Results 31 to 40 of about 3,067 (278)
With the increasing number of available satellites from multi‐global navigation satellite systems (GNSS) and their applications in complicated environments, an increased number of faults in measurements are inevitable. Fault detection and exclusion (FDE)
Yuting Gao +3 more
doaj +1 more source
GNSS receiver autonomous integrity monitoring (RAIM) algorithm based on robust estimation
Integrity is significant for safety-of-life applications. Receiver autonomous integrity monitoring (RAIM) has been developed to provide integrity service for civil aviation.
Yuanxi Yang, Junyi Xu
doaj +1 more source
Resilience Monitoring for Multi-Filter All-Source Navigation Framework With Assurance
The Autonomous and Resilient Management of All-source Sensors (ARMAS) framework monitors residual-space test statistics across unique sensor-exclusion banks of filters (known as subfilters) to provide a resilient, fault-resistant all-source navigation ...
Jonathon S. Gipson, Robert C. Leishman
doaj +1 more source
A Subset-Reduced Method for FDE ARAIM of Tightly-Coupled GNSS/INS
The advanced receiver autonomous integrity monitoring (advanced RAIM, ARAIM) is the next generation of RAIM which is widely used in civil aviation. However, the current ARAIM needs to evaluate hundreds of subsets, which results in huge computational ...
Weichuan Pan +3 more
doaj +1 more source
An Enhanced RAIM Method for Satellite-Based Positioning Using Track Constraint
Integrity of global navigation satellite system (GNSS) positioning is one major concern for the GNSS-based railway train control systems due to critical safety requirements.
Jiang Liu +3 more
doaj +1 more source
GPS fault detection and exclusion using moving average filters [PDF]
A new approach based on the moving average (MA) is proposed to perform satellite failure detection and exclusion (FDE). By taking the average of the last few sums of the squares of the GPS range residual errors, the MA filter is applied to speed up failure detection.
Tsai, Y.-H., Chang, F.-R., Yang, W.-C.
openaire +1 more source
A Novel Method for Optimum Global Positioning System Satellite Selection Based on a Modified Genetic Algorithm. [PDF]
In this paper, a novel method for selecting a navigation satellite subset for a global positioning system (GPS) based on a genetic algorithm is presented.
Jiancai Song, Guixiang Xue, Yanan Kang
doaj +1 more source
ABSTRACT Background Central nervous system (CNS) involvement in childhood acute lymphoblastic leukemia (ALL) is assessed by cell counting and cytomorphology from cerebrospinal fluid (CSF) and is used for treatment stratification worldwide. The ratio of “CNS2” patients in clinical trials ranges from 3% to 40%, with unclear prognostic significance ...
Laura Almási +14 more
wiley +1 more source
ABSTRACT Background Neuromyelitis optica spectrum disorder (NMOSD) is a relapsing autoimmune disease of the central nervous system. High‐dose intravenous methylprednisolone (IVMP) is the standard first‐line therapy for acute attacks, although some patients remain refractory.
Wataru Horiguchi +5 more
wiley +1 more source
Multi-layered Multi-Constellation Global Navigation Satellite System Interference Mitigation
Several layers of defense can be implemented in a global navigation satellite system (GNSS) receiver to improve its performance in the presence of interference.
Ciro Gioia, Daniele Borio
doaj +1 more source

