光学遥感图像星上实时处理技术的研究

Study on On-board Real-time Image Processing Technology of Optical Remote Sensing

随着各种高分辨对地光学遥感器的发展,获取的遥感图像数据量呈爆炸性增长。发展光学遥感图像星上实时处理技术,是提高遥感图像数据的有效利用率、使其反演结果尽早反映观测区域实况的重要途径之一。文章分析了当前星上实时处理技术的发展现状,提出了采用开放式架构、以高性能的DSP/FP-GA为处理核心的处理系统的构建方法和关键技术,以实现可伸缩的功能扩展和对星上传感器获取的海量数据流图像的星上实时处理。

With the recent rapid development of varied high - resolution optical remote sensors, the amotmt of data increased explosively. So the on - board real - time data processing technology became one of the most important methods to improve the utilization efficiency of remote sensing image data and made the inversion result reflect the actuality of ob- served region as soon as possible. The present development situation of on - board real - time data processing on the satellites were illustrated firstly. Then the construction methods and key technology of such real - time processing system based on high - performance DSP/FPGA processors with opened architecture were proposed to realize the scalable function expansion and the on - board real - time processing of the massive image data stream from the remote sensors on the satellite.