Patent ID: 11874386
Assignee: COBHAM ADVANCED ELECTRONIC SOLUTIONS, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 7:
8. The method of claim 1, wherein the plurality of RF antennas include a third RF antenna and a fourth RF antenna, the method further comprising:
outputting by the third RF antenna a third antenna signal;
converting the third antenna signal to a third optical signal;
passing the third signal through a third optical channel to introduce a third delay;
converting the third optical signal to a third RF signal;
outputting by the fourth RF antenna a fourth antenna signal;
converting the fourth antenna signal to a fourth optical signal;
passing the fourth signal through a fourth optical channel to introduce a fourth delay;
converting the fourth optical signal to a fourth RF signal;
determining the amplitude ratio and the phase difference between the third RF signal and the fourth RF signal, wherein the polarization angle of the input RF signal is determined based on the amplitude ratio and the phase difference between the first RF signal and the second RF signal and the amplitude ratio and the phase difference between the third RF signal and the fourth RF signal, wherein the amplitude ratio and phase difference are temporally aligned.