Results 41 to 50 of about 20,023,457 (377)

A New Weighting Approach with Application to Ionospheric Delay Constraint for GPS/GALILEO Real-Time Precise Point Positioning

open access: yesApplied Sciences, 2018
The real-time precise point positioning (RT PPP) technique has attracted increasing attention due to its high-accuracy and real-time performance. However, a considerable initialization time, normally a few hours, is required in order to achieve the ...
Tianjun Liu   +4 more
doaj   +1 more source

Approximation-Avoidance-Based Robust Quantitative Prescribed Performance Control of Unknown Strict-Feedback Systems

open access: yesMathematics, 2022
In this article, we propose a robust quantitative prescribed performance control (PPC) strategy for unknown strict-feedback systems, capable of quantitatively designing convergence time and minimizing overshoot.
Yin’an Feng, Xiangwei Bu
doaj   +1 more source

Multi-Robot Leader Grouping Consistent Formation Control Method Research with Low Convergence Time Based on Nonholonomic Constraints

open access: yesApplied Sciences, 2022
Aiming at the formation and maintenance of the multiple formations of nonholonomic constrained multi-robots, a leader-follower formation control method under the grouping consistency is proposed on the trajectory tracking of a nonholonomic constrained ...
Hongchao Zhuang   +3 more
doaj   +1 more source

Convergence of space and time through GIS [PDF]

open access: yesGlasnik Srpskog Geografskog Društva, 2023
Human's exploration of space has changed over time, depending on the expansion of the limits of his knowledge. Space is infinite, but it is limited by the possibility of human knowledge. The original man knew very little about the space in which
Valjarević Aleksandar   +1 more
doaj   +1 more source

Convergence of the empirical spectral measure of unitary Brownian motion [PDF]

open access: yes, 2018
Let $\{U^N_t\}_{t\ge 0}$ be a standard Brownian motion on $\mathbb{U}(N)$. For fixed $N\in\mathbb{N}$ and $t>0$, we give explicit bounds on the $L_1$-Wasserstein distance of the empirical spectral measure of $U^N_t$ to both the ensemble-averaged spectral
Meckes, Elizabeth, Melcher, Tai
core   +3 more sources

Iterative time reversal with tunable convergence [PDF]

open access: yesElectronics Letters, 2011
4 pages, 3 figures, published on Electronics ...
Taddese, Biniyam Tesfaye   +3 more
openaire   +2 more sources

Improving the Convergence Period of Adaptive Data Rate in a Long Range Wide Area Network for the Internet of Things Devices

open access: yesEnergies, 2021
A Long-Range Wide Area Network (LoRaWAN) is one of the most efficient technologies and is widely adopted for the Internet of Things (IoT) applications. The IoT consists of massive End Devices (EDs) deployed over large geographical areas, forming a large ...
Khola Anwar   +8 more
doaj   +1 more source

Design optimisation of low earth orbit constellation based on BeiDou Satellite Navigation System precise point positioning

open access: yesIET Radar, Sonar & Navigation, 2022
The use of low earth orbit (LEO) satellites to enhance the performance of global navigation satellite system navigation and positioning services has become a popular research topic.
Jing Liu   +5 more
doaj   +1 more source

Assessing the Performance of Multipath Mitigation for Multi-GNSS Precise Point Positioning Ambiguity Resolution

open access: yesRemote Sensing, 2023
Real-time GNSS PPP is commonly used for high-precision positioning, but its utility is constrained by factors that necessitate extended convergence periods for a dependable accuracy.
Kai Zheng   +4 more
doaj   +1 more source

Abrupt Convergence and Escape Behavior for Birth and Death Chains [PDF]

open access: yes, 2009
We link two phenomena concerning the asymptotical behavior of stochastic processes: (i) abrupt convergence or cut-off phenomenon, and (ii) the escape behavior usually associated to exit from metastability.
A. Bovier   +53 more
core   +3 more sources

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