Wireless Localization - Preliminary Results

The green dot is the true tag position. At each location, the tag generates about 60-70 messages, which are received by the post nodes.

The gray dots are the post nodes. A darker color indicates an higher value of RSS. White means that no messages are received at current step.

The small red dots are the positions estimated using a single tag message. The big red dot, which is the average of such points, is the estimated position for the tag node.

Maximum Likelihood Estimation (Avg. Error 2.61 m)

Strongest RSS Neighbor (Avg. Error 1.51 m)

Posted by Gianni Giorgetti, IMPACT LAB, Arizona State University