Method for drawing aircraft noise contour map

Abstract

The invention discloses a method for drawing an aircraft noise contour map. The method comprises the following steps of: 1, establishing a flight program noise contour map feature library; 2, excavating the incidence relation of monitoring points: excavating the historical noise data of an airport by adopting a hierarchical clustering method to discover the incidence relation of noise monitoring points; 3, drawing the noise contour ma: firstly drawing an incomplete contour map according to the incidence relation of actually measured noise data of measuring points and the monitoring points under a single flight incident, then extracting the characteristics of the incomplete contour map, then matching the extracted characteristics of the incomplete contour map in the flight program noise contour map feature library, and finally correcting a matched noise contour map by utilizing instantaneous noise data obtained by being monitored on a small quantity of sparse monitoring points to complete the drawing of the noise contour map. The method disclosed by the invention has higher instantaneity and practicability.

Description

technical field [0001] The invention relates to a noise visualization method, in particular to a noise contour map drawing method based on sparse measured instantaneous noise data, and belongs to the field of noise visualization. Background technique [0002] With the rapid development of the civil aviation industry and the gradual improvement of people's environmental awareness, the problem of airport noise has become increasingly prominent. How to effectively control the impact of airport noise on residents around the airport is a very important issue. For this reason, my country's environmental protection department stipulates that when building, rebuilding and expanding airports, it is necessary to conduct noise environmental impact assessment around the airport, and the airport noise contour map is an important tool for airport noise environmental impact assessment. Provide basis for surrounding land use planning. Therefore, it is of great significance to quickly and ac...

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Problems solved by technology

[0003] Airport noise contour map is an important tool for visualization of airport noise. At present, foreign airport noise contour drawing methods mainly rely on software such as INM, Noisemap, and Suffer. Such software takes flight tracks as input data and passes a A series of integrated algorithms output theoretical noise contour maps. These software do not have the function of drawing contours based on the actual noise value of the airport, so there is a certain degree of deviation between the airport noise contours drawn by them and the actual airport noise contours ; Chinese invention patent application number is ZL200510066109.6 discloses a rectangular grid method for drawing contour maps of geological bodies with normal faults; Chinese invention patent application number is 201110260312 discloses a contour interpolation method; China The invention patent application number is 201310113754.3, which discloses an airport noise visualization method based on grid queue and segment fitting. The method introduced in it draws contour lines based on grid data, but the existing airport noise contour map drawing Most of the methods require a large amount of noise measurement data. Since the number of noise monitoring points in existing airports is relatively limited, for example, there are only 21 noise monitoring points in China's Capital Airport, so the above-mentioned small amount of detection point data is not enough to support the use of these methods. Draw contours; therefore, it is particularly important to design and develop a method for drawing contour maps of aviation noise that can make full use of historical airport data and reduce the dependence on data in the process of contour map drawing

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