Indoor Location Based Services (European Journal of Navigation,
2004)
A
multitude of applications and services would benefit from indoor (in-building) positioning and navigation. More-precise positioning
technologies could enable navigation to specific items within a store's aisle. Users should be able to identify features
of their surroundings by pointing at them, so special sensors have to be integrated into mobile devices that determine direction.
Download here (log-in required -- join the mailing list for
login info.)
In-Building Positioning: Modeling
Location for Indoor World (Geographic Information Management / GIM 2004)
Mobile devices are becoming ubiquitous in our daily life, giving users a
huge sense of mobility. Accompanying this growth, mobile and mobile-aware software are more sophisticated, taking advantage
of the knowledge of their and other object’s physical location. Moreover, different sensor technologies can be used
to position users and devices. Indoor world’s several constraints should be addressed given the issues related to these
spaces. Thus, a question is raised: “What’s different in the indoor world?” Both GPS and cellular network
(i.e., GSM) based positioning are not appropriate for indoor use, due to lost of line of sight for GPS and signal blockage
(i.e., by walls), fading and shadowing for GSM. Nonetheless, GSM can be used as a low accuracy system, mainly using cell-ID.
In addition, the indoor world can provide a more controlled environment and several positioning methods can be used, alone
or combined... Download here (log-in required -- join the mailing list for login info.)
