电讯技术Issue(2)：156-160,5.DOI:10.3969/j.issn.1001-893x.2016.02.008
一种ADS-B报头互相关检测方法
A Novel ADS-B Preamble Detection Method Based on Cross-correlation
摘要
Abstract
The capability of Automatic Dependent Surveillance-Broadcast ( ADS-B ) preamble detection method directly determines the performance of the receiver. This paper proposes a cross-correlation method for detecting ADS-B preamble based on baseband normalized,which makes up the deficiency of pulse matc-hing method. Firstly,the baseband signal is normalized with dynamic threshold. Secondly,the normalized signal is cross-correlated with standard preamble. Finally,the presence and the arrival time of the signal is determined by cross-correlation peak detection. This method impliedly uses the pulse position,rising edge, falling edge,pulse width and no-pulse zone to detect the preamble and does not need downlink format( DF) certification compared with the conventional detection method. The simulation results show that the detection capability of this method is slightly better than that of the conventional method,but with 1 dB lower than that of the conventional method for detecting the ADS-B preamble when signal-to-noise ratio( SNR) is less than 2 dB. The performance of the ADS-B receiver is good in actual reception experiment. It can get a stable and continuous track when the plane is in sight distance,which indicates the usefulness of this method.关键词
广播式自动相关监视/S模式/互相关检测/脉冲沿检测/基带归一化Key words
ADS-B/Mode S/cross-correlation detection/pulse edge detection/baseband normalization分类
信息技术与安全科学引用本文复制引用
张涛,唐小明,宋洪良..一种ADS-B报头互相关检测方法[J].电讯技术,2016,(2):156-160,5.基金项目
国家自然科学基金资助项目(61032001)Foundation Item:The National Natural Science Foundation of China(No.61032001) （61032001）
