IIR格型自适应陷波器在直接扩频序列系统中抗窄带干扰

Anti Narrow-band Interference in DSSS Systems Using Adaptive IIR Notch Filter

介绍了一种直接扩频系统中抗窄带干扰的自适应IIR陷波滤波算法。通过谱线增强器估计干扰的瞬时频率和功率,采用一种IIR自适应格型陷波滤波技术,调整陷波器的深度和宽度,提高了输出信号信噪比。

An anti-jamming algorithm for narrow-band interference in direct sequence spread spectrum systems , which is based on the adaptive ⅡR notch filtering is introduced.An adaptive line enhancer （ALE） is used to estimate the instantaneous frequency and power of interference, the depth of the notch is adjusted by using the adaptive lattice ⅡR notch filter , so as to improve the SNR of output signal.