MIMO雷达三维成像方法研究

针对传统逆合成孔径雷达（ISAR）成像技术中存在的运动补偿难题,通过使用确定性阵列和单次快拍空间并行采样取代传统ISAR中非确定性阵列和长时间多脉冲采样,给出了一种基于多输入多输出雷达的双线阵宽带信号高分辨三维成像方法.由于采用了正交编码波形,使得距离维和方位维成像可独立进行,同时采用的垂直双线阵模式实际等效完成了平面阵列的采样功能,大大减少了阵元个数.仿真实验证实了该算法的有效性.

Study on the Approach of 3D Imaging for MIMO Radar Systems

Aimed at the difficulty of motion compensation in the inverse synthetic aperture radar （ISAR） imaging, an approach of high-resolution 3D imaging based on the perpendicular double-linear arrays wideband signals in an MIMO radar system was proposed, in which a deterministic array and single-shot spatial parallel sampling were employed to replace respectively the nondeterministic synthesized array and long-time multi-pulse sampling used for the conventional ISAR imaging. The imaging in the dimensions of range and azimuth could be implemented separately by using the orthogonal coding waveforms, while the perpendicular double-linear arrays functioned equivalently as the sampling of plane arrays, reducing dramatically the number of array units used. Simulation results show that the proposed approach is feasible.