An asset positioning method and system (700) rapidly and accurately
determine the special location of wireless nodes distributed in
three-dimensional space. Furthermore, as a by-product, every node also
determines the relative offset and drift of every other node's clock, so
that it is possible for all nodes to carry out a precise synchronized
action (708). The positioning and synchronization protocol has
significant implications for a broad range of wireless networking
infrastructure and applications. For instance, the rapid availability of
accurate location information greatly simplifies and optimises the
implementation of ad-hoc networks and sensor-based applications (716).
Additionally, the synchronized node operations facilitate the development
of new applications, such as phase-locked arrays, in which several low
power transmitters coordinate to form a powerful group transmitter. Since
the positioning protocol yields rapid responses and positional accuracy
in the range of a few centimeters, the positioning protocol permits
mobile nodes to be tracked while they are moving.