INMARSAT Wireless Digital Communication System Establishing

China is an ocean Great Power who owns 32,000 kilometres of coastline, and own "the roof of the world " and the large desert. Now, the Inmarsat has been into the No.4 generation satellite times. The development of land digital communication means, the intellectual property rights ,safety and the benefit relation etc, lead to us have to explore the safe Inmarsat satellite digital communication software owing independent intellectual property right.The basis being to be third Inmarsat satellite system is listed in the main body of a paper having brought forward the systematic frame of Inmarsat digital communication software. Through the study in the Mini_M Inmarsat satellite terminal, serial port communication , efax communication business , the digital communication through the ISDN and the LES , The Inmarsat digital communication system hardware is formed.The design of software using the ADO data base in consumer and data management, it is the trend that the database technology develops. Has adopt the document structure designing that autonomously in data document. Adopt the backward sequence CRC checking , the LZSSC compression algorithm and here on the basis , designs that having realized wireless communication protocol. Be by protocol turn to be able to realize simplex, duplex operation and resuming of interrupted transfers. By the performance test of the software designs , the test contrast with Skyfile5.0 and the procedure and function analysis, we have found the factors and part of resolutions and reached satisfactory result. By the programming based on the TCP/IP protocol in local area network, have realized the minitype local area network interconnection. And have resolved problem that a team using a artificial satellite terminal, the history record show convenience to customers to store data.The designed has realized Email and the Efax function on the basis having ensured the rate in Chinese and English . By changing account setting up connection to LES to ensure that information is safe. At the same time, resolving the problem in the...