TGC Time-gain compensation
TGC time-gain compensates RF or I/Q signals.
Contents
Syntax
TGC(RF) or TGC(IQ) performs a time-gain compensation of the RF or I/Q signals using a decreasing exponential law. Each column of the RF or I/Q array must correspond to a single signal over (fast-) time.
[~,C] = TGC(RF) or [~,C] = TGC(IQ) also returns the coefficients used for time-gain compensation (i.e. new_SIGNAL = C.*old_SIGNAL)
Approach
The signal intensity is assumed to decrease exponentially as distance increases (and thus as fast-time increases). A robust linear fitting is performed on the intensity logarithm to seek the TGC exponential law.
See also
About the author
Damien Garcia, Eng., Ph.D. INSERM researcher Creatis, University of Lyon, France
websites: BioméCardio, MUST
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