摘要
给出了雷达半主动寻体制的直升机旋翼回波模型,分析了直升机旋翼回波的时频特性,以旋翼真实参数对模型进行了仿真,并研究了直升机旋翼回波在时域上的调制效应及频域分布特点。结果表明:理论模型所得结果与外场实验的导引头跟踪直升机实验数据吻合。
The model of rotor blade echo signal of a hovering helicopter with radar semi active system was established in this paper. The characteristics of the echo in the time domain of the helicopter were analyzed. The simulation was done with the real parameter of rotor blade, and the modulation effect in the time domain and distributing characteristics in the frequency domain were studied. The results showed that emulation results of the backscattered model were agreed with the data of the seeker tracking the helicopter in the outfield experiments with the baekseattered model.
出处
《上海航天》
2009年第5期41-45,共5页
Aerospace Shanghai
关键词
悬停直升机
旋翼回波模型
调制
时频特性
频域分布
Hovering helicopter
Rotor blade echo signal model
Modulation
Characteristic in time domain
Distributing in frequency domain
