发动机尾焰微波衰减测试方法研究

Research on Measurement Method of Microwave Attenuation of Motor Plume

基于发动机试验环境,研究了发动机尾焰微波衰减的测试方法,搭建了一套微波衰减测试系统,能够实现多频点测量,并对发动机尾焰微波衰减测试系统的研究路线、测试原理、硬件组成、现场布局、测试系统定标技术、测量设备不确定度、试验结果进行了介绍;试验结果表明,该测试系统具有较好的测试效果,测试精度能够满足要求。经过现场试验获得大量实测数据,通过有效的数据处理,能够预估发动机尾焰对微波信号传输的影响。

In this paper,a measurement method of microwave attenuation of motor plume is researched.A microwave attenuation measurement system is built based on the motor experimental environment,and this system can realize multifrequency point measurement.The studying way,test principle,hardware composition,field layout,calibration technology,uncertainty of measurement equipment and experimental results of the system are introduced.The experimental results show that the measurement system has a good measuring effect,and the precision meets the requirements.A large number of measurement data were obtained after field tests,we can estimate the influence of motor plume on microwave signal transmission through effective data processing.