Abstract: The airport noise visualization plays an important role in airport range environmental evaluation, through the airport noise isoline map we can analyze the noise level in real-time and any place, and adjust flight plan and flight path to reduce noise intensity in the affected region. This paper study aircraft noise dynamic distribution based on the single flight event, use curve piecewise fitting noise value change rule and on the basis of real-time forecast the noise value. In order to avoid the multiple ergodic and complex contour computation in the conventional contour computing method, this paper proposes a method based on equivalent point rocking isoline grid queue algorithm, satisfy the dynamic draw on time complexity requirements.

摘要： 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。

关键词: 声学, 机场网格, 噪声等值线, 曲线分段拟合, 动态绘制