Global Navigation Satellite System (GNSS) is the standard generic term for satellite navigation systems that provide autonomous geospatial positioning with global coverage. As of 2007, the United States NAVSTAR Global Positioning System (GPS) is the only fully operational GNSS. Based on bandwidth optimization criterion, the GPS receiver is proposed for solving the carrier/code phase tracking pr...

The present invention provides a method and a device for providing superior differential GPS positioning data. The system includes a group of GPS receiving ground stations covering a wide area of the Earth’s surface. Unlike other differential GPS systems wherein the known position of each ground station is used to geometrically compute an ephemeris for each GPS satellite, the present system uti...

This paper deals with the issue of incorporating pseudolite measurements into an integrated Global Positioning System/ Inertial Navigation System ~GPS/INS! positioning and attitude system with a view to improving signal availability, solution reliability, and accuracy in a localized area. Existing GPS/INS systems can overcome inherent shortcomings of each of the navigation technologies ~line-of...

We present an application for analyzing temporal and spatial interaction in an Association Network environment based on integrating Global Positioning Systems (GPS) Data, RDF Metadata and Data Mining. We argue that GPS data contains important information about relationships between people, through location and time, and can ultimately provide ideas about their association level and activities. ...

We propose to develop “SuomiNet”, a universitybased, real-time, national Global Positioning System (GPS) network for atmospheric research and education. The proposed network, named to honor meteorological satellite pioneer Verner Suomi, will exploit the recently-shown ability of ground-based GPS receivers to make thousands of accurate upper and lower atmospheric measurements per day. SuomiNet’s...

Master of Electrical Engineering Program Cornell University Design Project Report Project Title: Ionospheric irregularities as observed from the GPS reference station in Singapore, March 2002 Author: Pongabha Abhakara Abstract: In regions near the geomagnetic equator, the phenomenon of ionospheric irregularities that causes scintillations in Global Positioning System (GPS) signals occurs freque...

The Global Navigation Satellite System (GNSS) plays an important role in positioning and navigation applications. The Global Positioning Service (GPS) augmentation is to achieve more reliable and accurate navigation solutions. The presently available traditional GNSS receivers are hardware based receivers which are not flexible and cannot be easily upgraded to acquire the signals from other GNS...

In this paper, optimal placement of Phasor Measurement Unit (PMU) using Global Positioning System (GPS) is discussed. Ant Colony Optimization (ACO), Simulated Annealing (SA), Particle Swarm Optimization (PSO) and Genetic Algorithm (GA) are used for this problem. Pheromone evaporation coefficient and the probability of moving from state x to state y by ant are introduced into the ACO. The modifi...

In a network of thousands of nodes, usually densely deployed, it is unlikely that the designer will determine the position of each node. To process sensor data, however, it is necessary to know where the data come from. Equipping every node with a global positioning system (GPS) is currently a costly (in volume, money, and power consumption) solution. Instead, we can estimate node positions rel...

Several ways to estimate the position of a WirelessSensor-Network (WSN) node have been discussed in the past years. Unlike in outdoor solutions where the Global Positioning System (GPS) could be used in most applications, a general solution for indoor usage has not been found. The few existing indoor solutions on the market are highly specialized and rely on infrastructure or on very expensive ...