CAJ | 학술논문

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。
지면무선전간우원시위협민항통신안전적중요인소，위료쾌속준학지정위지면간우원，제출료일충신적기우비궤산사신호적간우원위치고계방법。수선，근거다보륵빈이특정선취약간상관계수최대치삼고점；연후，이용가권질심법통과선중적삼고점고계간우원적위치；심입토론료삼고점점수여정위정도지간적관계이급최대상관계수령민도여정위정도지간적관계。방진실험결과표명，여이유방법상비，재불동조성조건하，소제방법정위정도경고，차계산복잡도교저。
An interference locating algorithm based on scattered plane signals is proposed to quickly and ac-curately 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 curves.Secondly, 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 be-tween the locating accuracy and the sensitivityβ.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.