Patent ID: 7123187

Claim:
A method for determining relative yaw of a craft from a plurality of circularly polarized transmitted signals, the method comprising the steps of: A. determining, at a time t 1 , a first difference d, of carrier phase measurements associated with a first circularly polarized signal transmitted by a transmitting source and a second circularly polarized signal transmitted by the transmitting source, B. determining, at a time t 2 , a second difference d 2 of the carrier phase measurements associated with the first circularly polarized signal transmitted by the transmitting source and the second circularly polarized signal transmitted by the transmitting source, C. determining a third difference d 3 as the difference between the first and second differences, and D. determining the relative yaw from the third difference d 3 and a difference in the wavelengths of the first and second circularly polarized signals.