Details

Autor(en) / Beteiligte

• Eck, K.
• Schwann, R.
• Brenner, A.R.
• Noll, T.G.

Titel

Depth-dependent mismatched filtering using ultrasonic attenuation as a filter design parameter

Ist Teil von

• 1998 IEEE Ultrasonics Symposium. Proceedings (Cat. No. 98CH36102), 1998, Vol.2, p.1639-1644 vol.2

Ort / Verlag

IEEE

Erscheinungsjahr

1998

Quelle

IEEE Xplore Digital Library

Beschreibungen/Notizen

• We present a depth-dependent mismatched-filter pulse compression technique which uses the tissue attenuation as a parameter for appropriate compression filter design. The estimation of the attenuation solely from the reflected signal is performed using a least-squares approach in the frequency domain. Based on this estimation, a set of mismatched-filters is calculated to achieve the desired main-lobe width, SNR and sidelobe characteristics. Simulations and first experimental results are used to demonstrate the technique. The numerical effort necessary for the estimation algorithm is discussed.