Research And Application On Isoline Dynamic Drawing Based On The Single Flight Noise

With the development of society and the air traffic increases increasingly, unreasonable airportexpansion and flight plan has caused bigger airport noise and a greater social contradiction. How toscientifically display the airport noise has become a research hotspot. The airport noise contour mapplays an important role in describing, analyzing and evaluating airport noise, also effectivedetermining the airport site selection, reasonable planning its surrounding land. Draw the airport noisecontours plays an important role in controlling airport noise to related departments. In view of this,this paper is from the our country airport noise visualization study of deficiencies, to the capitalairport noise monitoring data as the research object, put forward a single flight noise isoline dynamicrendering research direction. The main contributions of this dissertation are summarized as follows:(1)Based on the analysis of capital airport noise monitoring and visualization, according to thenoise contour drawing the requirements of the rules of discrete monitoring site noise monitoring dataspatial interpolation processing, mesh generation of noise data set for contour drawing, making gooddata preparation.(2) Based on piecewise fitting method for real time noise monitoring data to predict in advance,the history of noise data based on the training model, generating dynamic rendering time slice unitnoise in the data set, and by monitoring the noise value to dynamic amendment forecasting model.(3)Based on contour grid queue method dynamically calculates real-time equivalent pointinformation, in the first moment contour grid queue search on the basis of current time equivalentpoint information, and each time the equivalent point information to the grid in the form of a queuestorage, the real-time contour grid queue within the grid, contour tracing algorithm of all equivalencepoint connection, to generate the complete contour.(4) Study the isoline smoothing algorithm, and compare the smoothing effect and the efficiency ofthe algorithm in the test data set with linear iterative method and Bezier spline method respectively,and select the better linear iterative method to airport noise isoline smoothing, generating a smoothnoise isoline map.