基于飞机散射信号的干扰源定位算法

地面无线电干扰源是威胁民航通信安全的重要因素,为了快速准确地定位地面干扰源,提出了一种新的基于飞机散射信号的干扰源位置估计方法。首先,根据多普勒频移特征选取若干相关系数最大值参考点;然后,利用加权质心法通过选中的参考点估计干扰源的位置;深入讨论了参考点点数与定位精度之间的关系以及最大相关系数灵敏度与定位精度之间的关系。仿真实验结果表明,与已有方法相比,在不同噪声条件下,所提方法定位精度更高,且计算复杂度较低。

Interference locating algorithm based on scattered plane signals

An interference locating algorithm based on scattered plane signals is proposed to quickly and accurately locate the radio interference which is the main threat to civil aviation communication. Firstly, several reference points are chosen utilizing maximum correlation coefficients of Doppler frequency shift curvesSecondly,interference locations are estimated using weighted centroid with the reference points. Discussions are made on the relationship between the locating accuracy and the number of points chosen,as well as the relationship between the locating accuracy and the sensitivity β. Further comparison between the proposed algorithm and the former ones is also made. It is proved through simulations and experiments that the proposed algorithm leads to better accuracy with less computation.