为了采用T型激光发射阵列的傅里叶望远镜对深空暗、弱、小目标进行高分辨率成像探测, 研究了T型发射阵列情况下的图像重构算法.借鉴点面激光发射阵列, 提出了准相位闭合概念, 分别得到了T型发射阵列的最小二乘法(LMS)和加权噪声的Wiener滤波图像重构算法, 完善了T型激光发射配置的傅里叶望远镜成像系统, 为实际工程系统的实施奠定了技术基础.在不同成像信噪比条件下对整体系统数值模拟发现: 相比直接傅里叶逆变换方法, 重构图像成像质量有所提升, 特别是当成像信噪比较低时, 如SNR为50时, LMS和加权噪声的Wiener滤波方法重构图像的斯特里尔比分别提高了7%和8.4%, 证实了该方法的可行性和正确性.

To apply Fourier Telescopy (FT) based on T type laser transmitter array to detect remote targets of dim, weak and small in high resolution, a new image reconstruction algorithm is proposed. The image reconstruction algorithm of dot-plane type laser transmitter array is used for reference proposes a concept which is named informal phase closure (IPC). The least mean square (LMS) reconstruction method and weighted noise Wiener filter algorithm (Wiener) are obtained perfect the FT system imaging quality of T-type laser transmitter configuration. The image reconstruction algorithm will lay the technical foundation for the implementation of practical engineering system. By the numerical simulation the overall system under different signal to noise ratios (SNR) of imaging conditions, imaging quality is improved, when the imaging SNR is low, such as SNR is 50, compared to directly inverse Fourier Transform method, the Strehl Ratios (SR) of reconstruction images of using the LMS and Wiener algorithms are respectively increased by 7% and 8.4%. The simulation confirms the feasibility and validity of the LMS and Wiener algorithms.