MATLAB SIGNAL PROCESSING TOOLBOX 6 Manual do Utilizador descarregar pdf (Página 19)

The pulstran Function

2-11

The pulstran Function

The pulstran function generates pulse trains from either continuous or sampled

prototype pulses. The following example generates a pulse train consisting of the sum of

multiple delayed interpolations of a Gaussian pulse. The pulse train is defined to have a

sample rate of 50kHz, a pulse train length of 10ms, and a pulse repetition rate of 1kHz;

D specifies the delay to each pulse repetition in column1 and an optional attenuation for

each repetition in column2. The pulse train is constructed by passing the name of the

gauspuls function to pulstran, along with additional parameters that specify a 10kHz

Gaussian pulse with 50% bandwidth:

T = 0:1/50E3:10E-3;

D = [0:1/1E3:10E-3;0.8.^(0:10)]';

Y = pulstran(T,D,'gauspuls',10E3,0.5);

plot(T,Y)

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 59 60

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MATLAB SIGNAL PROCESSING TOOLBOX 6 Manual do Utilizador Página 19