Restoring signal

  • Thread starter poklad
  • Start date
  • #1
1
0
Hi All!

I has probe (B-field induction probe) with non linear amplitude-frequency characteristic. I has calibration table with 3 columns: frequency, amplitude, phase. I has output signal U(t) recorded with sample frequency Fs during rather long time.
Can I restore input signal (i.e. B-field amplitude B(t))?
I try to use (in Matlab) the next algorithm: FFT conversion -> apply calibration -> reverse FFT conversion.
But I obtain jump at splicing.

It seems I must create filter from my calibration table and filtered my signal. But how?

Jury
 

Answers and Replies

  • #2
298
8
Hi All!

I has probe (B-field induction probe) with non linear amplitude-frequency characteristic. I has calibration table with 3 columns: frequency, amplitude, phase. I has output signal U(t) recorded with sample frequency Fs during rather long time.
Can I restore input signal (i.e. B-field amplitude B(t))?
I try to use (in Matlab) the next algorithm: FFT conversion -> apply calibration -> reverse FFT conversion.
But I obtain jump at splicing.

It seems I must create filter from my calibration table and filtered my signal. But how?

Jury
Sounds like a (lack of) windowing (filter) problem.

http://www.mathworks.com/help/toolbox/signal/window.html [Broken]
 
Last edited by a moderator:

Related Threads on Restoring signal

Replies
3
Views
23K
Replies
14
Views
2K
Replies
1
Views
4K
Replies
4
Views
9K
  • Last Post
Replies
10
Views
2K
  • Last Post
Replies
3
Views
2K
  • Last Post
Replies
7
Views
2K
  • Last Post
Replies
5
Views
2K
  • Last Post
Replies
6
Views
3K
Top