基于自适应DPCA的机载雷达杂波和干扰抑制的研究  

Research into Airborne Radar Clutter and Interference Suppression Based on Adaptive DPCA

作　　者：王斌[1] 张昀[1] 黄乐天[1] 刘禹[1] 

机构地区：[1]中国船舶重工集团公司第723研究所,扬州225001

出　　处：《舰船电子对抗》2015年第3期19-22,共4页Shipboard Electronic Countermeasure

摘　　要：分析了机载雷达相位中心偏置天线(DPCA)和自适应相位中心偏置天线(ADPCA)处理算法,对机载雷达DPCA的杂波和干扰抑制等进行了数值仿真。仿真结果表明,通过DPCA可以将淹没在强杂波背景中-47dB信噪比的目标提高到6.3dB;但当存在干扰或者机载雷达不满足DPCA的理想条件时,信噪比恶化非常严重;当干扰有效辐射功率(ERP)增大到1 W时,信噪比变为-15dB;当采用ADPCA处理后,即使在干扰ERP为400 W时,处理后的信噪比仍超过6dB。This paper analyzes the processing algorithms of airborne radar displaced phase centre antenna（DPCA）and adaptive displaced phase centre antenna（ADPCA）,simulates the airborne radar DPCA clutter and interference suppression based on numerical value.The simulation results indicate：the signal noise ratio（SNR）of the target submerged in the background of strong clutter is increased from-47 dB to 6.3dB by means of DPCA,but when the interference exists or the airborne radar can＇t satisfy the ideal conditions of DPCA,the SNR deteriorates very seriously;when the interference effective radiated power（ERP）reaches to 1 W,the SNR becomes-15dB;when ADPCA processing is performed,even if the interference ERP is 400 W,the processed SNR still exceeds 6dB.

关 键 词：相位中心偏置天线 自适应相位中心偏置天线 机载雷达杂波 干扰抑制 

分 类 号：TN957.54[电子电信—信号与信息处理]