Transformations providing for detection invariance with changes in the spectral parameters of lowfrequency noise
Abstract
It is proposed that preliminary transformation of signal and noise can be used to improve detection quality; the detection invariance is increased with respect to the parameters of lowfrequency noise (e.g., deep underwater noise, and terrestrial electric and magnetic fields in the ULF range). The concept of the total invariance of a transformer is introduced. It is shown that the responses of a correlometer with Laguerre orthogonal filters and a correlometer with preliminary filtering by a CLR circuit differ by invariance with respect to LF noise. The invariance of these transformers is assessed along with the output SNR.
 Publication:

Radioehlektronika
 Pub Date:
 December 1985
 Bibcode:
 1985Radel..28....3G
 Keywords:

 Noise Spectra;
 Signal Detection;
 Signal Processing;
 Transformations (Mathematics);
 Correlators;
 Electric Fields;
 Filters;
 Magnetic Fields;
 Mathematical Models;
 Signal To Noise Ratios;
 Electronics and Electrical Engineering