Patent ID: 6760386
Filing Date: 2004-07-06
Classification: H04B

Abstract:
A method for combining a first signal from a first sensor with a second signal from a second sensor to produce a combined signal, the method comprising:determining a phase difference between the first signal and the second signal, wherein determining the phase difference comprises: multiplying the first signal by the complex conjugate of the second signal to produce an intermediate result; filtering the intermediate result to produce a filtered intermediate result; using the filtered intermediate result to obtain the chase difference; determining a first weighting value, wherein the first weighting value is independent of the phase difference; determining a second weighting value, wherein the second weighting value is independent of the phase difference; applying a first weighting value to the first signal to produce a first weighted signal; applying a second weighting value to the second signal to produce a second weighted signal; and using the phase difference when combining the first weighted signal and the second weighted signal.