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Global navigation satellite systems performance analysis and augmentation strategies in aviation

Roberto Sabatini, Terry Moore, Subramanian Ramasamy
2017 Progress in Aerospace Sciences  
jitter from all sources except dynamic stress error and ߠ is the dynamic stress error in the PLL tracking loop.  ...  Frequency jitter due to thermal noise and dynamic stress error are the main errors in a GNSS receiver Frequency Lock Loop (FLL).  ... 
doi:10.1016/j.paerosci.2017.10.002 fatcat:bgb4vcnv5jfnvddfi6hak62d5e

Multisensor Navigation Systems: A Remedy for GNSS Vulnerabilities?

Dorota A. Grejner-Brzezinska, Charles K. Toth, Terry Moore, John F. Raquet, Mikel M. Miller, Allison Kealy
2016 Proceedings of the IEEE  
A multi-sensor navigation approach offers an effective augmentation in GNSSchallenged environments that holds a promise of delivering robust and resilient PNT.  ...  GNSS/IMU integration.  ...  within the GNSS tracking loops internal to the GNSS receiver as it tracks the GNSS signals.  ... 
doi:10.1109/jproc.2016.2528538 fatcat:fzk3vj7dfjfdvdgezcj6bjvusy

A new signal fault detection algorithm for vector tracking loop in strong noise environments

Huibin WANG, Yongmei CHENG, Zhaoxu TIAN
2022 Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University  
In the vector tracking loop(VTL) of the satellite navigation system, the signal faults caused by the abnormal atmospheric disturbances or other interferences may be distorted when outputted by the discriminators  ...  larger than 0.5 chips and can detect drift faults in 25~30 dBHz strong noise environments.  ...  IEEE Journal of Selected Topics in Signal Processing, 2009, 3(4) : 674•681 [3] BHATTACHARYYA S, GEBRE•EGZIABHER D. Vector loop RAIM in nominal and GNSSstressed environments [ J] .  ... 
doi:10.1051/jnwpu/20224020323 fatcat:by5jwf5dkzhgbanyct4ajrdzbi

Effects of Solar Radio Emission and Ionospheric Irregularities on GPS/GLONASS Performance [chapter]

Vladislav V., Yury V., Shuanggen Ji
2013 Geodetic Sciences - Observations, Modeling and Applications  
as the International GNSS service and Geographical Survey Institute of Japan for RINEX data.  ...  Smolkov for his support and interest in this investigation. We are thankful to N.S. Gavriluk, A.B. Ishin, Prof. M.V. Tinin for their assistance in the preparing some parts. We are obliged to Dr. V.  ...  Influence of geomagnetic and sporadic disturbances of the near-Earth space environment on GNSS users includes effects of regular and irregular refraction in the near-Earth space environment, interference  ... 
doi:10.5772/54568 fatcat:idics3c4i5bxtbmjwvrgkzpk5u

The 18th Saint Petersburg International Conference on Integrated Navigation Systems

2011 IEEE Aerospace and Electronic Systems Magazine  
Acknowledgments The support of the Survey Department of the Ministry of Transportation and Public Works is gratefully acknowledged.  ...  Acknowledgments The authors would like to acknowledge the invaluable assistance provided by Vladimir Branetz,, Mikhail Mikhailov and Juri Stishov of the RSC Energia.  ...  ( 2 ,2^ a n +b n (9) The corresponding strain energy (3) and work of inner stresses (5) are: The inner stresses in the i -layer can be expanded in the Fourier series.  ... 
doi:10.1109/maes.2011.6070282 fatcat:6bww25yu4fcmtoszue6f3mc7im

12th Saint Petersburg International Conference on Integrated Navigation Systems

2004 IEEE Aerospace and Electronic Systems Magazine  
Acknowledgments The support of the Survey Department of the Ministry of Transportation and Public Works is gratefully acknowledged.  ...  Acknowledgments The authors would like to acknowledge the invaluable assistance provided by Vladimir Branetz,, Mikhail Mikhailov and Juri Stishov of the RSC Energia.  ...  ( 2 ,2^ a n +b n (9) The corresponding strain energy (3) and work of inner stresses (5) are: The inner stresses in the i -layer can be expanded in the Fourier series.  ... 
doi:10.1109/maes.2004.1346941 fatcat:z6zxudmnzbfgziagfqln3emo5y

The 18th saint petersburg international conference on integrated navigation systems

2010 IEEE Aerospace and Electronic Systems Magazine  
Acknowledgments The support of the Survey Department of the Ministry of Transportation and Public Works is gratefully acknowledged.  ...  Acknowledgments The authors would like to acknowledge the invaluable assistance provided by Vladimir Branetz,, Mikhail Mikhailov and Juri Stishov of the RSC Energia.  ...  ( 2 ,2^ a n +b n (9) The corresponding strain energy (3) and work of inner stresses (5) are: The inner stresses in the i -layer can be expanded in the Fourier series.  ... 
doi:10.1109/maes.2010.5638804 fatcat:5fa2imjo4naavfgcdaju6lswvi

