前视地形告警算法与告警模式仿真验证研究  

Research on Simulation Verification of Forward Looking Terrain Warning Algorithm and Warning Mode

作　　者：孙锴 庞华群 闵彤 何建华[2] SUN Kai;PANG Hua-qun;MIN Tong;HE Jian-hua(Taiyuan Aviation Instrument Co.,Ltd.,Taiyuan 030000,China;Northwestern Polytechnical University,Xi′an 710000,China)

机构地区：[1]太原航空仪表有限公司,山西太原030000 [2]西北工业大学,陕西西安710000

出　　处：《航空计算技术》2023年第2期11-15,共5页Aeronautical Computing Technique

摘　　要：前视地形告警功能是近地告警系统中极为重要的一部分,但已有的前视地形告警方法都是通过拟合包线进行告警,这种方式的精确性略有不足。为了提高前视地形告警的准确性,提出了一种简单前视地形告警算法,并搭建了仿真验证平台进行仿真验证。提出了简单前视地形告警算法的工作流程;建立了航迹预测算法、极限拉起点和提前告警时间的计算模型;定义了前视地形告警新的告警子模式;利用Qt设计了一个仿真验证系统。通过仿真验证可知,前视地形告警算法能够及时发出告警,并且根据告警模式的不同用不同的方式警示飞行员,与利用告警包线的方法相比,前视地形告警方法更为精确,并且适用范围广泛。The function of forward looking terrain alarm is a very important part of the near ground alarm system,but the existing forward looking terrain alarm methods are all through the fitting envelope for alarm,this method is slightly less accurate.In order to improve the accuracy of forward looking terrain alarm,a simple forward looking terrain alarm algorithm is proposed in this paper,and a simulation verification platform is built for simulation verification.Firstly,the workflow of simple forward looking terrain alarm algorithm is proposed.Secondly,the calculation model of track prediction algorithm,limit pull starting point and advance warning time is established.Then a new alarm sub mode of forward looking terrain alarm is defined.Finally,a simulation verification system is designed using Qt.Through simulation verification,it can be seen that the simple forward looking terrain warning algorithm can send alarms in time and warn pilots in different ways according to different alarm modes.Compared with the method using alarm envelope,the forward looking terrain warning method proposed in this paper is more accurate and has a wide range of application.

关 键 词：前视地形告警 航迹预测 极限拉起点 提前告警时间 告警模式 

分 类 号：V275.1[航空宇航科学与技术—飞行器设计]