Results 11 to 20 of about 1,127,374 (291)

OLBS: Offline Location Based Services [PDF]

open access: yes2011 Fifth International Conference on Next Generation Mobile Applications, Services and Technologies, 2011
Most existing location-based services rely on ubiquitous connectivity to deliver location-based contents to the users. However, connectivity is not available anywhere at anytime even in urban centres. Underground, indoors, remote areas, and foreign countries are examples situations where users commonly do not have guaranteed connectivity but could ...
Pedro Coelho   +2 more
core   +4 more sources

Using CryptoBin Encryption Algorithm in Military Applications [PDF]

open access: yesInternational Journal of Telecommunications, 2021
In recent years, there has been a significant increase in the use of location-based solutions. As a result, data encryption has become increasingly important in order to en-sure privacy and confidentiality, especially in all domains, military and civil ...
Hamed Zied, Ahmed Eltengy
doaj   +1 more source

Wireless Localization Method Using the Distributed Iterative Stochastic-Resonance-Based Signal Spectral Combination

open access: yesIEEE Access, 2022
In this study, a kind of nonlinear stochastic-resonance (SR) signal enhancement technique combined with the distributed receiving array signal power spectrum combination approach is proposed.
Di He   +3 more
doaj   +1 more source

Privacy through uncertainty in location-based services [PDF]

open access: yes, 2013
Location-Based Services (LBS) are becoming more prevalent. While there are many benefits, there are also real privacy risks. People are unwilling to give up the benefits - but can we reduce privacy risks without giving up on LBS entirely?
Kuijpers, Bart   +16 more
core   +1 more source

Hall of Mirrors: A Novel Strategy to Address Locality in Geocoded-Based PoI Private Queries

open access: yesIEEE Access, 2022
Location privacy techniques try to protect user’s information by altering, aggregating or generalizing it. Geographical codification techniques, like Geohash, can be used to protect individual locations altering the precision of the location so it
Pedro Wightman   +3 more
doaj   +1 more source

Location-based services–the market : success factors and emerging trends from an exploratory approach

open access: yes, 2021
By measuring the possibilities of enterprises linking location-based services (LBS) to regional and local content of interest, research found a tremendous lack of knowledge, how media enterprises–as well as content providers–in- and outside legacy media ...
Rau, Harald,   +4 more
core   +1 more source

3-D Spatial Spectrum Fusion Indoor Localization Algorithm Based on CSI-UCA Smoothing Technique

open access: yesIEEE Access, 2018
In the indoor wireless localization environment, the non-line-of-sight receiving signal and low signal-to-noise ratio are usually strongly dominant issues due to the heavy existence of multipath signals, which also restrict the final wireless ...
Di He   +5 more
doaj   +1 more source

BDS-3 Integrity Risk Modeling and Probability Evaluation

open access: yesRemote Sensing, 2022
Focusing on the global integrity monitoring performance of the BDS-3, the integrity failure model and effect analysis (IFMEA) of the system space segment and the ground control segment were carried out, and the system integrity risk tree model was ...
Lei Chen   +9 more
doaj   +1 more source

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

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