can anyone suggest me code for generating radar signal using barker code sequences.

used phasecodedwaveform function and generated barker code sequence in pulse format but i want it to be in sinusoidal.

[Walter Roberson]

Something like taking the fft() of the pulses ?

A pulse train is the summation of a large number of sinusoidals.

Answer 1

[Bjorn Gustavsson]

Multiply your pulse-code with the carrier-wave (your uncoded sinusoidal) - and preferably the filter characteristics of your transmitter system? Obviously you'll have to take proper care to expand the pulses in your Barker-code properly to match the time-vector for which you calculate the sinusoidal.

HTH

Answer 2

[Honglei Chen]

You can use phased.PhaseCodedWaveform if you have access to Phased Array System Toolbox.

http://www.mathworks.com/help/phased/ref/phased.phasecodedwaveform-class.html

Here is the code that will generate a length-4 barker code and then display its ambiguity function plot along zero Doppler

myWav = phased.PhaseCodedWaveform('Code','Barker')
x = step(myWav);
ambgfun(x,myWav.SampleRate,myWav.PRF,'Cut','Doppler')

HTH