A construction method of deep space communication network simulation verification platform

Abstract

The invention discloses a method for constructing a deep space communication network simulation and verification platform, comprising: using a Raspberry Pi to simulate a communication node, using a switch to connect all the communication nodes into a network, and controlling all the communication nodes through a main control computer; Configure static IPs for all communication nodes in a bridge mode; all communication nodes perform time synchronization, integrate the synchronization actions and set them to self-start at boot; configure static ARP for each communication node, integrate the configuration operations and set them to self-start at boot; Perform deep space communication link status simulation and integrate configuration operations; perform communication node simulation, implement protocol stack implementation and data stream transmission on the entire simulation verification platform. The method of the present invention has the advantages of simple operation and strong achievability, the constructed platform has low cost, small occupied space, easy management, strong applicability to different deep space communication network scenarios, and strong adaptability to changes of network scenarios, and The verification results are close to the actual situation.

Description

technical field [0001] The invention relates to the field of deep space communication network testing, in particular to a method for constructing a deep space communication network simulation verification platform. Background technique [0002] Due to the high cost of counterfeiting spacecraft, most of the early space communication network experiments were carried out on the ground. There are three main types of network simulation platforms. [0003] The first is to use network simulation tools such as OPNET and NS2 to construct a virtual network and transmit virtual data, so as to conduct simulation experiments on space communication networks. This method is simple and easy to implement, but its disadvantage is that the simulated link environment and the experimental process are both For virtual parameters and processes, most of the results are theoretical values, which may deviate from the actual situation. [0004] The second way is to use a virtual machine, each virtua...

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Problems solved by technology

[0003] One is to use OPNET, NS2 and other network simulation tools to construct virtual networks and transmit virtual data to conduct simulation experiments of space communication networks. This method is simple and easy to implement, but its disadvantage is that the simulated link environment and the experimental process are both It is a virtual parameter and process, and the results are mostly theoretical values, which may deviate from the actual situation

[0004] The second way is to use a virtual machine, each virtual machine can be used as a communication node, and the real data transmission of multiple communication nodes can be realized on the same computer, but this method requires higher performance of the computer running the virtual machine , so there should not be too many communication nodes, and only a network with fewer communication nodes and simpler scenarios can be simulated, and the communication between virtual machine communication nodes is likely to be affected by the local machine, resulting in deviations in experimental results

[0005] The third way is to use multiple PCs to build a network simulation platform. Each PC is used as a communication node to transmit real data, and a network emulator is used to simulate the real link environment. The experimental results obtained in this way are closest to the actual However, if there are many communication nodes, the cost will be higher, and it will occupy a large space and be difficult to manage

[0006] At present, there is no method for constructing a deep space communication network simulation verification platform that can overcome the shortcomings of the above three methods and combine the advantages of the above three methods

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