基于电磁波散射方向性的ADS-B信号解交织  

De-interleaving of ADS-B Signals Based on Scattering Directivity of Electromagnetic Wave

作　　者：朱栋 冯成涛 储开斌[1] 宦娟[1] ZHU Dong;FENG Cheng-tao;CHU Kai-bin;HUAN Juan(College of Information Science and Engineering,Changzhou University,Changzhou Jiangsu 213164,China)

机构地区：[1]常州大学信息科学与工程学院,江苏常州213164

出　　处：《计算机仿真》2021年第11期58-61,66,共5页Computer Simulation

基　　金：江苏省自然科学基金(BK20170157)。

摘　　要：作为实现广播式自动相关监视的主要技术之一,1090ES信号在目标监视领域得到广泛应用。但随着民航飞行量的增加,它与二次雷达应答信号的同频交织问题日益严重。为了降低ADS-B地面站对1090ES信号误码和漏检概率,提出了利用电磁波散射的方向性,从空间域上实现交织信号分离的技术。利用有限元差分时域法,对双介质圆形散射体进行散射电磁场仿真,由散射场的方向分布可得,两个入射角相近的电磁波信号经过散射以后其行进方向发生较大变化,从而实现交织信号空间上的分离。As one of the main technologies which can realize Automatic Dependent Surveillance Broadcasting(ADS-B), 1090 ES signals have been widely used in the field of monitoring targets. With the growth of civil aviation flights, however, the problem of co-channel overlapping with the reply signals of secondary surveillance radar(SSR) is becoming increasingly serious. In order to decrease the probabilities of wrongly decoding and missing inspection, scattering directionality of electromagnetic wave was utilized to separate the interleaving signals from spatial domain. Using Finite Difference Time Domain(FDTD) method, scattered electromagnetic fields were simulated for two circular dielectric scatterers. From the directional distribution of the scattered fields, it is indicated that two incident electromagnetic waves with close incident angles are changed in their propagation direction after scattering, which leads to separating the overlapped signals in the spatial domain.

关 键 词：1090扩展电文 解交织 有限元差分时域仿真 电磁场散射 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]