how to apply matched filter for linear frequency modulated signal which data is in matrix?

7 次查看(过去 30 天)
Divyasai Mandalapu
Divyasai Mandalapu2021-10-14
load TRACK515_1.mat;
a= (Channel_1_Data);
b= (Channel_2_Data);
c= (Channel_3_Data);
final_matrix= [a b c ];
waterfall(final_matrix(1000:3000,:)');
(** i want to apply matched filter to every channel)
  3 个评论
Mathieu NOE
Mathieu NOE 2021-10-14
ok
I may not be very famailiar with the concept of linear frequency modulated signal
and how is defined a filter that is matched (...to what ?)

请先登录,再进行评论。

回答(1 个)

Ashutosh Singh Baghel
Hi Divyasai,
I believe you wish to apply matched filtering to the signal received. Matched filtering increases the SNR of signals and improves detection performance. Here is an example to refer.
waveform = phased.LinearFMWaveform('PulseWidth',1e-4,'PRF',5e3);
x = waveform();
filter = phased.MatchedFilter( ...
'Coefficients',getMatchedFilter(waveform));
y = filter(x);
subplot(2,1,1),plot(real(x))
xlabel('Samples')
ylabel('Amplitude')
title('Input Signal')
subplot(2,1,2),plot(real(y))
xlabel('Samples')
ylabel('Amplitude')
title('Matched Filter Output')
Please refer to the following MATLAB Documentation webpag on 'Matched Filtering'.

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by