Patent ID: 7981036

Claim:
A method for processing Doppler signal gaps, the method comprising: receiving Doppler signals during Doppler signal acquisition to obtain data of in-phase (I) component and quadrate (Q) component signals of the Doppler signals; receiving interruption of the Doppler signals indicating that the output of the data of the I and Q component signals is interrupted in a gap period, wherein the output of the data of said I and Q component signals is continuous both before and after the gap period; for use in generating both Doppler spectrum data and Doppler acoustic data, estimating I and Q component signals corresponding to the gap period based on the I and Q component signals received both before and after the gap period; filling the interrupted I and Q component signals with the data of the estimated I and Q component signals to generate a continuous output; wall filtering the continuous output of the data of the filled I and Q component signals; generating the Doppler spectrum data based on the continuous output of the filtered I and Q component signals; and generating the Doppler acoustic data based on the same continuous output of the filtered I and Q component signals.