| US 7,538,724 B1 | ||
| Method and system for relative tracking | ||
| Yohan Baillot, Reston, Va. (US) | ||
| Assigned to ITT Manufacturing Enterprises, Inc., Wilmington, Del. (US) | ||
| Filed on Jun. 15, 2007, as Appl. No. 11/763,763. | ||
| Int. Cl. G01S 1/02 (2006.01); G01S 5/14 (2006.01); G01C 21/00 (2006.01) | ||
| U.S. Cl. 342—357.08 [342/357.06; 342/357.07; 342/457; 701/213] | 32 Claims |
| 23. A system for tracking, comprising:
a first mobile unit comprising a first tracking system that is operable to produce tracking information for the first mobile
unit in a world coordinate system, the first mobile unit further comprising a second tracking system that is operable to track
an object with respect to the first mobile unit;
a second mobile unit configured to be tracked by the second tracking system at least when the second mobile unit is outside
of any structural confines of the first mobile unit, the second tracking system configured to produce tracking information
for the second mobile unit with respect to the first mobile unit; and
a coordinate combiner that receives (i) the tracking information for the first mobile unit in the world coordinate system
and (ii) the tracking information for the second mobile unit with respect to the first mobile unit, and produces tracking
information for the second mobile unit in the world coordinate system.
|