A method for on-orbit reconstruction of spaceborne FPGA software

Abstract

An on-orbit reconstruction method for on-board FPGA software, (1) generating and storing reconstructed difference data packets; (2) compressing the reconstructed difference data packets to generate compressed packets; (3) compressing the optimal compression parameters and the compressed packets Assemble the package and add decompression information to generate the reconstructed injection package; (4) The ground will sub-package the reconstructed injection package into the satellite according to the uplink characteristics of the aircraft, check it, and write it into the injection storage area, until All subcontracting is completed; (5) The onboard processor scans all the betting subcontracts in the betting storage area, identifies all wrong subcontracting and unposted subcontracting, and downloads the identification results Ground; (6) The ground re-annotates according to the recognition results until all the reconstruction and sub-packet verification pass; (7) The on-board processor decompresses the original BIT data and the decompressed data bitwise XOR, and restores the Reconstruct the original code and write it into the FPGA external memory, and finally reset the FPGA and reload the BIT file to complete the on-orbit reconstruction of the FPGA software.

Description

technical field [0001] The invention relates to a method for on-orbit reconstruction of spaceborne large-capacity FPGA software, which is used to implement on-orbit reconstruction of FPGA software of a space vehicle. Background technique [0002] During the in-orbit service of the spacecraft, if there is a problem with the onboard FPGA software during operation or when new functions need to be implemented, the software needs to be repaired or upgraded. At present, the main method of on-orbit reconstruction of on-board FPGA is to inject the modified FPGA program directly into the device from the ground, and then load the modified FPGA program through the on-orbit maintenance program. This method requires a large memory to store Uploading a file, and the transfer time is very long due to the large size of the injected file. There is a risk of failure during the uploading process. Once a transmission error occurs during the uploading process or the aircraft's energy supply is i...

AI Technical Summary

Problems solved by technology

[0003] The technology of the present invention solves the problem: overcomes the deficiency of existing FPGA on-orbit reconfiguration technology, and provides a method that can effectively perform on-orbit reconfiguration of on-board FPGA software. This method consumes less resources and has a simple algorithm, and is more suitable for resources affected by limited embedded system, and good portability, which effectively improves the reliability and maintainability of on-orbit aircraft

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