【摘要】 广播式自动相关监视(ADS-B)是一种新型的航空器监视技术，具有定位精度高、更新速度快及覆盖范围广等优势，在民用航空监视领域获得广泛应用。由于ADS-B消息以广播方式传输，未采用加密与认证机制，ADS-B系统易受外部欺骗源的干扰。为解决该问题，提出了一种基于到达时间间隔差(IDOA)的ADS-B位置消息验证方法。建立基于IDOA的ADS-B位置消息验证系统模型，理论分析给出检验统计量的表达式及其统计特性，进一步分析给出检测门限的确定方法，通过仿真验证所提方法的正确性与有效性。结果表明：所提方法与基于到达时间差(TDOA)的验证方法具有相同的检测性能，且对时间测量误差和ADS-B位置误差不敏感，但所提方法可克服基于TDOA的验证方法存在的对地面站时间同步误差敏感的缺点。更多还原

【Abstract】 Because of its precise aircraft position, quick update interval, and broad surveillance coverage,automatic dependent surveillance-broadcast(ADS-B) is a rapidly developing aeronautical surveillance system that has been extensively utilized in civil aviation surveillance. Nevertheless, since ADS-B communications are transmitted without cryptographic security protections, ADS-B is susceptible to spoofing sources. To detect spoofing, a verification scheme of ADS-B position messagesbased on interval difference of arrival(IDOA) is proposed. Firstly,the system model of ADS-B position message verification based on IDOA is presented.Then, the expression of the test statistic for ADS-B position message verification is derived. In addition, the detection threshold is given by the derived statistical property of the test statistic. Finally, computer simulation is used to confirm the accuracy and efficacy of the suggested strategy.The simulation results show that the probability of detection and probability of false of the IDOA scheme is equivalent to that of the time difference of arrival(TDOA) scheme,and IDOA is not sensitive to time measurement error and ADS-B position error. However, the benefit of IDOA is that it is not affected by time synchronization errors.更多还原