MIMO雷达波束方向图及其旁瓣抑制方法

给出了多输入多输出(multiple input multiple output, MIMO)雷达波束方向图的数学表达式，它为发射和接收方向图的乘积。假设接收阵元为半波长配置，通过分析发射阵元的间隔配置，得出如下结论：当发射阵元为一倍或Mr（接收阵元数目）倍半波长间距时，波束方向图将不会产生高旁瓣；当发射阵元的间距介于两者之间时，波束方向图将会因发射端的栅瓣效应而造成高旁瓣电平。针对后者引起的高副瓣情况，提出了利用接收波束合成算法来对消发射阵元的栅瓣，进而有效地抑制旁瓣。仿真实验验证了理论分析的有效性。

Beam pattern and side-lobe suppression based on MIMO radar

The beam pattern of multiple-input multiple-output(MIMO) radar is derived analytically,which shows that it is the product of transmitter and receiver beam pattern.By assuming that the receiver inter-element is half-wavelength spacing,this paper analyzes the inter-element spacing of the transmitter,and gets the follow conclusion: when the transmitter inter-element is half-wavelength or Mr/2-wavelength spacing(Mr is the transmitter elements),the beam pattern of MIMO radar cannot form the high side-lobe.And wh...