Results 1 to 10 of about 249,513 (267)

2D SnS2—A Material for Impedance-Based Low Temperature NOx Sensing?

open access: yesProceedings, 2017
The sensor signal of tin disulfide (SnS2), a two-dimensional (2D) group-IV dichalcogenide, deposited as a film on a conductometric transducer is investigated at 130 °C. The focus is on the detection of the total NOx concentration.
Daniela Schönauer-Kamin   +4 more
doaj   +1 more source

A signals of opportunity based cooperative navigation network [PDF]

open access: yesProceedings of the IEEE 2009 National Aerospace & Electronics Conference (NAECON), 2009
With the advent of advanced wireless standards has come the ability to address more sophisticated problems. One such issue is to provide robust navigation in challenging environments. Our approach to develop a signals of opportunity (SoOP) based cooperative navigation network that has the potential to provide improved performance and extend coverage ...
Michael A. Enright, Christopher N. Kurby
openaire   +1 more source

Fusion of SoOp, photogrammetry and 3D map for indoor positioning system on smart devices

open access: yesAlexandria Engineering Journal
The growing demand for Indoor Location-Based Services (ILBS) highlights the need for accurate and infrastructure-free Indoor Positioning Systems (IPS), as traditional Global Navigation Satellite Systems (GNSS) usually lack accessibility indoors.
Yuan Yang, Charles Toth
doaj   +1 more source

Nanomaterial-Assisted Signal Enhancement of Hybridization for DNA Biosensors: A Review

open access: yesSensors, 2009
Detection of DNA sequences has received broad attention due to its potential applications in a variety of fields. As sensitivity of DNA biosensors is determined by signal variation of hybridization events, the signal enhancement is of great significance ...
Minqiang Li   +7 more
doaj   +1 more source

Comprehensive Data Analysis Approach for Appropriate Scheduling of Signal Timing Plans

open access: yesFuture Transportation, 2022
Improperly scheduled signal timing plans are one of the main reasons for reduced efficiency of traffic signals at coordinated urban arterials. Recently, most urban arterial roads are equipped with intelligent transportation systems devices capable of ...
Nemanja Dobrota   +3 more
doaj   +1 more source

A research on low-earth-orbit signal-of-opportunity interference suppression algorithm based on adaptive signal iterative subspace projection technique

open access: yesFrontiers in Physics
Signal-of-Opportunity (SOP) positioning based on Low-Earth-Orbit (LEO) constellations has gradually become a research hotspot. LEO satellite SOP positioning possess strong anti-jamming capabilities due to their large quantity, wide spectral coverage, and
Lihao Yao   +10 more
doaj   +1 more source

Quad channel software defined receiver for passive radar application

open access: yesArchives of Electrical Engineering, 2017
In recent times the growing utilization of the electromagnetic environment brings the passive radar researches more and more to the fore. For the utilization of the wide range of illuminators of opportunity the application of wideband radio receivers is ...
Pető Tamás, Seller Rudolf
doaj   +1 more source

A simple crowdsourced delay-based traffic signal control.

open access: yesPLoS ONE, 2020
Current transportation management systems rely on physical sensors that use traffic volume and queue-lengths. These physical sensors incur significant capital and maintenance costs.
Vinayak Dixit   +3 more
doaj   +1 more source

Signals of Opportunity: Using Signal Defined Radio to Identify Potential Candidate

open access: yesRepüléstudományi Közlemények, 2019
This paper deals with the prospect of using cellular network signals as one of the candidates from the signals of opportunity as a supplementary or alternative source for navigation and positioning via onboard software defined radio. A low-cost system for modelling GSM coverage over a particular area is proposed.  
Košuda, Marek, Szabo, Stanislav
openaire   +3 more sources

Target Detection and Localization Using Non-Cooperative Frequency Agile Phased Array Radar Illuminator

open access: yesIEEE Access, 2019
Recently, passive bistatic radar (PBR) has become an emerging technology because it allows target detection and localization with advantages of low cost, covert detection, low vulnerability to electronic jamming and high valuable counter to stealth ...
Panhe Hu, Qinglong Bao, Zengping Chen
doaj   +1 more source

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