基于CS算法的MIMO-SAR成像研究

Research on Multiple-Input and Multiple-Output SAR Imaging Based on CS Algorithm

多孔径子带合成技术是目前多发多收系统可工程实现的技术方案。该文深入研究了基于子脉冲频域合成的同步子脉冲合成和同相位中心合成两种合成方式,通过对相位补偿量的推导证明了同步子脉冲合成的复杂度和同相位中心合成方式的优势。并以此为基础,针对CS算法在MIMO-SAR系统的应用建立了相应的数学模型,提出了基于CS算法的MIMO-SAR系统的成像流程,并通过对某三发三收SAR系统的点目标和点阵目标的计算机仿真,验证了该方法的有效性。

Multiple apertures sub-band synthetic technique can be realized for multiple-input and multiple-output SAR at the state-of-the-art level.Two kinds of frequency sub-band synthetic techniques are researched.A mathematical model for MIMO SAR is proposed and the feasibility is analyzed.The image process of MIMO SAR based on CS algorithm is presented.The computer simulations show the effectiveness of the method.