Title :
Analogue kurtosis detector for radio-frequency interference in microwave radiometers
Author :
Mohammed, P.N. ; Knuble, J.J. ; Piepmeier, J.R.
Author_Institution :
Microwave Instrum. & Technol. Branch, NASA ´´s Goddard Space Flight Center, Greenbelt, MD
Abstract :
An analogue system has been developed for radio frequency interference (RFI) detection in microwave radiometers. The detector measures the higher order moments of the signal and the kurtosis measurement is used to determine the presence of RFL The hardware comprises a square-law detector and a high-speed analogue multiplier. Because the circuit uses only analogue components at radio and/or intermediate frequencies, it can easily augment conventional radiometer architectures used in both airborne and spaceborne instruments.
Keywords :
analogue circuits; analogue multipliers; radiofrequency interference; radiometry; analogue kurtosis detector; analogue system; high-speed analogue multiplier; kurtosis measurement; microwave radiometer; radio-frequency interference; square-law detector;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20080113
