Stand-Alone and Hybrid Positioning Using Asynchronous Pseudolites

Stand-Alone and Hybrid Positioning Using Asynchronous Pseudolites

global navigation satellite system (GNSS) receivers are usually unable to achieve satisfactory performance in difficult environments, such as open-pit mines, urban canyons and indoors. Pseudolites have the potential to extend GNSS usage and significantly improve receiver performance in such environments by providing additional navigation signals. This also applies to asynchronous pseudolite sys...

Stand-Alone Satellite-Based Global Positioning

Assessing the Accuracy of Underground Positioning Using Pseudolites

Dr. William R Michalson is an Associate Professor in the Electrical and Computer Engineering Department at Worcester Polytechnic Institute, where he also directs the Satellite Navigation Laboratory. The majority of his research focuses on the development, test, and evaluation of GPS integrity monitoring algorithms, with an emphasis on integrity monitoring for sole-means of navigation and precis...

Optimizing Design of Stand-alone Hybrid Solar Micro-CHP ‎Systems Using LUS Based Particle Swarm Optimization ‎Algorithm ‎

Utilizing the combined cooling, heating and power generation (CHP) systems to produce cooling, heat and electricity is growing rapidly due to their high efficiency and low emissions in commercial and industrial applications. In conventional CHP systems the deficit of the system power can be purchased from the grid. However, this system cannot be used as the standalone application. The hybrid so...

Robust optimal sizing of a hybrid energy stand-alone system

This paper deals with the optimal design of a stand-alone hybrid system composed of wind turbines, solar photovoltaic panels and batteries. To compensate for a possible lack of energy from these sources, an auxiliary fuel generator guarantees to meet the demand in every case but its use induces important costs. We have chosen a two-stage robust approach to take account of the stochastic behavio...