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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。
According to the flight path of the aircraft, the noise of the affected area is predicted. Based on the geometric characteristics of the track, the flight path is divided into two basic track elements: the straight line track and the curve track. After calculating the impact of each track segment on the noise impact of the monitoring points, the noise impact of the entire track segment on the monitoring points is obtained, and thus the establishment of a Model of Aircraft Track Noise Prediction. The results of this model are compared respectively with the software simulation data and the actual monitoring data. It is found that the model predicts the noise mean of the monitoring points within the track segment accurately, and the prediction results of the noise peaks at the monitoring points are closer to the measured data.