Patent ID: 11857267
Assignee: MEDTRONIC NAVIGATION, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 6:
7. A method of operating a navigation system configured to navigate an instrument during a procedure, the method comprising:
generating a first signal with a controller;
sending the first signal to a transmitter system;
receiving at the controller a transmitter signal from the transmitter system based on the first signal sent to the transmitter system;
generating a second signal with the controller;
sending the second signal to a receiver system;
wherein at least one of the generated first signal or the generated second signal is a spread spectrum signal including a binary pseudo noise signal;
receiving at the controller a receiver signal from the receiver system based on the second signal sent to the receiver system;
evaluating the transmitter signal and the receiver signal to characterize the navigation system; and
generating an equalized signal based on the evaluation of the transmitter signal and the receiver signal to characterize the navigation system including calibrating and equalizing the transmitter signal and the receiver signal to the respective first signal and the second signal to account for hardware noise in the transmitter system and the receiver system;
wherein the equalized signal is operable to be used to determine a pose of a tracking device by removing distortions of the controller and the receiver and having a tracking device signal and noise from external distortion.