摘要
针对多分量LFM信号脉内特征的提取问题,提出了一种基于时频重排-Hough变换(TFR-HT)的特征提取方法,以重排后的时频分布作为图像,利用Hough变换检测图像中直线的原理,依次实现了对各分量的脉内特征提取.仿真结果表明,该方法能够有效地提取多分量LFM信号各自分量的脉内特征,同时具有较高的抗噪声性能.
An improved method for extraction of multi-component LFM Signal intra-pulse characteristics was presented. By regarding the reassigned time-frequency distribution as an image, the signal intra-pulse characteristics of the multi-component LFM signal were extracted respectively, based on the principle of detecting the line of Hough transform. The simulation results show that the proposed method can effectively extract each component intra-pulse characteristics of multi-component LFM signal, while it has better performance of anti-noise.
出处
《空军雷达学院学报》
2006年第1期28-30,33,共4页
Journal of Air Force Radar Academy
关键词
多分量LFM信号
时频重排
HOUGH变换
脉内特征
multi-component LFM signal
time-frequency reassignment （TFR）
Hough transform （HT）
intra-pulse characteristics
