January 3, 2010 Advanced Technoligies: Matched filtering
- 2023-03-03
- 623
- Sonostar Technologies Co., Limited
January 3, 2010
Matched filtering
Matched filtering is an important signal processing function. The
transducer sends out unique transmit sequences, each of which can be
recognized by a matched filter. The key advantage is that the transmit
sequence can be expanded in time at a lower amplitude and transmitted
at a lower peak pressure amplitude level. This can reduce bioeffects
and contrast agent effects. It can also preserve axial resolution with
depth, and increased sensitivity and tissue penetration depth.
A variety of Matched filtering have been implemented. There are two
classical types of transmit waveforms, a coded binary sequence and a
chirped pulse, which are borrowed from radar.