Results 21 to 30 of about 109 (92)
Performance assessment of GNSS diffraction models in urban areas
NAVIGATION, Volume 68, Issue 2, Page 369-389, Summer 2021., 2021 Abstract The GNSS performance is significantly degraded in urban canyons because of the signal interferences caused by buildings. Besides the multipath and non‐line‐of‐sight (NLOS) receptions, the diffraction effect frequently occurs in urban canyons, which will severely attenuate the signal strength when the satellite line‐of‐sight (LOS) transmitting ...
Guohao Zhang, Li‐Ta Hsu
wiley +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
Study on GNSS‐R multi‐target detection and location method based on consistency checking
IET Radar, Sonar &Navigation, Volume 15, Issue 6, Page 605-617, June 2021., 2021 Abstract The use of GNSS reflected signals to carry out passive detection of space targets is an emerging technical field. Unlike the traditional GNSS‐R in large‐scale environments such as oceans, vegetation, ice and snow, it is required to identify different targets within the detection range, which is one of the biggest challenges.
Cheng Liu +7 more
wiley +1 more source
A long‐term broadcast ephemeris model for extended operation of GNSS satellites
NAVIGATION, Volume 68, Issue 1, Page 199-215, Spring 2021., 2021 Abstract GNSS positioning relies on orbit and clock information, which is predicted on the ground and transmitted by the individual satellites as part of their broadcast navigation message. For an increased autonomy of either the space or user segment, the capability to predict a GNSS satellite orbit over extended periods of up to two weeks is studied.
Oliver Montenbruck +2 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
Positioning Control Algorithm of Vehicle Navigation System Based on Wireless Tracking Technology
Wireless Communications and Mobile Computing, Volume 2021, Issue 1, 2021., 2021 To improve the accuracy and reliability of the on‐board navigation system positioning, the positioning control algorithm of vehicle navigation system based on wireless tracking technology is proposed. By using modern information fusion technology, the accurate positioning of vehicle integrated navigation is realized, and the design goal of ...
Leibing Yan, Deepak Gupta
wiley +1 more source
Performance of Receiver Autonomous Integrity Monitoring (RAIM) for Vertically Guided Approaches
, 2008 L'Organisation de l'Aviation Civile Internationale (OACI) a reconnu la navigation par satellite, Global Navigation Satellite System (GNSS), comme un élément clé des systèmes CNS/ATM (Communications, Navigation, and Surveillance / Air Traffic Management) et comme une base sur laquelle les Etats peuvent s'appuyer afin de délivrer des services de ...
Martineau, Anaïs +3 more
openaire +5 more sources
Improvement of Anomalous Behavior Detection of GNSS Signal Based on TDNN for Augmentation Systems
Sensors, 2018 The reliability of a navigation system is crucial for navigation purposes, especially in areas where stringent performance is required, such as civil aviation or intelligent transportation systems (ITSs). Therefore, integrity monitoring is an inseparable
Daehee Kim, Jeongho Cho
doaj +1 more source
Vision-Aided RAIM: A New Method for GPS Integrity Monitoring in Approach and Landing Phase
Sensors, 2015 In the 1980s, Global Positioning System (GPS) receiver autonomous integrity monitoring (RAIM) was proposed to provide the integrity of a navigation system by checking the consistency of GPS measurements.
Li Fu +4 more
doaj +1 more source
A Modified Residual-Based RAIM Algorithm for Multiple Outliers Based on a Robust MM Estimation
Sensors, 2020 The residual-based (RB) receiver autonomous integrity monitoring (RAIM) detector is a widely used receiver integrity enhancement technology that has the ability to rapidly respond to outliers.
Wenbo Wang, Ying Xu
doaj +1 more source