星载多模式和多通道图像采集与处理

Spaceborne multi-mode and multi-channel image acquisition and processing

为了获取遥感卫星相机多模式与多通道的遥感影像,提出了星载多模式和多通道图像数据采集与处理系统的设计及实现方法,可将卫星在常规模式与降轨模式下的多通道图像数据采集并传输给存储系统,解决了现有星上存储单机无法并行存储多路数据的问题。设计了可兼容常规模式和降轨模式的多通道图像采集模块,将采集到的图像数据进行多模式图像处理,通过轮询调度算法实现多路图像归一化处理,最后通过Aurora64/66b传输协议将经过处理的图像数据传输给存储系统,完成了数据的高效采集与处理。经过实验测试,系统数据采集传输速率可达9.2 Gb/s,采集数据准确,零误码。系统稳定可靠、实时性好,满足实际卫星使用需求。

In order to obtain multi-mode and multi-channel remote sensing images of remote sensing satellite cameras,this paper proposes the design and implementation method of spaceborne multi-mode and multi-channel image data acquisition and processing system,which can collect and transmit multi-channel image data of satellites in conventional mode and deorbit mode to the storage system,which solves the problem that the existing on-board storage unit cannot store multi-channel data in parallel.A multi-channel image acquisition module compatible with conventional mode and down-orbit mode is designed,and the collected image data is processed in multiple modes,multi-channel image normalization processing is realized through the polling scheduling algorithm,and finally the processed image data is transmitted to the storage system through the Aurora64/66B transmission protocol,completing the efficient acquisition and processing of data.After experimental testing,the system data acquisition transmission rate can reach 9.2 Gb/s,and the collected data is accurate and zero bit error.The system is stable and reliable,with good real-time performance,and meets the actual satellite use needs.