A novel technique for high resolution ultrasound imaging super resolution FM-Chirp correlation Method (SCM)

This study addresses the issue of super-resolution pulse compression technique (PCT) used for ultrasound imaging. Time resolution of multiple ultrasonic echoes using the FM-Chirp PCT is limited by the bandwidth of the sweep-frequency: the resolution depends on the sharpness of the auto-correlation function. Herein, we propose the Super resolution FM-Chirp correlation Method (SCM) and evaluate its performance. This method is based on the multiple signal classification (MUSIC) algorithm. Our simulations were made for the model assuming multiple signals reflected from some scatterers. We confirmed that SCM detects the time delay of complicated reflected signals with high resolution.