Introduction to Geospatial Information and Communication by Rifaat Abdalla

By Rifaat Abdalla

This e-book is designed to assist scholars and researchers comprehend the newest learn and improvement traits within the area of geospatial info and verbal exchange (GeoICT) applied sciences. as a result, it covers the basics of geospatial details platforms, spatial positioning applied sciences, and networking and cellular communications, with a spotlight on OGC and OGC criteria, net GIS, and location-based companies. specific emphasis is put on introducing GeoICT as an built-in know-how that successfully bridges a number of information-technology domains.

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Signal levels vary significantly due to multipath traveling (reflections of objects such as buildings), interference with other signals, and passage through walls, foliage, or glass-and-metal vehicles. This phenomenon can be corroborated by any cellular user who has seen the signal-strength bars on a mobile phone display fluctuate, even when the phone is not moving. Signal levels are also affected by seasonal variations in weather and changes in foliage. All of these effects result in random variations in signal strength that can not be predicted.

Applications of NBPS There are many applications for network-based positioning technology including enhanced 911 services, traffic information and monitoring, enhanced 411 directory/information, and in-vehicle navigational assistance and roadside assistance. It is effective in location-based billing and fleet tracking as well as in field-based wireless mapping applications of telegeoinformatics and LBS. Radio-Based Positioning System (RBPS) RBPS technology uses radiofrequency (RF) to determine position.

9), along with health care, may also be leading markets that could take advantage of methods using RF hardware along with the application to handle resources along with inventory. RTLS Versus GPS RTLS and GPS both provide location information. GPS, in general, communicates with the receiver through a signal, and it helps with performing different types of measures that define the location of each component of the system. RTLS merely Fig. 9 Example of RTLS 40 2 Spatial-Positioning Technology deals with the location of the tracked item and notifies the user of the location.

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