Implementation of radiation-resistant encoding within the framework of chip-to-chip interconnections in systems consisting of several field-programmable gate arrays

The paper discusses a new approach to development of multichip systems based on Field-Programmable Gate Arrays (FPGA) implementing volume algorithms for spacecraft control. This approach takes into account requirements for resistance to special factors and specifics of the implemented algorithms. It describes the principle of dividing a single algorithm into functional units and principles of their interfacing. A technique is proposed for protecting chip-to-chip interconnections using error correcting codes taking into account the probability of errors occurring in the encoder. It summarizes the results of testing the math model of a radiation-resistant encoding method based on convolutional code, as well as tests of the implementation of the developed circuit in FPGA chips. It draws conclusions about future prospects for application of this technique taking into account the expanding range of available Russian-made FPGAs.