Results 21 to 30 of about 630 (169)
Deployment Strategy Analysis for Underwater Geodetic Networks
Journal of Marine Science and Engineering, 2023 Seafloor geodetic network (SGN) is the foundation for building an underwater positioning, navigation and timing (PNT) system. Traditional network deployment mainly focuses on the deployment of underwater sensor network nodes.
Wei Huang +3 more
doaj +1 more source
, 2022 The microstructures of concentrated aqueous solutions of n-butyl(n-dodecyl)phosphate (BDoP) and n-hexyl(n-dodecyl)phosphate (HDoP) anions, as asymmetric double-chain surfactants, were studied using X-ray diffraction and Raman scattering techniques.
Suzuki, K +3 more
core +1 more source
Lightweight GPS-tags, one giant leap for wildlife tracking? An assessment approach. [PDF]
PLoS ONE, 2011 Recent technological improvements have made possible the development of lightweight GPS-tagging devices suitable to track medium-to-small sized animals.
Mariano R Recio +4 more
doaj +1 more source
Formation Satellite Reconstruction Strategy Based on NSGA-II Algorithm
Shanghai Jiaotong Daxue xuebao, 2021 Aimed at the problem of avoidance strategy of formation satellites when facing the threat of space debris, a non-dominated sorting genetic algorithm (NSGA-II) is improved and used to code satellites. Besides, the improved differential evolution algorithm
SUN Hongqiang +2 more
doaj +1 more source
, 2020 Perinatal outcomes by BMI category when GDM/HDOP was adjusted (in addition to age, PCOS, parity and type of COH).
Zhongyuan Li (5615753) +5 more
core +1 more source
Journal of Advanced Transportation, 2022 Automated valet parking (AVP) has attracted much attention as the entry point to autonomous driving. In an indoor environment, high-precision positioning systems are essential for AVP.
Shengchuan Jiang +4 more
doaj +1 more source
Analysis of a HAPS-Aided GNSS in Urban Areas Using a RAIM Algorithm
IEEE Open Journal of the Communications Society, 2023 The global averaged civilian positioning accuracy is still at meter level for all existing Global Navigation Satellite Systems (GNSSs), and the performance is even worse in urban areas. At lower altitudes than satellites, high altitude platform stations (
Hongzhao Zheng +2 more
doaj +1 more source
A systematic review of load control in football using a Global Navigation Satellite System (GNSS)
Motriz: Revista de Educacao Fisica, 2020 Aim: This systematic review aimed to evaluate various Global Navigation Satellite Systems (GNSS) receivers, based on the frequency applied, the number of satellites available, and the dilution of precision (DOP) presented to measure football player load
Vitor Ayres Principe +2 more
doaj +1 more source
How much can we trust GPS wildlife tracking? An assessment in semi-free-ranging Crested Ibis Nipponia nippon [PDF]
PeerJ, 2018 GPS tracking has been increasingly used for wildlife studies in recent decades, but its performance has not been fully assessed, especially for newly developed lightweight transmitters.
Dongping Liu +4 more
doaj +2 more sources
Mathematics, 2023 User equipment (UE) location estimation in emerging 5G/B5G/6G Ultra-Dense Networks (UDNs) is a breakthrough technology in future wireless info-communication ecosystems.
Grigoriy Fokin, Andrey Koucheryavy
doaj +1 more source