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自适应光学波前处理器是自适应光学系统的核心部件之一,它必须实时完成自适应光学系统中所有信号处理任务.本文在对波前复原算法分析的基础上,根据算法内在的并发性,提出一种流水式多SIMD(单指令多数据流)并行处理结构.这种结构可以使波前处理器完成对帧频为850Hz,象素点为128×128视频图像的实时处理,整个系统的处理延迟小于1/4帧周期.
Adaptive optical wavefront processor is one of the core components of adaptive optics, which must complete all signal processing tasks in adaptive optics in real time. Based on the analysis of the wavefront recovery algorithm, this paper proposes a pipeline-parallel multi-SIMD (Single Instruction Multiple Data Stream) parallel processing architecture based on the inherent concurrency of the algorithm. This kind of structure can make the wave front processor finish the real-time processing to the frame rate of 850Hz, the pixel point is 128 × 128 video images, the processing delay of the whole system is less than 1/4 frame cycle.