| Issue |
A&A
Volume 368, Number 1, March II 2001
|
|
|---|---|---|
| Page(s) | 369 - 376 | |
| Section | Section $secnum inconnue | |
| DOI | https://doi.org/10.1051/0004-6361:20000552 | |
| Published online | 15 March 2001 | |
RFI excision using a higher order statistics analysis of the power spectrum
ASTRON, Postbus 2, 7990AA Dwingeloo, The Netherlands e-mail: fridman@nfra.nl
P. Fridman
Received:
7
September
2000
Accepted:
8
December
2000
A method of radio frequency interference (RFI) suppression in radio astronomy spectral observations based on the analysis of the probability distribution of an instantaneous spectrum is described. This method allows the separation of the Gaussian component due to the natural radio source and the non-Gaussian RFI signal. Examples are presented in the form of computer simulations of this method of RFI suppression and of WSRT observations with this method applied. The application of real time digital signal processing for RFI suppression is found to be effective for radio astronomy telescopes operating in a worsening spectral environment.
Key words: power spectrum / probability distribution / RFI excision
© ESO, 2001
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