Patent ID: 7062861

Claim:
A position determination system, comprising: a first measuring module, including a first sensing device for obtaining positional data of a first testing target relative to the first sensing device; a calibration sensing device rigidly linked to the first sensing device, wherein the positional relationship between the first sensing device and the calibration sensing device is known; and a first rotation mechanism for rotating the first sensing device without altering the positional relationship between the first sensing device and the calibration sensing device; a second measuring module, including a second sensing device for obtaining positional data of a second testing target relative to the second sensing device; a calibration target for use with the calibration sensing device to obtain positional data of the calibration target relative to the calibration sensing device, wherein the calibration target is rigidly linked to the second sensing device, and the positional relationship between the second sensing device and the calibration target is known; and a second rotation mechanism for rotating the second sensing device without altering the positional relationship between the second sensing device and the calibration target; and a data processing system coupled to the first and second measuring modules and configured to provide a user interface indicating positions of the first sensing device and the second sensing device.