In this paper, we firstly construct a wide-band undersampling array, then present a novel frequency and direction of arrival (DOA) estimation method for a very wide frequency band (2-18GHz). Choosing a set of appropriate sampling frequencies and

可实现对二维数据的聚类，包括压缩比、运行时间和计算复原图像的峰值信噪比,对信号进行频谱分析及滤波。- Can realize the two-dimensional data clustering, Including compression ratio, image restoration computing uptime and peak signal to noise ratio, The signal spectral analysis and filtering.