李建儒,高岩,张佳新,等. 基于SRTM3的岸基ADS-B接收站覆盖性能比较分析[J]. 电波科学学报,2023,38(5):870-876. DOI: 10.12265/j.cjors.2022233
      引用本文: 李建儒,高岩,张佳新,等. 基于SRTM3的岸基ADS-B接收站覆盖性能比较分析[J]. 电波科学学报,2023,38(5):870-876. DOI: 10.12265/j.cjors.2022233
      LI J R, GAO Y, ZHANG J X, et al. Comparative analysis of coverage performance of shore-based ADS-B receiving stations based on SRTM3[J]. Chinese journal of radio science,2023,38(5):870-876. (in Chinese). DOI: 10.12265/j.cjors.2022233
      Citation: LI J R, GAO Y, ZHANG J X, et al. Comparative analysis of coverage performance of shore-based ADS-B receiving stations based on SRTM3[J]. Chinese journal of radio science,2023,38(5):870-876. (in Chinese). DOI: 10.12265/j.cjors.2022233

      基于SRTM3的岸基ADS-B接收站覆盖性能比较分析

      Comparative analysis of coverage performance of shore-based ADS-B receiving stations based on SRTM3

      • 摘要: 广播式自动相关监视(automatic dependent surveillance-broadcast, ADS-B)技术在民航领域获得广泛应用,ADS-B信号遵循相关民航标准,可作为已知相关信息的空中辐射源. 为了研究岸基ADS-B接收站在电波传播领域的应用,提出了一种基于航天飞机雷达地形测绘任务3″×3″精度(shuttle radar topography mission 3 second, SRTM3)数据的岸基ADS-B接收站覆盖性能预测方法. 基于高精度的SRTM3地理高程数据,考虑不规则地形的影响,通过计算不同方位上的遮蔽角,进行ADS-B接收站的遮蔽角以及标准大气环境下的理论预测覆盖性能分析,理论与实测结果的一致性表明算法有效. 基于2021-06-18—2022-05-31约1年实测ADS-B数据,给出了各月份理论与实测覆盖性能比较,结果表明:在存在飞机进入和穿出理论覆盖范围的方位上,11月份、12月份、1月份预测误差较小,平均误差小于22 km;其他月份则误差较大,平均误差可达200 km. 这些结果可为ADS-B信号的覆盖算法性能提升提供参考.

         

        Abstract: Automatic dependent surveillance-broadcast (ADS-B) technology is widely used in the field of civil aviation. ADS-B signals follow relevant civil aviation standards and serve as airborne radiation sources for known relevant information. In order to study the radio wave propagation at shore-based ADS-B receiving stations This paper proposes a coverage performance method for shore-based ADS-B receiving stations based on Shuttle Radar Topography Mission 3 second (SRTM3). A shore-based ADS-B signal receiving station was set up to receive ADS-B signals at land and sea areas. Based on the high-precision SRTM3 geographic elevation data, and considering the influence of irregular terrain, by calculating the shielding angle in different azimuths, the shielding angle of the ADS-B receiving station and the theoretical prediction coverage performance in the standard atmospheric environment are analyzed. The calculation results show that the agreement between the theory and the actual measurement indicates that the algorithm is effective. Furthermore, based on the ADS-B monitoring data measured throughout the year from June 2021 to May 2022, a comparison of theoretical and measured coverage performance in each month was given. The prediction errors in November, December and January are relatively small, with an average error of less than 22 km; in other months, the errors are larger, with an average error of up to 200 km. These results can provide a reference for the performance improvement of the coverage algorithm of ADS-B signals.

         

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