Title :
Cochannel Interference Suppression for Ship-Based Passive Synthetic Impulse and Aperture Radar
Author :
Ya-bin, ZHANG ; Chen Bai-xiao ; Shou-hong, Zhang ; Hai-yan, SHANG
Author_Institution :
Nat. Lab. of Radar Signal Process., Xidian Univ., Xi´´an
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
Keywords :
cochannel interference; echo; passive radar; ships; synthetic aperture radar; Karhunen-Loeve transformation; cochannel interference suppression; correlation characteristic; echo; ship-based passive SIAR; synthetic impulse-aperture radar; Array signal processing; Echo interference; Frequency; Interchannel interference; Interference suppression; Passive radar; Radar antennas; Receiving antennas; Synthetic aperture radar; Transmitting antennas; Cochannel interference suppression; Covariance matrix; Ship-based Passive SIAR;
Conference_Titel :
Radar, 2006. CIE '06. International Conference on
Conference_Location :
Shanghai
Print_ISBN :
0-7803-9582-4
Electronic_ISBN :
0-7803-9583-2
DOI :
10.1109/ICR.2006.343408
