Phân tích tư tưởng của nhân dân qua đoạn thơ: Những người vợ nhớ chồng… Những cuộc đời đã hóa sông núi ta trong Đất nước của Nguyễn Khoa Điềm
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A common approach to estimating node positions is direct mea-
surement or triangulation against landmarks in the immediate one-
hop vicinity. Active Badge [24] relies on the closest infrared re-
ceiver to locate specialized beacons carried by tracked assets. RADAR [19]
relies on a centralized database of signal fingerprints from land-
marks obtained at all locations and orientations to localize a node.
Lorincz andWelsh [14] propose a similar RF fingerprint-based node
localization technique that relies on strength signatures and a dis-
tributed database. Cricket [25] relies on time difference of arrival
between radio and ultrasound signals to measure distances to ded-
icated beacons. VORBA [26] uses angle of arrival measurements
from...
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