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Location-Based Services Handbook by Mohammad Ilyas, Syed A. Ahson

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Chapter 1

Positioning Technologies in Location-Based Services

Eladio Martin, Ling Liu, Michael Covington, Peter Pesti, and Matthew Weber

1.1 Introduction

Mobile devices today boast processing power and memory on par with that found in desktop computers. Wireless connectivity has become much more readily available. Many metropolitan areas feature large-scale wireless networks and cellular or satellite connections are accessible in many remote areas. Furthermore, we are seeing a continuing decrease in the cost of hardware—the mobile devices themselves, as well as accessories, such as global positioning system (GPS) units. What was once a cost-prohibitive, underpowered, immature technology is now a reality.

With the continued decrease in the prices ...

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