机-星-地遥感图像传输系统的设计

Design of Aircraft-satellite-earth Remote Sensing Image Transmission System

机-星-地系统在遥感图像的传输中十分重要。该系统设计的关键是系统各组成部分的功率分配,决定系统实现的制约因素是遥感图像压缩电路的性能。文章根据遥感图像传输的要求,首先计算了系统各级所应具备的发送功率,然后根据飞行器的有效发送功率决定的传输带宽上限设计了基于小波方法的遥感图像压缩处理系统,详细分析了系统的小波基选择、系统总体框图及视频图像压缩电路的具体技术路线。实验结果表明,该系统设计方案可行,性能满足机-星-地遥感图像传输的需求。

Aircraftsatelliteearth system is very important in remote sensing image transmission. The key point for such system designing is the distribution of system power among subsystems. The realization possibility of this system depends on the performance of remote sensing image compression circuit. According to the demands of remote sensing image transmission, this paper first computes the distribution of power among subsystems. Secondly, a remote sensing image compression system based on wavelet is designed according to transmission power of aircraft, emphasized on the selection of wavelet basis, the function block diagram of system and the details of video compression circuits. The experiment results show that the system design scheme is realizable and its performance satisfies the demands of aircraft-satellite-earth remote sensing image transmission system.