ANALYSIS OF ADAPTIVE ARRAY ALGORITHM PERFORMANCE FOR SATELLITE INTERFERENCE CANCELLATION IN RADIO ASTRONOMY

In this paper we evaluate suitability of several array processing methods for adaptively canceling interfering signals present in radio astronomy. The issue of signal corruption by orbital satellite downlink signals, such as from GLONASS and IRIDIUM, is addressed. Simulation and real data analysis of the achievable SINR improvement and beam mainlobe distortion for five candidate algorithms is presented. Performance is evaluated as a function of angular separation between the signal of interest and the interferer, in the presence of array grating lobes.