Abstract: This chapter presents the mechanisms to collect location data for Location-based services (LBS). Many LBS use the Global Positioning System (GPS) to determine the current location. GPS receivers are inexpensive, and the corresponding location output is accurate; thus, GPS is widely accepted. However, GPS has a disadvantage that it only works outdoors because the receiver must have a direct view to at least four GPS satellites. Indoor positioning systems are cost-intensive and require extensive installations. They have a small coverage and provide moderate precision. A compromise between precision and costs may be a system that uses an existing network infrastructure for positioning purposes. These issues have serious consequences for LBS. Currently, no positioning system is accessible everywhere. If a service wants to have high coverage, it has to rely on several positioning systems. Developers of LBS, currently, cannot deal with the positioning system as a black box, but rather they have to consider the specific system properties such as precision or coverage.
Publication Year: 2004
Publication Date: 2004-01-01
Language: en
Type: book-chapter
Indexed In: ['crossref']
Access and Citation
Cited By Count: 11
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