13th Saint Petersburg International Conference on Integrated Navigation Systems

M. Grishina
2006 IEEE Aerospace and Electronic Systems Magazine  
Acknowledgments The support of the Survey Department of the Ministry of Transportation and Public Works is gratefully acknowledged.  ...  Acknowledgments The authors would like to acknowledge the invaluable assistance provided by Vladimir Branetz,, Mikhail Mikhailov and Juri Stishov of the RSC Energia.  ...  ( 2 ,2^ a n +b n (9) The corresponding strain energy (3) and work of inner stresses (5) are: The inner stresses in the i -layer can be expanded in the Fourier series.  ... 
doi:10.1109/maes.2006.1705169 fatcat:xzwrwxgqvbgbjgudu75rvy7oui

Improved GNSS Carrier Phase Tracking for Hand Held Receivers [article]

Srinivas Bhaskar, University Of Calgary, University Of Calgary, Gérard Lachapelle, James Curran
2015
Pedestrian dynamics are characterized in the frequency domain in terms of power spectral densities and cumulative spectral densities.  ...  A study of the effects of pedestrian dynamics on GNSS signal parameters, namely carrier frequency and phase, is conducted.  ...  loop dynamic stress.  ... 
doi:10.11575/prism/26478 fatcat:mkucym3zxfdvxhhhweipbektze

The Federal Radionavigation Plan

WILLIAM K. MAY
1981 Navigation  
access in demanding environments.  ...  To meet safety-of-life requirements, human spaceflight retains ground-and space-based tracking via the NASA Space and Ground networks and ground-in-the-loop processing.  ...  Each GNSS system employs a constellation of satellites operating in conjunction with a network of ground stations.  ... 
doi:10.1002/j.2161-4296.1981.tb00771.x fatcat:uiqoj4rvxbb5znxcn3vu55lfsm

Design and Implementation of an RTK-based Vector Phase Locked loop in a GNSS Software Receiver [article]

Ahmad Shafaati, University Of Calgary, University Of Calgary, Gerard Jules Lachapelle, Tao Lin
2017
The focus of this thesis is to develop and test an innovative tracking loop with potentially better performance than existing loops in harsh environments.  ...  GNSS carrier phase tracking is very demanding and challenging.  ...  Precise GNSS positioning and navigation in degraded environments such as in forests and partly signal shaded areas have received limited attention because of the challenges of carrier phase tracking in  ... 
doi:10.11575/prism/25569 fatcat:ihq5g7dravac7pdxf3c4xsykcu

Sliding bifurcations in resonant inverters

Enrique Ponce, Luis Benadero, Abdelali El Aroudi, Luis Martinez-Salamero
2017 2017 14th International Multi-Conference on Systems, Signals & Devices (SSD)  
Conventional RAIM starts out by supposing a Gaussian measurement errors model with known means and variances. However, this assumption does not hold in dense urban environment.  ...  We use external information provided by a 3D GNSS simulation to characterize GNSS errors in urban areas.  ... 
doi:10.1109/ssd.2017.8167001 dblp:conf/IEEEssd/PonceBAM17 fatcat:6lbol63imjffhezjv6yc6cnheu

The GPS Assimilator: a Method for Upgrading Existing GPS User Equipment to Improve Accuracy, Robustness, and Resistance to Spoofing [article]

Brent M. Ledvina
2018
His research interests are in estimation and filtering, GNSS technology, GNSSbased study of the ionosphere and neutral atmosphere, and GNSS security and integrity. Jahshan A.  ...  His research interests are in development of small satellites, software-defined radio applications, and GNSS technologies.  ...  Here, each target signal is tracked, either independently or as part of a vector tracking loop.  ... 
doi:10.15781/t20863n8q fatcat:c62ds5zfpfhr5p4v2seysqpswy

Carrier Phase Prediction of Weak Signals for High-Accuracy Navigation [article]

Boxiong Wang, University Of Calgary, University Of Calgary, Mark Petovello
2015
The prediction method is developed and tested using GPS vector-based and GPS/IMU ultra-tight software receivers to generate predicted phase measurements.  ...  Positioning with and without using the prediction method is compared for the GPS vector-based receiver, and ultra-tightly coupled GPS/IMU receiver, and for an RTK/IMU loosely coupled system.  ...  After applying the improved RAIM algorithm on the predicted measurements, the benefits can be evaluated by tests in different environments. 6.  ... 
doi:10.11575/prism/25218 fatcat:r5yxyfcgvnffnlrhezo6sl2qqm

Air Transportation System Automation [chapter]

Satish C. Mohleji, Dean F. Lamiano, Sebastian V. Massimini
2009 Springer Handbook of Automation  
velocity vector from its present position to a position some time in the future.  ...  the airspace around the airport where there is no navigation guidance available in the form of vectors.  ... 
doi:10.1007/978-3-540-78831-7_67 fatcat:yo243p7pzbf6xccvp3atqrnnyi
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