A system for determining the degree of dependence of the network characteristics of SpaceWire channels on the parameters of information interaction

Abstract

Tests of the SpaceWire technology only for compliance with the requirements of the standard are not sufficient to determine the possibility of using the technology as a means of ensuring information communication of onboard spacecraft systems. The requirements for the network characteristics of data transmission channels must also be met. To solve this problem, specialized stands similar to the SpaceWire integrated testing stand presented in the paper can be used. The tools of this development make it possible to calculate the network characteristics of data transmission channels, however, if they do not meet the required levels, it is necessary to determine the pos-sibilities for their improvement. This task can be solved in various ways, but the most preferable of them is to optimize the modes of operation of network elements. To do this, the system proposed in the paper can be used to determine the degree of dependence of the network characteristics of SpaceWire channels on the parameters of information interaction. The system built on the basis of processing information obtained during hardware and software modeling of the on-board information network with mathematical statistics tools allows one to determine how strong the influence of various parameters of information interaction is on a particular network characteristic of the SpaceWire channel in order to identify the possibility of adjusting these parameters to improve performance. The paper provides a complete description of the algorithm of the system starting from the formation of a sample for modeling and ending with the calculation of a sample analogue of the general correlation ratio based on the obtained data. An example of a typical application of the system is given. In conclusion, plans for further improvement of the development are presented. doi 10.54708/19926502_2024_2831053