The Global Positioning System (GPS) enables precise positioning anywhere on earth with a precision of a few millimetres, if an appropriate reference frame and positioning infrastructure is in place. This framework and infrastructure in Ireland is known as IRENET95, and is a precise realisation of the European Terrestrial Reference System, ETRS89, resulting in European Terrestrial Reference Fram...

The integration of Global Navigation Satellite Systems (GNSS) carrier phases with Inertial Navigation System (INS) measurements is essential to provide accurate and continuous position, velocity and attitude information, however it is necessary to fix ambiguities rapidly and reliably to obtain high accuracy navigation solutions. In this paper, we present the notion of combining the Global Posit...

Location-based services (LBS) provide useful information to users based on the current user location or a given location. Therefore, one of the key techniques for LBS development is positioning, or identifying the coordinate of the spot where the user is currently located. For outdoor LBS, the GPS (Global Positioning System) provides a general solution for positioning. However, discovering a ge...

In this paper, we describe Wi-Fi based indoor positioning system solution that works without GPS. The solution allows to locate user in office-spaces and warehouses, and requires only an

Global Positioning System (GPS) based aircraft landing is a methodology still not in use today despite the widespread use of GPS. This is primarily because a standard single frequency Global Positioning System (GPS) receiver provides a positioning accuracy of approximately 4-20 m which is not acceptable by aviation standards for precision landings. The accuracy of GPS can be further enhanced wi...

The Global Positioning System, GPS technology has been widely used in positioning and attitude determination. It is well known that the accuracy, availability and reliability of the positioning results are heavily dependent on the number and geometric distribution of tracked GPS satellites. Because of this limitation, in some situations, such as in urban canyons, underground space or inside of ...

Despite of widespread usage of Global Positioning System (GPS), this system is considered inefficient for indoor areas. Although the most prominent positioning system is Global Positioning System, this system uses some electromagnetic waves which are unable to pass thick obstacles such as concrete roofs and trees [1]. Thus, it cannot be considered as a robust infrastructure for indoor positioni...

This project work presents the sensor fusion of Global Positioning System (GPS), Inertial Measurement Unit (IMU) and Odometry data from wheel encoders which is used to estimate localization of mobile robot. GPS, IMU, Wheel encoders are interfaced with MBED. Filters are used to remove erroneous noise from the data obtained from sensors. Low pass IIR filter is used for Differential Global Positio...

The Global Positioning System (GPS) is a U.S. space-based radionavigation system that provides reliable positioning, navigation, and timing services to civilian users on a continuous worldwide basis -freely available to all. GPS provides specially coded satellite signals that can be processed in a GPS receiver, enabling the receiver to compute position, velocity and time. Basically GPS works by...

The Global Positioning System, GPS technology has been widely used in positioning and attitude determination. It is well known that the accuracy, availability and reliability of the positioning results are heavily dependent on the number and geometric distribution of tracked GPS satellites. Because of this limitation, in some situations, such as in urban canyons, underground space or inside of ...