在分析空间瞬态光辐射信号成像特点的基础上，提出了一种在空间瞬态光辐射信号定位系统中，用高速浮点DSP芯片实现图像处理的方案．图像处理过程为：首先通过阈值分割滤除背景和弱噪音；然后根据目标信号的时空连续性进行目标识别以去除强噪音；最后对识别出的目标像点进行重心位置的提取．实验表明，该硬件图像处理方案具有高的实时处理性和定位准确性，可以很好的满足系统要求．

The imaging characteristics of spacial transient optical signal are introduced. A digital image processing method based on the high-speed Digital Signal Processor for spacial transient optical signal locating is proposed in this paper. The image processing procedure includes filtrating the background and weak noises by threshold segmentation,removing the strong noises by target recognition based on the continuity of target signal and calculating the centroid of target signal at last. Experiment results show that processing speed and measurement accuracy of this method are high,and can satisfy the request of locating system.