title: High Frame Rate Ultrasonic Imaging System Based-on Linear Frequency-Modulated Signal.
abstract: The high frame rate (HFR) ultrasonic imaging system, which is developed with limited diffraction beams, constructs images at a high frame rate. Because of one transmission for constructing image, the system suffers from lower signal-to-noise rate (SNR). The proposed method uses linear frequency-modulated signal (or chirp) as excited signal. For the higher time-bandwidth (TB) products available in the chirp, a compressed pulse response is obtained by passing the received signal through a related matched filter. The results show that the higher SNR of the system offered by chirp excitation gives improved image quality.
authors.affiliation: Department of Electronic Science and Technology, USTC, Hefei, China. Email: hanxm@mail.ustc.edu.cn.
authors.forename: Han
authors.initials: H
authors.lastname: Xuemei
authors.forename: Peng
authors.initials: P
authors.lastname: Hu
authors.forename: Du
authors.initials: D
authors.lastname: Hongwei
authors.forename: Feng
authors.initials: F
authors.lastname: Huanqing