The signal generated by the chirp function has amplitude values that are not 1 in some parts of its time-domain diagram

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Sure
Sure 2023-12-13
回答： Paul 2023-12-13
Ran in:
N=800;
t2 = 0:1/100e6:(N-1)/100e6;
s3 = chirp(t2,0,t2(end),35e6);
plot(t2,real(s3));
The signal generated by the chirp function has amplitude values that are not 1 in some parts of its time-domain diagram, as shown in the red circle.
However, according to the chirp signal formula, its amplitude should always be 1. I can't figure out why.

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回答（1 个）

Paul
Paul 2023-12-13
Ran in:
The sampling frequency in t2 isn't high enough to catch (or get close to) all of the peaks at the higer frequencies. Here's the plot when Fs is incresed by a factor of 10.
N=800;
t2 = 0:1/100e7:(N-1)/100e6;
s3 = chirp(t2,0,t2(end),35e6);
plot(t2,real(s3));

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