A digital signal processing approach to data handling for ultrasound beam-forming

This report is presented on a new data handling technique for digital beam-former which utilizes ultrasound sensor array. Proposed method is a new approach to controlling and collecting of multi-channel ultrasound signals. The techniques are based on holographic beam-forming and multiplexing using switches. Multichannel RF signals are modulated by switching circuits for transmitting and multiplexing. Demultiplexing and beam-forming are performed numerically. This technique permits high speed data acquisition with simple hardware. We considered the utilization of Walsh-sequences and maximal-length binary sequences for the switching. Computer simulations and experimental results are presented to demonstrate the ability of the method.