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pulsint

Pulse integration

Syntax

Y = pulsint(X)
Y = pulsint(X,METHOD)

Description

Y = pulsint(X) performs video (noncoherent) integration of the pulses in X and returns the integrated output in Y. Each column of X is one pulse.

Y = pulsint(X,METHOD) performs pulse integration using the specified method. METHOD is 'coherent' or 'noncoherent'.

Input Arguments

X

Pulse input data. Each column of X is one pulse.

METHOD

Pulse integration method. METHOD is the method used to integrate the pulses in the columns of X. Valid values of METHOD are 'coherent' and 'noncoherent'. The values are not case sensitive.

Default: 'noncoherent'

Output Arguments

Y

Integrated pulse. Y is an N-by-1 column vector where N is the number of rows in the input X.

Examples

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Noncoherently integrate 10 pulses of a sinusoid with added gaussian white noise.

npulse = 10;
x = repmat(sin(2*pi*(0:99)'/100),1,npulse) + 0.1*randn(100,npulse);
y = pulsint(x);

Plot a single pulse and then the integrated pulses.

subplot(2,1,1)
plot(abs(x(:,1)))
ylabel('Magnitude')
title('First Pulse')
subplot(2,1,2)
plot(abs(y))
ylabel('Magnitude')
title('Integrated Pulse')

Figure contains 2 axes. Axes 1 with title First Pulse contains an object of type line. Axes 2 with title Integrated Pulse contains an object of type line.

More About

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Coherent Integration

Let Xij denote the (i,j)-th entry of an M-by-N matrix of pulses X.

The coherent integration of the pulses in X is:

Yi=j=1NXij

Noncoherent (video) Integration

Let Xij denote the (i,j)-th entry of an M-by-N matrix of pulses X.

The noncoherent (video) integration of the pulses in X is:

Yi=j=1N|Xij|2

References

[1] Richards, M. A. Fundamentals of Radar Signal Processing. New York: McGraw-Hill, 2005.

Extended Capabilities

Introduced in R2011a