摘要
为了降低多输入多输出(multiple-input and multiple-output,MIMO)成像雷达的阵列规模和系统硬件的复杂性,结合宽带MIMO雷达发射/接收阵元的角度分集和信号分集特性,提出了一种基于双均匀线阵组合的非线性阵列模型,并给出了该阵列的设计准则。不同于基于实孔径均匀阵列的宽带MIMO雷达成像系统,提出的非线性阵列模型可有效增加虚拟阵元个数和扩展阵列孔径,在不改变目标方位向成像质量条件下能有效降低实孔径均匀线阵的阵列规模和系统硬件的复杂度。同时,该阵列设计易于操作和实现。最后,仿真实验对该阵列模型的有效性进行了验证。
In order to reduce the array element number and hardware complexity for the multiple-input and multiple-output（MIMO） imaging radar system,a nonlinear array model is proposed based on the combination of two linear arrays and its design rule is given,associated with the angle and signal diversity properties of multiple sparsely-located transmitters and receivers.Different from the wideband MIMO radar imaging system based on real aperture uniform linear array,the proposed nonlinear array model can increase the virtual array element number and enlarge the array aperture,and so can effectively reduce the dimension and hardware complexity of the real aperture uniform linear array without any obvious variety of cross-range imaging equality.Meanwhile,this array design can be implemented and achieved easily.Finally,simulation experiments show the effectiveness of this array model.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2010年第12期2541-2546,共6页
Systems Engineering and Electronics
基金
国家自然科学基金(60772152)资助课题
关键词
多输入多输出
逆合成孔径雷达
后向投影算法
雷达成像
multiple-input and multiple-output（MIMO）
inverse synthetic aperture radar（ISAR）
back-projection（BP） algorithm
radar imaging
