Results 31 to 40 of about 26,653,868 (263)

A State Optimization Model Based on Kalman Filtering and Robust Estimation Theory for Fusion of Multi-Source Information in Highly Non-linear Systems

open access: yesSensors, 2019
Consistent state estimation is a vital requirement in numerous real life applications from localization to multi-source information fusion. The Kalman filter and its variants have been successfully used for solving state estimation problems.
Muhammad Adeel Akram   +4 more
doaj   +1 more source

Vector Graph Assisted Pedestrian Dead Reckoning Using an Unconstrained Smartphone

open access: yesSensors, 2015
The paper presents a hybrid indoor positioning solution based on a pedestrian dead reckoning (PDR) approach using built-in sensors on a smartphone. To address the challenges of flexible and complex contexts of carrying a phone while walking, a robust ...
Jiuchao Qian   +4 more
doaj   +1 more source

Differentially Private Location Privacy-preserving Scheme withSemantic Location [PDF]

open access: yesJisuanji kexue, 2021
How to realize more reasonable noise addition in location differential privacy-preserving is a hot topic issue.However,adding the same amount of noise in different locations will result in the decrease of service availability and privacy preservation.To ...
ZHANG Xue-jun, YANG Hao-ying, LI Zhen, HE Fu-cun, GAI Ji-yang, BAO Jun-da
doaj   +1 more source

Improvement of Noise Uncertainty and Signal-To-Noise Ratio Wall in Spectrum Sensing Based on Optimal Stochastic Resonance

open access: yesSensors, 2019
Noise uncertainty and signal-to-noise ratio (SNR) wall are two very serious problems in spectrum sensing of cognitive radio (CR) networks, which restrict the applications of some conventional spectrum sensing methods especially under low SNR ...
Di He   +4 more
doaj   +1 more source

User location privacy protection mechanism for location-based services

open access: yesDigital Communications and Networks, 2021
With the rapid development of the Internet of Things (IoT), Location-Based Services (LBS) are becoming more and more popular. However, for the users being served, how to protect their location privacy has become a growing concern.
Yan He, Jiageng Chen
doaj   +1 more source

Location Based Services

open access: yesElektronika ir Elektrotechnika, 2004
The overview of various location solutions such GSM and others technology represents in this paper. In the process of developinglocation based services are involved mobile network operators and the companies that produce the equipment and software. The mainconcerns about regulations are “privacy requirements” and “third party access to location data ...
V. Liutkauskas, D. Matulis, R. Plėštys
  +5 more sources

Differential Privacy Preservation for Location Semantics

open access: yesSensors, 2023
With the rapid development of intelligent mobile terminals and communication technologies, location-based services (LBSs) have become an essential part of users’ lives. LBS providers upload and share the collected users’ location data.
Liang Yan   +5 more
doaj   +1 more source

A Novel Nonlinear Stochastic-Resonance-Enhanced Acceleration Data Processing Approach [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Smartphones are indispensable tools in modern social life, and they can be used for online shopping, electronic payment, gaming, and navigation. In particular, low-cost inertial measurement unit (IMU) sensors are widely integrated into smartphones, so ...
X. Gao   +5 more
doaj   +1 more source

GLPS: A Geohash-Based Location Privacy Protection Scheme

open access: yesEntropy, 2023
With the development of mobile applications, location-based services (LBSs) have been incorporated into people’s daily lives and created huge commercial revenues.
Bin Liu   +3 more
doaj   +1 more source

Advanced location-based services

open access: yesComputer Communications, 2008
This special issue of Computer Communications presents state-of-the-art research and applications in the area of location-based services (LBS). Initial location-based services entered the market around the turn of the millennium and for the greater part appeared in the form of restaurant finders and tourist guides, which never gained widespread user ...
Miguel A. Labrador   +2 more
openaire   +4 more sources

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