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体全息存储技术是一种超越现有串行存储方式的并行存储技术,同时又兼备内容寻址的功能。能实现高密度、大容量、高传输率的数据存储及并行多通道光计算。利用体全息相关器作为基准图像库和粗处理微处理器,与传统光电系统相结合,可并行地进行实时图像与基准图像的相关匹配,快速进行复杂景象的搜索与识别,进行快速飞行目标的锁定和跟踪。由于匹配算法的并行性,可大大减小由于处理延迟而产生的跟踪误差。在高分辨率精准导航定位或侦察监视系统中,由于目标图像及图像库数据容量大,采用体全息存储相关技术结合DSP处理技术,对大幅面数据页在大规模图像库中进行进行快速搜索截获,可以将处理速度大为提高。文中简要介绍了体全息存储及相关识别的原理;多通道体全息存储快速目标识别的系统结构;提高体全息相关器通道密度的方法;提高识别精度的方法;基于体全息相关识别的图像预处理算法;基于体全息存储技术的地形匹配技术与目标跟踪技术;最后展望了光学多通道体全息快速目标识别技术在以大数据量,高速,精准为特征的导航定位或侦察监视等武器平台中的应用前景。
Volume holographic storage technology is a kind of parallel storage technology that surpasses the existing serial storage mode, meanwhile it possesses the function of content addressing. Can achieve high-density, high-capacity, high-rate data storage and parallel multi-channel optical computing. Using holographic correlator as datum image library and rough processing microprocessor, combining with traditional optoelectronic system, the correlation matching of real-time image and reference image can be carried out in parallel, the search and recognition of complex scene can be quickly performed, and the target of rapid flight Locked and tracked. Due to the parallelism of the matching algorithm, tracking errors due to processing delays can be greatly reduced. In the high-resolution precision navigation and positioning system or reconnaissance and surveillance system, due to the large capacity of the target image and image library data, the volume holographic storage technology and the DSP processing technology are used to perform large-scale image database retrieval of large format data pages , You can speed up the processing speed. In this paper, the principles of volume holographic storage and related recognition are briefly introduced. The system structure of fast target recognition of multi-channel holographic storage is introduced briefly. The method of increasing the channel density of volume holographic correlator is presented. The method of improving the recognition accuracy is presented. Algorithm; the terrain matching technology and target tracking technology based on volume holographic storage technology; Finally, the optical multi-channel holographic fast target recognition technology is forecasted in the weapon platform of navigation and positioning or reconnaissance and surveillance with the features of large data volume, high speed and precision Application prospects.