On-board router simulation method of delay-tolerant network

Abstract

The invention provides an on-board router simulation method of a delay-tolerant network. The on-board router simulation method of the delay-tolerant network comprises the steps that (1) an on-board router model is constructed by combining a CCSDS and a DTNRG, and feasibility and validity verification is conducted in an OPNET; (2) conversion between a virtual data stream and a real data stream is achieved based on an SITL interface of the OPNET, and the processing capacity of a gateway is verified; (3) relevant inter-satellite and satellite-to-ground data in a network topology are obtained through an STK and are introduced into simulation software for simulation of an inter-planetary network; (4) relevant settings such as the delay and the error rate are conducted on a network damage instrument, and a spatial link is simulated. The on-board router simulation method of the delay-tolerant network has the advantages that the on-board router model is provided by organizing existing space communication protocol systems, and preparation is made for realizing a DTN protocol system in China and studying the key technology of a spatial information network; due to the combination of software and hardware, real simulation of the environment of a satellite network is achieved, and the adaptability of an on-board router to the spatial environment can be verified easily.

Description

[0001] technical field [0002] The invention belongs to the two fields of satellite network technology and computer technology, and specifically relates to a method for simulating an on-board router of a delay-tolerant network. Background technique [0003] At present, my country's aerospace industry has entered a period of rapid development. The number and types of space vehicles launched by my country have increased to a large extent compared with the past. The rapid development of aerospace technology and space applications has put forward an urgent need for space network research. The great success of the terrestrial Internet makes people naturally think of moving the working mode of the terrestrial Internet to the space network. The advantages of the terrestrial Internet IP protocol system are high technical maturity, greatly reduced space cost, and easy upgrade. In 2001, the Goddard Space Center of the United States launched a research project named OMNI [1], which ma...

AI Technical Summary

Problems solved by technology

This method can simulate the space network more realistically, but the simulation cycle is very long, which is close to the verification test system on the ground. Although the equipment development platform is on the PC, the overall framework of the entire communication software does not change during the transplantation process.

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