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分析了被动天线阵列接收信号在成像系统中的相位传输过程,并将被动综合孔径光子成像与光综合孔径成像做对比研究,利用阵列缩比因子定义了成像系统的空间分辨率因子;分别通过对天线阵列分辨率和光纤阵列的空间分辨率的分析,深入讨论了缩比因子和空间分辨率因子对整个成像系统分辨率的影响,推导出空间分辨率的计算公式;通过仿真计算和分析,研究了天线接收辐射方向和缩比因子对空间分辨率因子的影响,以及二者对成像系统空间分辨率的综合影响,讨论了空间分辨率有关结论在被动综合孔径光子成像系统设计中的意义。
The transmission process of passive antenna array receiving signals in the imaging system is analyzed. The passive synthetic aperture photon imaging and optical synthetic aperture imaging are compared. The spatial resolution factor of the imaging system is defined by the array scaling factor. Antenna array resolution and spatial resolution of optical fiber array, the effects of scaling factors and spatial resolution factors on the resolution of the whole imaging system are discussed in depth. The formulas for calculating the spatial resolution are deduced. Through the simulation and analysis, The influence of the radiation direction and shrinkage factor of the antenna on the spatial resolution factor and the combined effect of the two on the spatial resolution of the imaging system are discussed. The significance of spatial resolution in the design of passive integrated aperture photon imaging system is discussed.