Details

Autor(en) / Beteiligte

• Pallav, Prakash
• Gan, Tat Hean
• Hutchins, David A.

Titel

Elliptical-Tukey Chirp Signal for High-Resolution, Air-Coupled Ultrasonic Imaging

Ist Teil von

• IEEE transactions on ultrasonics, ferroelectrics, and frequency control, 2007-08, Vol.54 (8), p.1530-1540

Ort / Verlag

United States: IEEE

Erscheinungsjahr

2007

Quelle

IEEE Electronic Library Online

Beschreibungen/Notizen

• A new signal processing method, which uses a modified chirp signal for air-coupled ultrasonic imaging, is described. A combination of the elliptical and Tukey window functions has been shown to give a better performance than the Hanning windowing used in most pulse- compression algorithms for air-coupled applications. The elliptical-Tukey chirp signal provides an improvement in both the resolution of images and signal-to-noise ratios. In addition, this type of signal also reduces the level of signal voltages required to drive the source transducer while maintaining the performance of the system. This approach, thus, may have wide interest in all forms of wide bandwidth ultrasonic imaging.