基于双阵元天线的ADS-B解交织投影算法
ADS-B Deinterleaving Projection Algorithm Based on Dual Antennas
苏志刚 1张玉鑫 1韩冰 1郝敬堂1
作者信息
- 1. 中国民航大学中欧航空工程师学院,天津 300300
- 折叠
摘要
随着广播式自动相关监视(Automatic Dependent Surveillance-Broadcast,ADS-B)技术的普及,交通密集区域内多条ADS-B信号的交织问题难以避免.为了降低设备成本并提高系统在低成本条件下的可用性,针对双阵元天线三条ADS-B信号交织问题,提出了双阵元天线投影算法.首先,上述方法基于频域插值理论与最小描述长度准则进行信源数估计;然后,采用功率倒置算法进行空域滤波,在未知信号波达方向的条件下抑制非期望信号,从而将双天线三信号的解交织问题转化为单天线双信号的解交织问题;最后,由虚拟多通道法扩维后,基于改进的投影算法分离交织信号.仿真验证了以上算法的有效性.
Abstract
With the popularity of Automatic Dependent Surveillance-Broadcast(ADS-B)technology,the interlea-ving problem of multiple ADS-B signals in dense traffic areas is unavoidable.In order to reduce equipment costs and improve system availability,the interleaving problem of three ADS-B signals with dual antennas was considered,and a dual-antenna projection algorithm was proposed in this paper.Firstly,the method estimated the number of sources based on frequency-domain interpolation theory and the minimum description length criterion;then,the power inver-sion algorithm was used for spatial filtering technology to suppress undesired signals under the condition of unknown signal direction of arrival,so that the deinterleaving problem of dual-antenna three-signal was transformed into the deinterleaving problem of single-antenna dual-signal;finally,the interleaved signal was separated based on the im-proved projection algorithm after dimension expansion by virtual multi-channel method.The effectiveness of the algo-rithm is verified by simulation experiments.
关键词
广播式自动相关监视/欠定盲信号分离/最小描述长度/功率倒置算法/投影算法Key words
Automatic dependent surveillance-broadcast/Underdetermined blind signal separation/Minimum de-scription length/Power inversion algorithm/Projection algorithm引用本文复制引用
基金项目
中央高校基本科研业务费中国民航大学专项(3122019183)
天津市教委科研计划项目(2022KJ059)
出版年
2024
NETL
NSTL
万方数据