as functional integration has increased in hand-held consumer devices features such as global positioning system (gps) receivers have been embedded in increasingly more devices in recent years. for example, the train positioning system based on gps provides an integrated positioning solution which can be used in many rail applications without a cost intensive infrastructure. the network built i...

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 ...

The Global Positioning System (GPS) is highly reliable and accurate when used outdoors. However, in indoor environments, due to the additional signal loss incurred by the walls of the buildings, the detection and decoding of GPS signals becomes a difficult task. As a solution to the indoor area coverage problem, an indoor positioning system based on GPS repeaters and a modified positioning algo...

This study investigated the impacts of playing in a natural environment on motor development in children. Methods from landscape ecology were applied for landscape analysis and entered into a Geographic Information System (GIS). Localization of play habitats was done by use of Global Positioning Systems (GPS). A quasi-experimental study was conducted on five-, six-, and seven-year old children ...

Energy efficiency and safe mobility are the two key constituents of the future automobile. The technologies that enable these features are now heavily dependent upon information and communication technology rather than traditional auto-mechanical technology. This paper presents an exploratory project 'Smart&Green Vehicle Project' at Western Michigan University which is to improve the geographic...

Recently, the Global Positioning System, GPS has been widely used in positioning. 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, the integration of GPS with the pseudolite technology has been proposed. With this pseudolite technology,...

1. Abstract Intelligence units realized that in operation areas targets avoid using their electronic devices in an area of interest. These targets increasingly employ their evasive techniques to mask their movements and locations. Detecting these regions where targets intentionally mask their movements can help find critical areas which can help the security forces to improve the success rate o...

A differential global positioning system (DGPS) is one of the most widely used augmentation systems for a low-cost L1 (1575.42 MHz) single-frequency GPS receiver. The positioning accuracy of a low-cost GPS receiver decreases because of the spatial decorrelation between the reference station (RS) of the DGPS and the users. Hence, a network real-time kinematic (RTK) solution is used to reduce the...

Seasonal variation in habitat selection by the mountain goat Oreamnos americanus is not well understood due to the difficulties of monitoring animal movement in all months of the year. The use of global positioning system (GPS) wildlife telemetry collars offers an opportunity to overcome this obstacle, however satellite acquisition problems associated with GPS wildlife telemetry collars create ...