Results 11 to 20 of about 2,433,358 (250)

Experimental coder/decoder of dicode pulse position modulation. [PDF]

open access: yes, 2009
Dicode Pulse Position Modulation has been proposed as an alternative coding scheme which has many advantages over previous Pulse Position Modulation formats.
Charitopoulos, Romanos   +1 more
core   +4 more sources

Position-dependent random maps in one and higher dimensions [PDF]

open access: yes, 2005
A random map is a discrete-time dynamical system in which one of a number of transformations is randomly selected and applied on each iteration of the process.
Wael Bahsoun (1258407)   +1 more
core   +6 more sources

Characterization of Signal Quality Monitoring Techniques for Multipath Detection in GNSS Applications

open access: yesSensors, 2017
The performance of Signal Quality Monitoring (SQM) techniques under different multipath scenarios is analyzed. First, SQM variation profiles are investigated as critical requirements in evaluating the theoretical performance of SQM metrics.
Ali Pirsiavash   +2 more
doaj   +1 more source

Spoofing Detection Using GNSS/INS/Odometer Coupling for Vehicular Navigation

open access: yesSensors, 2018
Location information is one of the most vital information required to achieve intelligent and context-aware capability for various applications such as driverless cars. However, related security and privacy threats are a major holdback.
Ali Broumandan, Gérard Lachapelle
doaj   +1 more source

Combining Multichannel RSSI and Vision with Artificial Neural Networks to Improve BLE Trilateration

open access: yesSensors, 2022
The demands for accurate positioning and navigation applications in complex indoor environments such as emergency call positioning, fire-fighting services, and rescue operations are increasing continuously.
Sharareh Naghdi, Kyle O’Keefe
doaj   +1 more source

Positive Announcements [PDF]

open access: yesStudia Logica, 2020
Arbitrary public announcement logic (APAL) reasons about how the knowledge of a set of agents changes after true public announcements and after arbitrary announcements of true epistemic formulas. We consider a variant of arbitrary public announcement logic called positive arbitrary public announcement logic (APAL+), which restricts arbitrary public ...
Hans van Ditmarsch   +2 more
openaire   +2 more sources

Diversity Gain through Antenna Blocking

open access: yesInternational Journal of Antennas and Propagation, 2012
As part of the typical usage mode, interaction between a handheld receiver antenna and the operator's RF absorbing body and nearby objects is known to generate variability in antenna radiation characteristics through blocking and pattern changes.
V. Dehghanian, J. Nielsen, G. Lachapelle
doaj   +1 more source

Spatial Characterization of GNSS Multipath Channels

open access: yesInternational Journal of Antennas and Propagation, 2012
There is a growing interest in detecting and processing Global Navigation Satellite System (GNSS) signals in indoors and urban canyons by handheld devices.
Hatef Keshvadi   +2 more
doaj   +1 more source

Evalutions of strengths, impact and energy capacity of two-way concrete slabs incorprating waste plastic

open access: yesJournal of King Saud University: Engineering Sciences, 2021
This work is about investigated the effectiveness of inclusion of local waste, represented by plastic water drink bottles caps (CPPA), in the concrete as a partial substitute for coarse aggregates.
Sheelan Mahmoud Hama
doaj   +1 more source

Kinematic Zenith Tropospheric Delay Estimation with GNSS PPP in Mountainous Areas

open access: yesSensors, 2021
The use of global navigation satellite systems (GNSS) precise point positioning (PPP) to estimate zenith tropospheric delay (ZTD) profiles in kinematic vehicular mode in mountainous areas is investigated.
Paul Gratton   +3 more
doaj   +1 more source

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