递归最小二乘恒模算法在民航地空通信干扰提取中的应用

Application of recursive least squares constant modulus algorithm in the civil aviation air-ground communications interference extract

民航甚高频通信经常受到各种各样的干扰,严重影响了民航飞行的正常进行。文章首先建立了符合甚高频通信特点的实际模型,然后建立了双通道干扰抑制系统,并在满足窄带假设地前提下提出了一种基于递归最小二乘恒模阵列的的抗干扰方案,这种阵列比以往使用最陡下降恒模阵列具有更快的收敛速度和数值稳定性。计算机仿真数据实验和实际采集的数据实验也证明了这种方法的有效性。

Civil Aviation VHF communication is often subject to a variety of interference,which has seriously affected the normal civil aviation.The actual model accord with VHF communication characteristics was firstly established,and then a dual-channel interference suppression system was created,under the premise to meet the narrowband assumption,anti-jamming scheme based on recursive least squares constant modulus array was provided.This array has faster convergence speed and numerical stability than the steepest descent constant modulus array ever used.The computer simulation data experiments and the actual data collection experiments also proved the effectiveness of this approach.