为了减少星敏感器等空间姿态测量仪器的测量误差，提升星点定心精度，通过研究图像探测器像素位置偏差对定心精度的影响，提出了一种基于相移干涉原理的像素位置偏差标定方法。基于像素响应不均匀性，构建具有像素位置偏差的探测器仿真模型并进行星点定心计算，仿真结果证明了像素位置偏差会导致定心结果产生系统误差。探测器像素标定结果表明，在添加均方根值为0.03 pixel的像素位置偏差以及5%幅值比的高斯白噪声条件下，该探测器像素标定方法的标定精度优于3×10-4 pixel(1σ)，研究结果为探测器像素位置偏差标定技术提供一种可行的方案，对于提升星敏感器等姿态测量仪器的测量精度具有重要意义。

An image encryption method combining the joint transform correlator (JTC) architecture with phase-shifting interferometry to realize double random-phase encoding is proposed. The encrypted field and the decrypting key are registered as holograms by phase-shifting interferometry. This method can encrypt two images simultaneously to improve the encryption efficiency of the methods based on JTC architecture, and eliminate the system alignment constraint of the methods based on Mach-Zehnder interferometer (MZI) architecture. Its feasibility and validity are verified by computer simulations. Moreover, image encryption and decryption can be achieved at high speed optically or digitally. The encrypted data are suitable for Internet transmission.

基于彩色图像三基色原理、菲涅耳变换全息和波长多路技术, 提出了一种光学彩色图像编码的新方法, 给出了相应的计算模拟结果。基于相移干涉技术和分数傅里叶变换, 提出了信息合成和加密的新方法。此外, 还利用光学Hartley变换来实现图像编码。