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Jumat, 13 November 2009

LBS positioning technologies & TDOA

[notes]
LBS positioning technologies:
cell of origin (nearest cell)
distance (lateration)
angle (angulation)
location patterning (pattern recognition)
 RF fingerprinting – calibrating RF model to the particular environment
location precision – repeatability/confidence level of successful detection 10m~90% of the time
inter-access point recommended separation 50-70ft

TDOA formula: D=C(t)



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