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Design of Monitoring Framework for Malicious Hidden Process on CloudStack [PDF]

open access: yesJisuanji gongcheng, 2016
Most cloud platforms like CloudStack have no safety plug-in or function to protect the virtual machines.Aiming at this problem,this paper proposes a monitoring framework for malicious hidden process based on Xen virtual machine monitor on CloudStack ...
CUI Jingsong,TIAN Changyou,GUO Chi,YIN Xue
doaj   +1 more source

A Non-Linear Filtering Algorithm Based on Alpha-Divergence Minimization

open access: yesSensors, 2018
A non-linear filtering algorithm based on the alpha-divergence is proposed, which uses the exponential family distribution to approximate the actual state distribution and the alpha-divergence to measure the approximation degree between the two ...
Yarong Luo   +3 more
doaj   +1 more source

A bagging tree-based pseudorange correction algorithm for global navigation satellite system positioning in foliage canyons

open access: yesInternational Journal of Distributed Sensor Networks, 2021
Global navigation satellite system is indispensable to provide positioning, navigation, and timing information for pedestrians and vehicles in location-based services.
Fan Qin   +3 more
doaj   +1 more source

Predicting Long-Term Stability of Precise Oscillators under Influence of Frequency Drift

open access: yesSensors, 2018
High-performance oscillators, atomic clocks for instance, are important in modern industries, finance and scientific research. In this paper, the authors study the estimation and prediction of long-term stability based on convex optimization techniques ...
Weiwei Cheng, Guigen Nie
doaj   +1 more source

A Police and Insurance Joint Management System Based on High Precision BDS/GPS Positioning

open access: yesSensors, 2018
Car ownership in China reached 194 million vehicles at the end of 2016. The traffic congestion index (TCI) exceeds 2.0 during rush hour in some cities. Inefficient processing for minor traffic accidents is considered to be one of the leading causes for ...
Wenwei Zuo   +4 more
doaj   +1 more source

Performance evaluation of multi-GNSSs navigation in super synchronous transfer orbit and geostationary earth orbit

open access: yesSatellite Navigation, 2021
The autonomous navigation of the spacecrafts in High Elliptic Orbit (HEO), Geostationary Earth Orbit (GEO) and Geostationary Transfer Orbit (GTO) based on Global Navigation Satellite System (GNSS) are considered feasible in many studies.
Tao Shi, Xuebin Zhuang, Liwei Xie
doaj   +1 more source

Comparison of Satellite Repeat Shift Time for GPS, BDS, and Galileo Navigation Systems by Three Methods

open access: yesAlgorithms, 2019
The characteristic of the satellite repeat shift time can reflect the status of the satellite operation, and is also one of the key factors of the sidereal filtering multipath correction.
Yanxi Yang, Jinguang Jiang, Mingkun Su
doaj   +1 more source

CONCEPTUAL DESIGN OF MONITORING AND CONTROL SUBSYSTEM FOR GNSS GROUND STATION [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2007
The Global Navigation Satellite System (GNSS) becomes more important and is applied to various systems. Recently, the Galileo navigation system is being developed in Europe.
Seongkyun Jeong   +4 more
doaj   +1 more source

Earth and Rock-Filled Dam Monitoring by High-Resolution X-Band Interferometry: Gongming Dam Case Study

open access: yesRemote Sensing, 2019
Middle-sized earth- and rock-filled dams with clay cores continue to settle by approximately 0.5⁻1.5% of their height for approximately 1⁻3 years after their construction phase.
Tao Li   +8 more
doaj   +1 more source

Integrated GNSS Attitude Determination and Positioning for Direct Geo-Referencing

open access: yesSensors, 2014
Direct geo-referencing is an efficient methodology for the fast acquisition of 3D spatial data. It requires the fusion of spatial data acquisition sensors with navigation sensors, such as Global Navigation Satellite System (GNSS) receivers.
Nandakumaran Nadarajah   +2 more
doaj   +1 more source

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