmaier +3 more
wiley +1 more source
IET Intelligent Transport Systems, Volume 15, Issue 1, Page 43-60, January 2021., 2021 Abstract Applications of intelligent transportation systems are continuously increasing. Since positioning is a key component in these systems, it is essential to ensure its reliability and robustness, and monitor its integrity so that the required levels of positioning accuracy, integrity, continuity and availability can be maintained.
Tarek Hassan +2 more
wiley +1 more source
A Multipath Processing Technology Based on Multiparameter‐Combined Observation in GNSS
Mobile Information Systems, Volume 2021, Issue 1, 2021., 2021 In the Global Navigation Satellite System (GNSS), the multipath error affected by many aspects is the main error source that affects satellite navigation, and it is difficult to establish a much more accurate model to analyze it. Based on the ground multipath reflection model, it firstly deeply studies the influence of GNSS satellite orbit parameters ...
T. Y. Zhou, B. W. Lian, Chi-Hua Chen
wiley +1 more source
Impact of sample correlation on SISRE overbound for ARAIM [PDF]
NAVIGATION, 2018 This paper analyzes the effect of error correlation on the SISRE bounding for GPS and Galileo satellites. For a given period of data collection, it computes the effective number of independent samples contained in a dataset applying an estimation variance analyses.
Santiago Perea +2 more
openaire +2 more sources
Development of the dual‐frequency dual‐constellation airborne multipath models
NAVIGATION, Volume 67, Issue 1, Page 61-81, Spring 2020., 2020 Abstract This paper presents a methodology to build multipath models for aviation use of new Global Positioning System (GPS) and Galileo signals. The estimation of airframe multipath errors makes use of carrier phase measurements; thus, it is affected by the integer ambiguities. A new method for removing the ambiguities from the multipath estimation is
Mihaela‐Simona Circiu +5 more
wiley +1 more source
A Modified Range Consensus Algorithm Based on GA for Receiver Autonomous Integrity Monitoring
Mathematical Problems in Engineering, Volume 2020, Issue 1, 2020., 2020 With the considerable increase of visible satellites for positioning, the fault detection and identification performance of Range Consensus (RANCO) algorithm for Receiver Autonomous Integrity Monitoring (RAIM) will significantly be improved. However, the calculation amount of RANCO algorithm will exponentially increase for the sharp addition of visible
Jing Zhao +4 more
wiley +1 more source
Robust Modeling of GNSS Orbit and Clock Error Dynamics
Navigation, 2022 In this paper, we develop new stochastic orbit and clock error models for positioning, fault detection, and integrity monitoring over time. GPS and Galileo orbit and clock data are evaluated and ranging errors are analyzed and modeled over time.
Elisa Gallon +2 more
doaj +1 more source
Global Integrity combining ARAIM and SBAS - Method and Operational Benefit [PDF]
, 2018 Today, Satellite Based Augmentation Systems (SBASs) are in transition to support dual frequency Global Positioning System (GPS) or Galileo. With this evolution comes an architectural change, mitigating some of the time-critical requirements to provision ...
Rippl, Markus +7 more
core +1 more source
Integrity monitoring scheme for single-epoch GNSS PPP-RTK positioning
Satellite Navigation, 2023 Integrity monitoring for precise point positioning is critical for safety-related applications. With the increasing demands of high-accuracy autonomous navigation for unmanned ground and aerial vehicles, the integrity monitoring method of high-precision ...
Wenhao Zhang, Jinling Wang
doaj +1 more source