【摘要】 在深入了解超综合孔径辐射计的工作原理和成像性能的基础上,首次推导了超综合孔径辐射计在近场条件下采用傅氏反演方法进行成像的基本理论,并给出了超综合孔径辐射计的空间分辨率和灵敏度公式。随后,研制了由两个天线单元组成的最简单的毫米波超综合孔径辐射计原理样机,并分别用傅氏反演法和传统的匹配滤波法成功地反演得到了一维噪声点源的图像。实验结果验证了傅氏反演方法的正确性以及毫米波超综合孔径辐射计的成像能力,最后对超综合孔径辐射计和干涉式综合孔径辐射计的工作特点进行了比较。更多还原

【Abstract】 Based on the theory and imaging performance of super-synthesis radiometers,the near-field Fourier inversion imaging theory of SSR is deduced,and the spatial resolution and sensitivity formula of SSR are presented.The SSR including two antenna elements is designed,and one dimensional imaging experiment of noise point sources is fulfilled using a matched filtering method and Fourier inversion method respectively.The result of experiment shows that Fourier inversion method is correct.Finally,a comparison between SSR and synthetic aperture interferometric radiometer is given.更多还原