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随着VSAT网络的不断发展,卫星信道越来越多地被用来传送基于IP协议的多种数据。为获取这类信息,本文对承载IP数据的卫星DVB信号传送数据的MPEG-2协议及多协议封装格式进行了深入研究,并结合实际数据对这些协议在实际数据中的应用进行了深入分析。对数据的分析采用了软件编程的方法,在协议逐层提取的基础上,对数据进行了逐层剥离,在剥离同时对数据按特定关键字段进行分类,得到了所需的邮件数据。最后给出了在VSAT网络卫星DVB信号中提取邮件的流程。
With the continuous development of the VSAT network, satellite channels are increasingly being used to transmit a variety of data based on the IP protocol. In order to obtain this kind of information, this paper deeply studies the MPEG-2 protocol and multi-protocol encapsulation format of satellite DVB signal carrying IP data, and analyzes the application of these protocols in real data with the actual data. The data analysis uses the software programming method, on the basis of layer-by-layer extraction of the protocol, the data is peeled off layer by layer. At the same time, the data is classified according to specific key fields while stripping, and the required mail data is obtained. Finally, the process of extracting mail from VSAT network satellite DVB signal is given.