基于混沌高斯频率调制的距离-多普勒雷达成像

提出了利用混沌映射产生随机抽样的方法。进一步证实了高斯抽样可以通过两类随机数产生器结合混沌映射生成。利用高斯抽样,得到了高斯调频雷达信号。研究结果表明,通过这种高斯调频信号得到的模糊函数接近2维delta函数,它在距离-多普勒平面上的旁瓣是均匀分布的。对该高斯调频信号进行傅立叶处理可以得到高分辨率的距离-多普勒图像,图像品质较高。

Range-doppler Radar Imaging based on Chaotic Gaussian Frequency Modulation

The method of generate random samples using chaotic maps is proposed.More specifically, Gaussian samples can be generated via two random number generators that utilize chaotic maps is demonstrated.The Gaussian FM radar signals can be obtained using Gaussian samples.The experiment results show the ambiguity function based on this kind of Gaussian samples approaches an ideal two dimensional delta function with uniformly distributed side-lobes on the range-Doppler plane.The Fourier processing of the Gaussian FM signal can yield a high-resolution range-Doppler image.The performance of the reconstruction image is fine.