Results 81 to 90 of about 11,108 (198)

Secure and Efficient Multicast Content Distribution

IEEE Access
This paper proposes a multicast content distribution method over quantum key distribution (QKD) networks that improves delivery latency and resilience to link bandwidth limitations through mesh network design, while also contributing to reduced key ...
Masahide Sasaki, Kazuhisa Matsuzono, Masaru Fukushima, Mikio Fujiwara   +3 more
doaj   +1 more source

Noise immunity of a binary phase modulated signal demodulator with adaptive configuration change of decision boundaries in a multipath channel

Омский научный вестник
The article considers the possibilities of a coherent phase-modulated binary signal demodulator in a multipath channel with adaptive rotation of a signal constellation.
G. M. Sidelnikov
doaj   +1 more source

Detecting changes in along-path HF propagation during the April 2024 total solar eclipse with radio amateurs and low-cost instrumentation

Frontiers in Astronomy and Space Sciences
The total solar eclipse of April 8, 2024 presented a uniquely favorable circumstance for radio science. The Moon’s shadow passed near Canadian time standard station CHU, which transmits in the high frequency (HF, i.e., 3–30 MHz) band.
Maris Usis, Adam Goodman, Laura Schwartz, Laura Schwartz, David Kazdan, Kristina Collins, Kristina Collins, John Gibbons, Shashank Sastry, Lucy Ayres, Christopher Brault, Seth Byas, Michael Dompke, Michelle Dowell, Rowan Eggert, Aras Erdag, James Ervin, Dave Goodwin, Scarlett Nelson, Stephen Nichols, Olivia Tulgetske, Christian Zorman   +21 more
doaj   +1 more source

Multipath traffic splitting algorithm based on adaptive granularity

Tongxin xuebao, 2015
Aiming at the dilemma between load balancing and packet reordering in multipath routing,an adaptive dynamic multipath traffic splitting(ADTS) algorithm was proposed.The algorithm classified Internet flows into two categories:the aggressive and the normal
Peng WANG, Ju-long LAN, Shu-qiao CHEN
doaj  

Assessing the Quality of GNSS Observations for Permanent Stations in Mexico (2020–2023)

Geomatics
A quality assessment of Global Navigation Satellite System (GNSS) observations was conducted for 95 Continuously Operating Reference Stations (CORSs) across Mexico over the period 2020–2023 using the ANUBIS software package.
Rosendo Romero-Andrade, Karan Nayak, Rafaela Mirasol Llanes-Hernández, Norberto Alcántar-Elizondo, Tiojari Dagoberto Guzmán-Galindo, Yedid Guadalupe Zambrano-Medina   +5 more
doaj   +1 more source

Ghost Removal from Forward-Scan Sonar Views near the Sea Surface for Image Enhancement and 3-D Object Modeling

Remote Sensing
Underwater sonar is the primary remote sensing and imaging modality within turbid environments with poor visibility. The two-dimensional (2-D) images of a target near the air–sea interface (or resting on a hard seabed), acquired by forward-scan sonar ...
Yuhan Liu, Shahriar Negahdaripour
doaj   +1 more source

An In-Depth UAS-PPK Georeferencing Analysis at Different Flight Heights for an Urban Area

IEEE Access
Acquiring UAS images in urban environments presents a significant importance for various applications but presents challenges, particularly with flight missions and the reliability of the Global Navigation Satellite System (GNSS) signal.
Cristina-Oana Miron, Valeria-Ersilia Oniga, Ana-Maria Loghin, Sorin Nistor, Constantin Chirila, Anca-Alina Lazar, Mihaela Macovei   +6 more
doaj   +1 more source

Investigation of Water and Mud Effects on the Propagation of Real 5G Signal by Using the Reverberation Chamber

IEEE Access
We investigated the propagation condition in a particular environment, such as an area covered by water or mud. In particular, we analyzed the effect on signal propagation in a fifth-generation (5G) wireless communication system in that scenario.
Luca Bastianelli, Riccardo Diamanti, Alfredo de Leo, Emanuel Colella, Michele Colombo, Valter Mariani Primiani, Franco Moglie, Davide Micheli   +7 more
doaj   +1 more source

Methods for Anomalous Azimuth Estimate Censoring in Small Element Antenna Arrays

Известия высших учебных заведений России: Радиоэлектроника, 2017
There are abnormal azimuth estimates caused by multipath propagation and adjacent signal spectra overlapping in azimuth  estimates of radio source created by radio monitoring complexes in  broad band.
M. E. Shevchenko, V. N. Malyshev, D. O. Zadirako, D. N. Faizullina, N. S. Stenyukov, M. S. Shmyrin   +5 more
doaj  

Multi-path routing algorithm in WSN using an improvedparticle swarm optimization

Journal of Measurement Science and Instrumentation, 2019
To slove the problems of constrained energy and unbalanced load of wireless sensor network（WSN） nodes, a multipath load balancing routing algorithm based on neighborhood subspace cooperation is proposed.
LI Hui-ling, DU Yong-wen, XU Ning
doaj