基于卫星信道的改进型XMODEM协议设计与实现

The design and implement of the improved XMODEM protocol based on the satellite channel

卫星信道具有误码率高、时间延迟大等缺点,普通文件传输协议应用于卫星信道文件传输具有效率低等问题,改进XMODEM协议帧格式及交互控制方式,使之更加适应于卫星信道等远距离无线通信信道数据传输要求,从而显著提高文件传输效率。

The satellite channel has the characters of high BER and Long delay,so the transfer on pure xmodem has the shortage of low efficiency. The improved XMODEM protocol meets the need of the file transfer on long distance channel such as the satellite channel, and increase the efficiency of file transfer.