机场噪声的可视化是机场范围内环境评价的重要方面，通过机场噪声的等值线分布图可以分析各个时段和地区的噪声大小，并据此调整航班计划和飞行航迹减少受影响地区的噪声强度。基于单飞行事件研究飞机噪声的动态分布情况，利用曲线分段拟合噪声值的变化规律并在此基础上预测实时的噪声值。为了避免常规的等值线绘制中遍历次数多、等值线计算复杂等缺陷，提出一种基于等值点摇摆的等值线网格队列算法，满足了动态绘制对时间复杂度的要求。%Airport noise visualization plays an important role in environmental evaluation of airport region. Through the airport noise contour map, the noise level anytime and anyplace can be analyzed, and the flight plan and flight path can be adjusted to reduce noise intensity in the affected region. In this paper, based on the analysis of aircraft noise dynamic distribution for single flight event, the curve’s piecewise fitting of the noise value was carried out. On this basis the real-time noise value was forecasted. In order to avoid the multiple plotting and the complicated contour computation in the conventional contour computing method, a method of contour grid queue algorithm based on equivalent point swing was proposed. The requirement of time complexity in the dynamic drawing was satisfied.
展开▼
