针对强干扰下信号被淹没、很难检测到有用信息的问题，研究干扰检测和抑制技术，提高抗干扰能力。建立了受窄带干扰影响的跳频接收机模型，在接收信号为盲的情况下，分析了基于非抽取小波包变换的干扰检测和抑制算法。在非抽取小波包变换的干扰抑制基础上，提出了基于AR 模型线性预测的窄带干扰抑制算法，并对接收信号进行盲解跳和解调。仿真验证了所提方法的有效性。%When signal is submerged in the strong interference, it is difficult to detect useful information. Thus the interference detection and interference suppression technologies are studied in order to improve anti⁃interference capability.This paper constructs the frequency⁃hopping receiver model affected by narrowband interference, and analyzes the interference detection and suppression algo⁃rithms based on un⁃decimated wavelet packet transform in case that the received signal is blind.Based on the interference suppression of un⁃decimated wavelet packet,this paper proposes an algorithm of narrowband interference suppression in view of AR linear prediction model,and implements blind de⁃hopping and blind demodulation.The simulation verifies the effectiveness of the proposed algorithm.
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