CPC G01S 5/0273 (2013.01) | 20 Claims |
1. A method of determining a location of a user within an indoor space, comprising:
emitting a radiofrequency signal into the indoor space;
receiving backscattered training radiofrequency signals, including multipath, for at least one location within the indoor space;
converting the received training signals into a point cloud for each location of the at least one location;
assigning a signature for each location based on the point cloud for each location;
receiving additional radiofrequency signals, including multipath;
converting the additional radiofrequency signals into an additional point cloud; and
determining a location of the user by comparing the additional point cloud to the assigned signatures.
|