基于航迹分割的航空器噪声预测模型

根据航空器的航迹来预测其影响区域的噪声情况，基于航迹的几何特性，将航迹分成直线段航迹和曲线段航迹两个基本航迹元素；确定了直线段和曲线段的各自影响范围之后，分别计算各航迹段对它们影响区域的噪声值贡献情况；统计了各个航迹段对监测点的噪声影响之后，综合得出整个航迹段对监测点的噪声影响，从而建立了航空器航迹噪声预测的模型。将该模型计算的结果分别和软件模拟数据、实际监测数据进行对比分析，发现该模型在航迹段内对监测点噪声均值的预测较为准确，监测点噪声峰值预测结果更接近实测数据。

Aircraft Noise Prediction Model Based on Flight Track Segmentation

To predict aircraft noise according to aircraft tracks, the aircraft tracks are divided into two basic track elements based on their geometric characteristics, i.e. the straight line tracks and the curve line tracks, and then the noise contribution of the straight line track and the curve line track are calculated respectively for their area of influence. After a statistical treatment of the noise impact on all segments of the track monitoring points, the noise finally comes together to affect the entire track segment monitoring points. Thus an aircraft track noise prediction model is established in this paper. Compared with similar prediction software and the actual monitoring data, the predicted average noise values of the present model are relatively accurate, and the predicted noise peak values are more accurate.