Results 1 to 10 of about 27,207,672 (143)

REAL-TIME TROPOSPHERIC PRODUCT ESTABLISHMENT AND ACCURACY ASSESSMENT IN CHINA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
Tropospheric delay has always been an important issue in Global Navigation Satellite System (GNSS) processing. Empirical tropospheric delay models are difficult to simulate complex and volatile atmospheric environments, resulting in poor accuracy of the ...
M. Chen   +9 more
doaj   +1 more source

INDOOR SPACE LOCATION MODEL BASED ON LOCATION SERVICE [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
Location is the basis for the realization of location services, the integrity of the location information and its way of representation in indoor space model directly restricts the quality of location services.
Y. Zhou   +4 more
doaj   +1 more source

DGS-HSA: A Dummy Generation Scheme Adopting Hierarchical Structure of the Address

open access: yesApplied Sciences, 2020
With the increasing convenience of location-based services (LBSs), there have been growing concerns about the risk of privacy leakage. We show that existing techniques fail to defend against a statistical attack meant to infer the user’s location privacy
Mingzhen Li   +8 more
doaj   +1 more source

Statistical Multipath Model Based on Experimental GNSS Data in Static Urban Canyon Environment

open access: yesSensors, 2018
A deep understanding of multipath characteristics is essential to design signal simulators and receivers in global navigation satellite system applications.
Yuze Wang, Xin Chen, Peilin Liu
doaj   +1 more source

Memory-Saving Implementation of High-Speed Privacy Amplification Algorithm for Continuous-Variable Quantum Key Distribution

open access: yesIEEE Photonics Journal, 2018
Privacy amplification is an indispensable procedure to share secure secret key between legitimate parties in quantum key distribution (QKD) because a portion of bits are still leaked to eavesdropper Eve after the secret reconciliation. Here, we propose a
Dengwen Li   +4 more
doaj   +1 more source

Research on privacy protection of dummy location interference for Location-Based Service location

open access: yesInternational Journal of Distributed Sensor Networks, 2022
Location privacy refers to the individual private and sensitive location information involved in the user’s access to location services. Achieving location privacy protection has become a hot topic of research.
Ai Zhang, XiaoHui Li
doaj   +1 more source

Location Privacy Preservation Mechanism for Location-Based Service With Incomplete Location Data

open access: yesIEEE Access, 2020
The Location-Based Service has been widely used for mobile communication networks and location systems. However, privacy disclosure for incomplete collection location data in LBS was ignored in most of the existing works.
Xudong Yang   +3 more
doaj   +1 more source

Location Privacy and Its Applications: A Systematic Study

open access: yesIEEE Access, 2018
This paper surveys the current research status of location privacy issues in mobile applications. The survey spans five aspects of study: the definition of location privacy, attacks and adversaries, mechanisms to preserve the privacy of locations ...
Bo Liu   +4 more
doaj   +1 more source

Indoor Multi-Dimensional Location GML and Its Application for Ubiquitous Indoor Location Services

open access: yesISPRS International Journal of Geo-Information, 2016
The Open Geospatial Consortium (OGC) Geography Markup Language (GML) standard provides basic types and a framework for defining geo-informational data models such as CityGML and IndoorGML, which provide standard information models for 3D city modelling ...
Qing Zhu   +6 more
doaj   +1 more source

Providing Customised Information Panel Content Based on User Behavioral Patterns

open access: yesMendel, 2018
Although mobile applications are commonly using user location and behavior to provide relevant content, public information panels usually lack the ability to adjust the content for a particular user or a group of users.
Ivo Pisarovic   +3 more
doaj   +1 more source

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