利用Hadamard变换的去相关性能和3D小波视频编码的帧结构特性，提出了一种新的面向空间通信视频编码算法的业务流模型。实验结果表明，新模型产生的仿真数据能够匹配视频源数据的概率密度函数，能够模拟空间通信视频源数据的短时相关性和长时相关性，在漏桶评估实验中，模型仿真数据与视频源数据的排队性能匹配效果好，可以作为空间通信系统研究的视频源模型。

In this paper，we propose a traffic model for space communication video algorithm. The model makes good use of decorrelation performance of Hadamard transform and the characteristic of GOP structure of 3D (3 Dimension) wavelet video algorithm. We demonstrated the validity of our model by statistical measurements and Bit Loss Rate performance evaluation. The model is proved to be simple and efficient. It is suitable for the research of space network communication systems as the video source model.