【摘要】：針對雷達對抗中轉發(fā)式欺騙干擾的抑制問題,提出一種基于頻率分集陣列的干擾鑒別方法。頻率分集陣列中,目標回波在相鄰陣元間產(chǎn)生的相位差與距離、角度呈線性關系,而假目標不滿足該關系。對目標回波和多類假目標干擾在頻率分集陣列接收端的相位差進行理論推導,詳細分析匹配濾波、信號混合、移頻等因素對相位差的影響,并給出了假目標鑒別的具體流程。理論分析及仿真結果表明,該方法能準確提取混合信號的相位差信息,有效對抗多種類型的轉發(fā)式欺騙干擾,且鑒別性能對干信比、信噪比均不敏感,具有較強的環(huán)境適應性。
[Abstract]:Aiming at the suppression of forward spoofing jamming in radar countermeasure, a frequency diversity array based jamming discrimination method is proposed. In frequency diversity array, the phase difference and distance produced by the target echo between adjacent array elements are linear, but the false target is not satisfied with this relationship. The phase difference between target echo and multiple kinds of false target interference at the receiver end of frequency diversity array is theoretically deduced. The effects of matching filtering, signal mixing and frequency shifting on the phase difference are analyzed in detail, and the specific process of false target identification is given. The theoretical analysis and simulation results show that the proposed method can extract the phase difference information of the mixed signals accurately and effectively resist various types of forwarder spoofing interference. The discriminant performance is insensitive to the signal to signal ratio and signal-to-noise ratio and has a strong adaptability to the environment.
【作者單位】： 空軍工程大學防空反導學院;
【基金】：國家自然科學基金資助項目(61501500)
【分類號】：TN974

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