空间太阳望远镜星载偏振图像高速处理技术

空间太阳望远镜（SST）是我国独立发展的太阳磁场观测科学卫星；其主光学望远镜8个CCD以20MB／s的速率采集太阳偏振磁图；图像处理系统需要进行图像积分、CCD辐射劣化校正、目标的几何改正、Stokes参数计算和图像格式化等处理．SST在轨实时数据运算量达每秒数十亿次，我国现有星栽计算机系统的处理能力远远达不到SST的需求．针对这一问题，在系统处理任务分析的基础上，设计出了并行阵列处理的系统体系结构，并在单通道子系统样机的研制上，采用了FPGA加DSP的模块结构，在FPGA内设计了在线实时积分器，由DSP进行离线计算和格式化处理；还给出了DSP软件流程图；进行了系统仿真和原理样机的制作，经测试表明：该系统达到了SST的星栽高速数据处理要求．这种新型高速数据处理方法，可以广泛应用于我国未来航天的高速数据处理领域．

On-Board Polarized Images High-Speed Processing Technology for Space Solar Telescope

Space Solar Telescope (SST) is a magnetic field observation satellite. Its 8 CCDs of Main Optical Telescope (MOT) collect solar magnetic images with a velocity of 20 MB/s; Data processing system deals with such process as image integral, CCD calibration, object geometric correction, calculation of Stokes parameters and image formatting. SST's on-board real-time data calculation volume is several billion times per second, and current on-board computer system can't complete SST's tasks. On the basis of system processing tasks analysis, a parallel array processing system architecture is presented; During single channel subsystem development, FPGA and DSP module parallel array structure is adopted, in which the on-line real-time integrator is designed inside FPGA, and off-line calculation and image formatting is performed by DSP; DSP's software flowchart is also presented; System functional prototype is emulated and proved. The new high-speed data processing method can be also used in future space high-speed data processing fields.