Architecture of onboard control system for small spacecrafts based on network technologies

The methods of organizing the network interaction of onboard spacecraft equipment on the basis of SpaceWire standard are considered. The architecture of the reconfigurable onboard control complex is proposed. With the aim of ensuring reconfigurability, software customization, universality and satisfaction with the current international and Russian standards for the operation of spacecrafts and onboard equipment, the basis of the onboard computer system under development is the trunk-module principle of hardware integration. This allows to create on board a single information space based on the onboard communication network standard SpaceWire / SpaceWire-RUS. The main computing unit of the complex is a central processing unit, and the network architecture is built on the basis of routing network switches. This allows to organize a modular construction of the complex, based on the principle of interchangeability of the hardware modules included in its composition. This approach allows integration of various onboard equipment into a single information and computing system based on standard interfaces...