基于Radon-Wigner变换的多分量LFM信号的检测

Analysis of Multicomponent LFM Signal Based on Radon-Wigner Transform

Radon- Wigner变换是一种直线积分的投影变换 ,它对多分量 L FM信号提供了较好的时频局域性 ,从而有利于多分量 L FM信号的解释和分析 .通过时域解线调和频域解线调处理可以完整地在时频平面计算出 Radon变换 .对于多分量 L FM信号的分析好于 Wigner- Ville变换等常用的时频变换 .

We demonstrate a method of time-dechirping and frequency-dechirping to efficiently calculate the Radon-Wigner distribution. Compared with Wigner-Ville distribution, Radon-Wigner distribution has better performance for analysis of multicomponent LFM signal. An example shows the potential of the Radon-Wigner transform for pattern recognition of multicomponent LFM signal.