一种相参Radon变换的高速微弱目标检测方法

针对高速微弱目标回波信号,进行长时间相参积累时出现的跨距离单元走动问题,文章采用基于图像旋转的方法实现相参Radon变换,并提出将信号空间变换到极距-多普勒域进行峰值检测。通过理论分析和数值仿真结果表明,该方法具有较高的积累增益和检测性能,能有效地避免多普勒模糊的影响。

A Coherent Radon Transform for High-speed and Weak Target Detection Method

Focusing on the across range unit migration during the long-term coherent integration period for high-speed and weak target, echo signal the coherent Radon transform based on image rotation is implemented in this paper, and a novel peak detection method is proposed in Pole Distance-Doppler Domain transformed from Signal Domain. The theoretical analysis and numerical results show that a higher coherent integration gain and better detec- tion performance and the Doppler ambiguity can also be avoided efficiently.