How to Create a Multiple Pulse Signal

Hi, so I'm working on a project for a Radar Imaging course. I could use some help with creating the initial signal that will later be used to determine doppler shift.

I need to take a single pulse signal x and then create a pulse train from it. The number of pulses in the train is controlled by m.

Here's what I have so far:

%========creating signal===========
y=B/ps;  %bandwidth divided by pulse width
thetat=-2*pi*(0.5*B)*ts+pi*B*ts.^2/ps;
x=cos(thetat);
x=x.*envelope;

which creates a signal that looks like standardsignal.jpg

then:

%========create pulse train============
m=5;              %number of pulses
M=[0:1:m-1];      %currently unused
Tr=1*10^-6;       %1us delay between each pulse
Trs=zeros(1,Tr*Fs); %converts time to the relevant number of 0 valued samples

for c=0:m-1
multisignal=[x Trs]; %adds the zeros array to the existing
end

I realized after running it that the for loop will only add the zeros array to the signal once and I'm not sure how to make it recursive as to implement: x+zeros+x+zeros+ [...]

Any help would be greatly appreciated!

Answer 1

[Renato SL]

I think you can do something like this for the loop part

multisignal = []; %initialize an empty array to contain the final multisignal
for c=0:m-1
    multisignal=[multisignal x Trs]; %adds the x-signal & zeros array to the existing multisignal (from previous step) to create the pulse train
end

[Sage Hayes]

Yes, Yes! That works, didn't know you could through in more than two terms to that, thank you so much!