旋转目标微波成象中的旁瓣抑制研究

本文首先引出了微波成象中的旁瓣抑制问题,介绍了这领域中前人已得到的结论。接着阐述了传统傅里叶谱分析中的窗函数不能用于旋转目标成象的原因,提出了变迹滤波器的求解方法。最后通过计算机仿真给出了不同相对带宽条件下低旁瓣特性和再现图象,结果是满意的。

ON THE REDUCTION OF SIDELOBES IN MICROWAVE IMAGING OF ROTATING TARGETS

The thesis introduces the sidelobe reduction in microwave imaging and some conclusions found by foreign scholar. We point out that window functions generally used in classical Fourier spectral analysis are not applicable to microwave imaging of rotating targets. The solution of the equations consisting of apodization filter coefficients is derived. Some examples of the lower sidelobe levels and the image reconstruction with different relative bandwidths are shown by computer simulation. We are satisfied with the results of simulation.