小角度旋转目标微波成象

Microwave Imaging of Targets Rotating in a Small Azimuth Angle Range

本文讨沦了小角度旋转目标成象技术。导出了适用于双站、单站、近场和远场成象测量条件的统一的图象再现算法;研究了超分辨力成象处理技术,并给出了一种将谱外推技术与目标粗略“形状”信息相结合的新的图象再现方法;最后,简要介绍了微波暗室成象实验结果及有关结论。

The paper is concerned with high resolution microwave imaging of targets rotating in a small azimuth angle range. An unified formulation for image reconstruction is derived, which is applicable for all bi-static, mono-static, near-field and far -field imaging geometries. The superresolution imaging techniques are discussed and a new image reconstruction algorithm, which combines the spectral extrapolation with the use of coarse shape information derived from the imaging measurement data, is suggested. Lastly, the imaging results obtained in an anechoic chamber and related conclusions are given.