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为了有效开展傅里叶望远镜成像原理的外场实验,建立了傅里叶望远镜成像过程模型并进行了定量模拟,同时搭建了实验室仿真实验进行对比验证。首先,根据傅里叶望远镜成像原理将成像过程分解为多个阶段。然后,依据不同阶段对探测波面的不同作用建立了相应的波动光学模型,并在确定望远镜配置参数的基础上开展了成像过程的模拟验证。最后,搭建了相同配置的室内仿真实验并完成了对比验证和影响因素分析。结果表明:定量模拟验证与实验室内仿真验证有较好的一致性,在探测波长532 nm、信噪比大于等于100的情况下均能较好地重构出目标图像。对比验证可为傅里叶望远镜后续的外场实验提供参考。
In order to effectively carry out the field experiments of the Fourier telescope imaging principle, the Fourier Telescope imaging process model was established and quantitatively simulated. At the same time, a laboratory simulation experiment was set up for comparative verification. First, the imaging process is broken down into phases based on the Fourier telescope imaging principle. Then, based on the different effects of different stages on the detection wavefront, a corresponding wave optics model is established and the simulation of the imaging process is carried out on the basis of the configuration parameters of the telescope. Finally, the simulation experiment of indoor building with the same configuration is completed and the comparative verification and influence factor analysis are completed. The results show that the quantitative simulation verification is in good agreement with the experimental verification in the laboratory. The target image can be reconstructed well at the detection wavelength of 532 nm and the signal-to-noise ratio of 100 or more. The contrast verification can provide references for the follow-up field experiment of Fourier telescope.