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用WehnerDonaldR .提出的实孔径三维成像技术 ,可以利用实孔径高分辨率雷达获得目标的三维图像。但是该方法的缺陷在于 ,如果雷达的参数一定 ,即距离维分辨固定 ,则在距离上不能分辨的散射点在方位上亦不能分辨。针对这一问题 ,提出通过在距离维采用超分辨技术 ,提高距离维的分辨率解决了以上问题 ;同时使用全局最小二乘法解决了由于采用超分辨方法而带来的振幅估计问题。仿真结果表明 ,新算法可以较好地解决以上问题 ,是可行的。
Real-aperture three-dimensional imaging proposed by WehnerDonaldR. Can be used to obtain three-dimensional images of the target using real-aperture high-resolution radar. However, the drawback of this method is that if the radar parameters are fixed, that is, the distance dimension is fixed, the scattering point that can not be resolved in distance can not be resolved in azimuth either. To solve this problem, we propose to solve the above problem by using the super-resolution technique in the distance dimension and increasing the resolution of the distance dimension. At the same time, the global least squares method is used to solve the amplitude estimation problem caused by the super-resolution method. The simulation results show that the new algorithm can solve the above problems well and is feasible.