Reconfigurable single board pico satellite system

Abstract

The invention provides a reconfigurable single board pico satellite system. The system relates to the field of spacecraft design and development. The system is based on a printed circuit board satellite structure, a function module required for space missions of a pico satellite is integrated on a single board, logic and control are all implemented by using FPGA, meanwhile an FPGA-based single board satellite is developed by using IP cores of processors, and the fault tolerance of the processor can also be improved through a software secondary development mode; according to the system, a bus controller is connected with various modules through scheduling, the control of a computer system to each subsystem is achieved, the system has the advantages of being simple in structure, high n integration, small in size and low in power consumption and cost, the FPGA is used for achieving the condition that the IP cores of the processors of different architectures are provided by different manufacturers to achieve the reconfigurable properties of the processors, and an anti-radiation technology is used for secondary development of the IP cores of the processors to improve the fault toleranceof the processors; according to a pico satellite sensor and a measurement function, the FPGA is used for completing hardware implementation of different types of algorithms.

Description

technical field [0001] The invention relates to the field of spacecraft design and development, in particular to a pico-satellite system. Background technique [0002] Picosatellites usually refer to tiny satellites with a mass of less than 1 kilogram and special functional tasks. At present, the mainstream technology for pico-satellite design is cube-sat technology. CubeSat technology is used to provide the most basic and necessary design outline and guidance for different developers, and clearly defines the size of pico-satellites. Single-board satellite is also a kind of pico-satellite. In order to further improve integration, reduce power consumption and cost, Barnhart D J, Vladimirova T, Baker A M, et al.A low-cost femtosatellite to enable distributed space missions[J].Acta Astronautica ,2009,64(11–12):1123-1143. Describes a design of a printed circuit satellite, which integrates the basic functional modules required by the satellite on a 10cm×10cm PCB board to achiev...

AI Technical Summary

Problems solved by technology

[0003] However, the printed circuit satellite is an integrated electronic system based on MCU, which cannot be reconfigured and is not conducive to the design of anti-radiation reinforcement. Generally, the multi-mode redundant system structure is used, which increases the cost of original components, and also increases the power consumption and area of ​​the system.

In addition, this design cannot be well adapted to the transplantation of other processors. If the processing module is replaced, the overall circuit needs to be redesigned, which increases the design cost

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