Research on the method of using ANP data to predict aircraft lateral noise

The measurement points for the approach and takeoff noises are basically fixed. However, in the actual noise measurement process, the measurement points for lateral noise can not be fixed, so the lateral noise level is difficult to measure accurately. By using the ANP database provided by SAE, we can calculate the effective perceived lateral noise levels of different aircraft during takeoff. This includes the calculation of takeoff profile track and the use of NPD (Noise-Power-Distance) data interpolation calculation to determine the noise level correction parameters. Through the lateral noise data of different types of aircraft obtained under standard state, we can further determine the lateral noise measurement positions, so that more accurate noise data can be gathered in the actual measurement process. This can not only help to predict the noise of the same type of aircraft, but also shorten the cycle of new aircraft noise certification.