Abstract The Global Positioning System (GPS) has been with us now for over a decade, providing positioning information across a broad range of . applications. In the geographical information systems area the potential of GPS technology is really only just starting to be realized The major areas of use have been for mapping the locations of features particularly for asset management This papa de...

the error of inertial navigation systems increase versus time, therefore for achieving higher accuracy specially in long time navigations we have to use an aiding system. global positioning system is the best aiding system in this case. in this paper we first simulate a gps and ins; then simulate tightly integration and finally review adaptation method of kalman filtering a fuzzy adaptive kalma...

Currently, mobile phones are the primary method of navigation. However, indoor positioning and navigation poses a unique problem because the Global Positioning System (GPS) satellites normally used to navigate oudoors have limited use indoors. One solution is using Wifi access points as anchors, measuring the signal strength and calulating position using trilateration. Indeed, there are tools t...

For the various applications in home automation, the service system requires to precisely estimate user’s locations by certain sensors. It is considered as a challenge to automatically serve a mobile user in the house. However, indoor localization cannot be carried out effectively by the well-know Global Positioning System (GPS). In recent years, Wireless Sensor Networks (WSNs) are thus popular...

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...

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...

The Global Positioning system (GPS) is used for navigation and associated tasks in wide variety of applications. One of the primary modes of GPS operation is differential GPS. Differential GPS allows more accurate positioning than stand-alone GPS. Many new applications are possible because of the increased accuracy obtained through differential GPS. In this paper the techniques and methods of d...

When the profile information of an existing road is missing or not up-to-date and the parameters of the vertical alignment are needed for engineering analysis, the engineer has to recreate the geometric design features of the road alignment using collected profile data. The profile data may be collected using traditional surveying methods, global positioning systems, or digital imagery. This pa...

Traffic exposure assessments could misclassify the extent and locations of exposure if traditional recall surveys and self-reported travel diaries do not record all participant activities. The Harbor Communities Time Location Study (HCTLS) examines the nature, extent and implications of underreported locations/ trips in a case study which used portable Global Positioning Systems (GPS) devices t...

Internet of Things, also known as the sensor network, refers to the combination of the network formed by a variety of sensing devices, such as radio frequency identification devices, infrared sensors, global positioning systems, laser scanners and other devices with Internet. ZigBee technology is an emerging short-range, low-rate wireless network technology; it is a cross between technology and...