一、引言民航发展初期,噪声测量是为了机组人员和乘客的舒适和安全。随着飞机运输量的增加,发动机功率也迅速增长。飞机噪声严重影响机组人员间的交谈并干扰乘客。近年来,飞机噪声越来越高,它不再作为机内少数人交谈和舒适的问题,增高了的噪声影响舱内精密仪器设备的正常工作,引起机身蒙皮的声疲劳,还影响机场地面人员的工作和生活。当飞机以 I. INTRODUCTION In the initial stage of civil aviation development, the noise measurement was for the comfort and safety of crew and passengers. With the increase of aircraft traffic, engine power also increased rapidly. Aircraft noise severely affected conversations between crew members and disrupted passengers. In recent years, the aircraft noise is getting higher and higher, it is no longer as the conversation and the comfort of a few people in the machine, the increased noise affect the normal operation of precision equipment in the cabin, causing the body skin sound fatigue, but also affect the airport Ground crew work and life. When the plane comes