Multiplexed dual-chirp pulse compression method for ultrasonography

Author

Tagawa, Norio ; Moriya, Tadashi ; Iwashita, Kazuyuki ; Yoshizawa, Masasumi

Author_Institution

Tokyo Metropolitan Univ., Japan

Volume

3

fYear

2004

fDate

23-27 Aug. 2004

Firstpage

2302

Abstract

We propose the use of a dual FM chirp pulse as a transmitted signal to measure Doppler velocity in addition to reflection amplitude. Moreover, in order to measure a lower and instantaneous velocity, we propose the multiplexed dual-chirp signals method. However,. by this method, the compressed waveform is inferior to that obtained by transmitting an original dual-FM chirp pulse having no multiplexing. Therefore, in this paper, we propose an improvement method for solving this problem. The effectiveness of our proposed method is confirmed through experiments.

Keywords

Doppler measurement; acoustic signal processing; biomedical ultrasonics; chirp modulation; medical signal processing; ultrasonic reflection; velocity measurement; Doppler velocity measurement; dual FM chirp pulse; instantaneous velocity; multiplexed dual-chirp pulse compression; multiplexed dual-chirp signals; reflection amplitude; transmitted signal; ultrasonography; Chirp; Doppler measurements; Frequency measurement; Pulse compression methods; Pulse measurements; Scattering; Space vector pulse width modulation; Ultrasonic variables measurement; Ultrasonography; Velocity measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 2004 IEEE

ISSN

1051-0117

Print_ISBN

0-7803-8412-1

Type

conf

DOI

10.1109/ULTSYM.2004.1418301

Filename

1418301