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针对A-SMGCS系统场面活动三维仿真问题,提出一种以开源模拟飞行器FlightGear为场景仿真平台,以实时ADS-B监视数据为驱动,以Linux为操作平台的机场场面活动三维仿真系统设计新方法。仿真系统按照实际机场模型进行机场布局设计,飞机、航站楼、塔台三维建模,地形数据生成,对真实机场环境进行了完整建模。由于ADS-B监视数据缺少飞机姿态信息,提出一种根据位置数据推算出姿态信息的新方法。首先把ADS-B监视数据进行航迹卡尔曼滤波,然后根据飞机前后两个位置的空间连线矢量计算飞行姿态。通过FlightGear多机网络数据接口导入飞机定位数据与姿态数据驱动飞机模型运动,实现了对飞机运动的六自由度仿真。仿真结果表明,该系统能逼真、准确再现真实机场飞机实时活动情况。由于完全基于开源软件设计,该系统低成本实现了对场面活动的实时三维仿真。
Aimed at the three-dimensional simulation of A-SMGCS system scene activity, this paper proposes a new method of designing three-dimensional simulation system of airport scene activity driven by open source simulator FlightGear as scene simulation platform, real-time ADS-B surveillance data and Linux as operating platform. The simulation system according to the actual airport model for airport layout design, aircraft, terminal building, tower three-dimensional modeling, terrain data generation, the real airport environment is fully modeled. Since ADS-B surveillance data lacks aircraft attitude information, a new method of estimating attitude information based on location data is proposed. First, ADS-B surveillance data are tracked Kalman filter, and then based on the space before and after the two lines of connection vector calculation of flight attitude. The FlightGear multi-machine network data interface is used to import the aircraft position data and attitude data to drive the airplane model movement and realize the six-degree-of-freedom simulation of the aircraft movement. The simulation results show that the system can vividly and accurately reproduce the real-time activities of real aircraft. Due to the completely open source software design, the system realizes the real-time three-dimensional simulation of scene activity at low cost.