Measurement-Based Evaluation on Detection Probability of Extended Squitter for Air-to-Ground Surveillance
Measurement-Based Evaluation on Detection Probability of Extended Squitter for Air-to-Ground Surveillance
复制标题
空地监视扩展电波探测概率的测量评估
DOI：
10.1109/tvt.2017.2699176
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发表时间：
2017
影响因子：
6.8
通讯作者：
H. Tajima
中科院分区：
文献类型：
--
作者：
J. Naganawa;H. Miyazaki;H. Tajima
自动相关监视-广播（ADS-B）已在全球范围内开始部署，用于航空监视。在ADS-B中，飞机广播扩展信号，其中包括由全球导航卫星系统测量的飞机位置。地面站接收到这些垃圾。ADS-B具有比传统雷达实现更高精度和更高更新率的潜力，然而，它们容易受到同信道干扰。因此，在实际干扰环境中评估扩展型隔声器的性能对于ADS-B的成功部署至关重要，这也是本研究的目标。我们的方法是从日本关东空域的四个实验地面站收集和分析测量数据。测量数据是实用的，因为这些站点包括两个主要机场和一个支持空地通信的天线塔。对数据的分析产生了一个基于测量的模型，该模型可以在给定的链路裕度和干扰信号率下估计检测到扩展分频器的概率。据我们所知，这是第一个导出基于大规模测量的检测概率表达式的工作。最后给出了该模型的两种应用。首先，对扇形天线代替全向天线的性能改进进行了预测；给出了提高链路裕度和减少干扰的贡献。其次，沿实验航路预测ADS-B的覆盖范围。
Deployment of Automatic Dependent Surveillance—Broadcast (ADS-B) has commenced worldwide for aeronautical surveillance. In ADS-B, an aircraft broadcasts extended squitters, which include its position measured by the Global Navigation Satellite System. These squitters are received by ground stations. ADS-B has the potential to achieve higher accuracy and higher update rates than conventional radar, however, they are vulnerable to co-channel interference. Therefore, evaluating the performance of extended squitters in real interference environments is crucial for successful deployment of ADS-B, the goal of this work. Our approach is to gather and analyze measurement data from four experimental ground stations in the Kanto airspace, Japan. The measurement data are practical as the sites include two major airports and an antenna tower supporting air-ground communication. Analysis of the data yields a measurement-based model that can estimate the probability of detection of the extended squitter for given link-margin and interfering signal rate. To the best of the our knowledge, this is the first work to derive an expression for the probability of detection based on large-scale measurements. Two applications of the model are demonstrated. First, the improvement on performance made possible by using a sector antenna instead of an omni-directional antenna is predicted; the contributions of improved link-margin and reduced interference are given. Second, the ADS-B coverage is predicted along an experimental flight route.