中国安全科学学报 ›› 2020, Vol. 30 ›› Issue (12): 106-112.doi: 10.16265/j.cnki.issn 1003-3033.2020.12.015

• 公共安全 • 上一篇    下一篇

基于逻辑回归的总系统误差分类和预测方法

焦卫东 教授, 王维   

  1. 中国民航大学 天津市智能信号与图像处理重点实验室,天津 300300
  • 收稿日期:2020-09-20 修回日期:2020-11-15 出版日期:2020-12-28 发布日期:2021-07-15
  • 作者简介:焦卫东 (1973—),男,陕西咸阳人,博士,教授,主要从事飞行程序设计、图像/视频处理与编码、三维虚拟仿真验证等方面的研究。E-mail: nxjiaowd@sina.com。
  • 基金资助:
    国家自然科学基金资助(U1533115)。

Total system error classification and prediction based on logistic regression

JIAO Weidong, WANG Wei   

  1. Tianjin Key Lab for Advanced Signal Processing, Civil Aviation University of China, Tianjin 300300, China
  • Received:2020-09-20 Revised:2020-11-15 Online:2020-12-28 Published:2021-07-15

摘要: 为保证飞行总系统误差(TSE)超出安全容限时机载告警系统能及时发出正确告警,提出以影响TSE的因素为逻辑回归法(LRM)的样本特征,利用LRM进行TSE分类和预测的方法,快速将TSE预判为超限和不超限;选取对TSE影响比较稳定的影响因素,如导航系统误差(NSE)、位置精度因子(PDOP)值及卫星可见数目等为样本特征,开展试验;分析不同种类和数量的样本特征及组合下LRM对TSE分类和预测准确性的影响,并与传统基于坐标计算的TSE预测方法的准确率和计算负荷作比较。结果表明:以NSE、PDOP值和卫星可见数为组合,LRM对TSE的预测准确率最高,计算负荷相对较小,且均优于基于坐标计算的TSE预测方法。

关键词: 逻辑回归法(LRM), 总系统误差(TSE), 导航系统误差(NSE), 位置精度因子(PDOP), 卫星可见数

Abstract: In order to ensure that airborne warning system can send out correct alarm in time when TSE of flights is beyond safety limit, a LRM-based method to classify and predict TSE as in limit or over limit was proposed with influencing factors of TSE as sample characteristics of LRM. Experiments were conducted with stable factors, such as NSE, PDOP value and visible number of satellites selected as sample characteristics. Then, influence of LRM on classification and prediction accuracy of TSE was analyzed under conditions of different types and quantities of sample characteristics and combinations, and prediction accuracy and computational load were compared with that of traditional TSE estimation methods based on coordinate calculation. The results show that in the event of a combination of NSE, PDOP value and satellite visible number, LRM has highest prediction accuracy for TSE, and its calculation load is relatively small, which is better than that of TSE prediction methods based on coordinate calculation.

Key words: logistic regression method (LRM), total system error (TSE), navigation system error (NSE), position dilution of precision (PDOP), visible satellites number

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