Abstract
Power distribution and correlation characteristic of cochannel interference are analyzed in Ship-based Passive Synthetic Impulse and Aperture Radar (SIAR) scenario. Characteristic of interference at interested range bin is estimated accurately using echoes from some positive and all negative frequency range bins after stretching with cosine weight. Thereafter, Karhunen-Loeve transformation is used to the echo from interested range bin and interference is suppressed provided that its power is stronger than radar echoes. Theoretical analysis and suppression procedure presented are confirmed by real data acquired in year 2005.
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