雷达俯视角对轴对称喷管测试RCS影响研究  

RCS Measurement of Axisymmetric Nozzle under Different Radar Overlook Angle

作　　者：郭霄[1] 杨青真[1] 施永强[1] 杨惠成[1] 

机构地区：[1]西北工业大学动力与能源学院,陕西西安710072

出　　处：《推进技术》2017年第8期1747-1753,共7页Journal of Propulsion Technology

摘　　要：为了研究雷达位置以及雷达波段对于轴对称排气系统电磁散射特性的影响,采用步进频率测试系统在暗室中测试了轴对称排气系统的后向雷达散射截面积(RCS);分析了俯视角对轴对称排气系统后向电磁散射特性的影响。试验结果表明:随着俯视角的增大,轴对称喷管的后向RCS会随之减小,在15°俯视角下排气系统的RCS是0°角下的30%;在不同频段下轴对称喷管的电磁散射特性基本相似。The backwards radar cross section （RCS） of the axisymmetric nozzle was measured in the mi- crowave chamber using the step frequency test system in order to study the effects of radar overlook angle and mi- crowave band on the backward electromagnetic scattering characteristic. The experimental results show that the RCS of the axisymmetric nozzle decrease with the increasing of the radar overlook angle. The RCS at 15° overlook angle is about 30% of the basic model. The variation regulations of electromagnetic scattering characteristics of the axisymmetric nozzle in different wave band are almost similar.

关 键 词：轴对称排气系统 步进频率 雷达散射截面积 雷达俯视角 

分 类 号：V237.0[航空宇航科学与技术—航空宇航推进理论与工程]