International Journal of Distributed Sensor Networks, 2019 People have to move between indoor and outdoor frequently in city scenarios. The global navigation satellite system signal cannot provide reliable indoor positioning services.
Deyue Zou +7 more
doaj +1 more source
Global-Position Tracking Control of 3-D Bipedal Walking via Virtual Constraint Design and Multiple Lyapunov Analysis [PDF]
arXiv, 2021 A safety-critical measure of legged locomotion performance is a robot's ability to track its desired time-varying position trajectory in an environment, which is herein termed as "global-position tracking". This paper introduces a nonlinear control approach that achieves asymptotic global-position tracking for three-dimensional (3-D) bipedal robot ...
arxiv
Globally positive solutions of linear parabolic PDE's of second order with Robin boundary conditions [PDF]
Journal of Mathematical Analysis and Applications, vol. 209, issue
1, 1997, pages 47-59, 2017 It is shown that globally positive solutions of a linear second order parabolic partial differential equation on a bounded domain, with Robin boundary conditions, are unique up to multiplication by a positive constant.
arxiv +1 more source
THE PERFORMANCE ANALYSIS OF BDS POSITIONING IN NORDIC AREAS BASED ON THE SMARTPHONE [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022 Nowadays, the Global Navigation Satellite System (GNSS) is widely used in many applications. As a new system, China's BeiDou navigation system (BDS) is emerging in recent years.
C. Chen +6 more
doaj +1 more source
Globally positive solutions of linear parabolic partial differential equations of second order with Dirichlet boundary conditions [PDF]
Journal of Mathematical Analysis and Applications, vol. 226, issue
2, 1998, pages 326--347, 2017 It is shown that globally positive solutions of a linear second order parabolic partial differential equation on a bounded domain, with Dirichlet boundary conditions, are unique up to multiplication by a positive constant.
arxiv +1 more source
On Constancy of the Speed of Light in the Global Positioning System [PDF]
, 2015 The speed of light in the global positioning system (GPS) is theoretically investigated through the analysis of navigation equations together with metric tensors for light speed constancy.
arxiv +1 more source
Designing and developing a mobile application for indoor real-time positioning and navigation in healthcare facilities [PDF]
, 2022 Navigation portable applications have largely grown during the last years. However, the majority of them works just for outdoor positioning and routing, due to their architecture based upon Global Positioning System signals.
Gherardelli, Monica +3 more
core +1 more source
Vulnerability analysis of satellite-based synchronized smart grids monitoring systems [PDF]
, 2014 The large-scale deployment of wide-area monitoring systems could play a strategic role in supporting the evolution of traditional power systems toward smarter and self-healing grids. The correct operation of these synchronized monitoring systems requires
Ahmed faheem Zobaa +19 more
core +1 more source
Analysis of iridium-augmented GPS positioning performance
The Journal of Engineering, 2019 Although the global positioning system (GPS) has a series of advantages such as global and high precision, there are still many deficiencies, in many cases, GSP cannot meet the requirements of the positioning accuracy.
Liu Xiao, Zhang Lei
doaj +1 more source
Optimised design of next‐generation multiplexing schemes for Global Navigation Satellite Systems
IET Radar, Sonar & Navigation, 2023 Multilevel and multicarrier component signals are now common in many Global Navigation Satellite Systems challenging the employed multiplexing method that needs to be more flexible and powerful. In this work, the authors demonstrate how, by acting on two
Andrea Nardin +4 more
doaj +1 more source