Seminar Series
Maryland Information and Network Dynamics Laboratory
Maryland Information and Network Dynamics Laboratory
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›› MIND Lab Seminar Series: 01 October 2007
Location Technology Projects at MIND Lab
Matthew Mah
Ph.D. Student in Computer Science, University of Maryland at College Park
›› Logistics
Date: Monday, 01 October 2007
Time: 2:00p to 3:00p
Location: AVW 3258
›› Abstract
The MIND Lab is working on three separate, but related wireless location technology projects. We describe the projects and current challenges associated with them.
PinPoint, as described by Neha last week, relies on hardware timestamping to measure distance between PinPoint enabled nodes. Challenges include location of non-PinPoint enabled access points and improved estimation of clock drift parameters.
Horus uses signal strengths to estimate location for a receiver unit. During the offline phase, the receiver samples signal strengths to record a vector of access point signal strengths for each point of a radio map. During the online phase, this radio map is used to estimate the most probable receiver location. Challenges include accurate prediction of radio map values without the offline measurement phase.
Nuzzer uses a system of wireless nodes measuring signal strength to detect the movement of passive, nonemitting entities. Challenges include predictive generation of a passive radio map for tracking and system layout decisions, tracking of multiple entities, and entity identification.