Beidou data transmission system based on ocean buoy and data packet header compression method

Abstract

The invention discloses a Beidou data transmission system based on an ocean buoy and a data packet header compression method. The Beidou data transmission system comprises a Beidou sending terminal, asatellite transfer station and a Beidou receiving terminal, the Beidou sending terminal comprises a sending terminal receiving module, a data judgment module, a header compressor, a subpackage module, a protocol encapsulation module and a sending module, and is used for receiving and compressing long message data, performing subpackage processing to obtain a short message data packet and sendingthe short message data packet. The satellite transfer station is used for receiving the short message data packet of the Beidou sending terminal and forwarding the short message data packet to the Beidou receiving terminal according to the Beidou receiving terminal identification number carried in the short message data packet; the Beidou receiving terminal comprises a receiving terminal receivingmodule, a protocol deblocking module, a judgment module, a packing module, a decompression module and an output module, and is used for receiving, protocol deblocking, judgment, packing and output ofshort message data packets of the satellite transfer station. According to the invention, the compression efficiency is improved, and the confidentiality of Beidou data transmission is enhanced.

Description

technical field [0001] The invention relates to a data packet compression method and a transmission system, more specifically, to a Beidou data transmission system based on ocean buoys and a data packet header compression method. Background technique [0002] my country's Beidou satellite navigation system has a unique short message communication function, which can provide users with simple data transmission services. However, due to the limited number of bytes sent in each short message, after deducting the header and tail lengths of the protocol encapsulation, a message can only effectively send content with a length of 78 bytes, and the Beidou sending terminal needs to send it every 60 seconds. Send a short message. Since the deep-sea self-sustaining profile buoy is going to dive to a depth of 4 kilometers, the sent information contains date and time, temperature, salinity, depth, oil volume, and voltage data, which contains 55 bytes. Therefore It takes many rounds to s...

AI Technical Summary

Problems solved by technology

In addition, the Beidou message communication is transmitted in plain text, which has poor confidentiality, and there are data security issues that can be intercepted and cracked

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