飞机旋转叶片回波频谱特征分析

被引：3

作者：

冯孝斌

黄培康

机构：

[1] 中国航天科工集团二院所目标与环境电磁散射辐射国防科技重点实验室

来源：

系统工程与电子技术 | 2005年 / 03期

关键词：

目标识别; 调制谱; 扭角; 叶片;

D O I：

暂无

中图分类号：

TN953 [雷达跟踪系统];

学科分类号：

摘要：

飞机目标发动机叶片的周期性旋转运动导致目标散射回波中出现周期性运动部件调制频谱分量,在某些姿态下该频谱分量幅度呈sinc(x)包络状,并不对称分布于机体多普勒频谱分量一侧。为揭示这一现象,在对旋转叶片组建立电磁散射模型和对风扇目标进行试验测量基础上,分析了叶片长度、倾斜角和扭角等结构参数对周期性运动部件调制频谱分量分布规律的影响。结果表明叶片扭角是导致该现象出现的主要原因。

引用

页码：385 / 387+409 +409

页数：4

共 8 条

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