提出变形分数傅里叶变换双随机相位编码技术。详细阐述了编码与解码的光学原理,由于变形分数傅里叶变换比分数傅里叶变换多两个分数傅里叶变换阶次,所以,变形分数傅里叶变换双随机相位编码技术比分数傅里叶变换双随机相位编码技术增加了两重密钥,进一步提高了系统的保密性能。并进行了计算机模拟验证,结果证明该原理是正确的。 Proposed a distortion fractional Fourier transform double random phase coding technology. The optical principle of encoding and decoding is expounded in detail. Because the distortion fractional Fourier transform is more than the fractional Fourier transform, the fractional Fourier transform order is more than that of the fractional Fourier transform. Therefore, The dual-leaf phase-shift random phase coding technique adds double keys, which further improves the system’s confidentiality. And computer simulation verification, the results show that the principle is correct.