How to normalize(compensate) pulse signal?

Question

Chen Kevin 2020-4-22

0
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https://ww2.mathworks.cn/matlabcentral/answers/519808-how-to-normalize-compensate-pulse-signal

回答： Darshan Manjunathrao Chawan 2021-11-9

在 MATLAB Online 中打开

Hi all,

I want to build up algorithm to normalize my pulse signal.

What I considered ways are:

Find the max value from each 10 pulses
Use the max value to calculate the ratio with each signals which lower than the max (e.g. max=1.0, so a 0.1 signal's ratio= 1.0/0.1=10)
All of the signals will multiple to each signals speicific ratio (e.g. max=1.0, a 0.1 signal become= 0.1*10)

Ten pulses graphe

Latest max value

Here is the recent code I have right now, which can obtain the latest max value from 10 pulses

fs = 50000; % 50 kHz frequency
Ts = 1/fs*10^9; % sample rate in neno seconds
t = 1:Ts;
pulse = t<=5;
amp = [0.1, 0.3, 0.5, 0.5, 0.6, 1, 0.2, 0.8, 0.1, 0.4].';
sig = pulse.*amp;
sig = reshape(sig', [], 1);
t_total = 1:numel(sig);
max_val = zeros(size(sig)); % save maximum value at each time step;
max_val(1) = sig(1); % first maximum value is the first sample of sig
for i=2:numel(max_val)
    if sig(i) > max_val(i-1)
        max_val(i) = sig(i);
    else
        max_val(i) = max_val(i-1);
    end
end
t_total = 1:numel(sig);
figure;
plot(t_total, sig);
xlabel('Time (ns)');
ylabel('Amplitude');
figure;
plot(t_total, max_val);
xlabel('Time (ns)');
ylabel('Amplitude');