Abstract:

To make a reconfigurable on-board computer more suitable for small satellite application, this paper  modifies its traditional architecture and brings forward a field programmable gate array (FPGA) resource dynamic manage method which simulates stem cells in organism. Then based on dynamic partial reconfiguration technology, a new architecture of reconfigurable on-board computer is put forward. It not only avoids the competition of hardware circuit units among the task processes, but also simplifies the on-orbit hardware update process. Besides it enhances the reconfigurable onboard computer’s fault tolerant capability in system level. Experiment and comparison results show that it has the advantages traditional on-board computer (386-EX) and ordinary reconfigurable on-board computer in multitask which needs huge amount of computations.