Patent ID: 11879967
Assignee: BLUECATS AUSTRALIA PTY LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 3:
4. A method for locating and/or or tracking a passive object within a monitored area using a plurality of UWB transceivers, said method comprising:
in a computing device, processing channel impulse response (CIR) data from at least two receiving UWB transceivers of at least two channel pairs of UWB transceivers wherein said processing comprises:
using time delays between the times of flight of a preamble code received via direct line of sight for each of the at least two receiving UWB transceivers and the time of flight of preamble code pulses reflected from the passive object to generate a set of concentric ellipsoid surfaces aligned with the line of sight of the at least two pairs of UWB transceivers based on the total ray lengths of the reflected preamble pulses;
mapping the ellipsoid surfaces onto 3D solution space voxels; and
correlating the location and/or path of the passive object with solution space voxels having the most accumulated perturbation.