On-orbit maintenance method of satellite-borne embedded software

Abstract

The invention relates to an on-orbit maintenance method of satellite-borne embedded software for carrying out on-orbit maintenance on embedded software on a spacecraft through an increment uploading manner. The method comprises the following steps: (1) generation of increment uploading data: after determining that the on-orbit maintenance is carried out to the satellite-borne software, encoding and linking the updated satellite-borne embedded software to generate a binary file, comparing the updated binary file with the binary file corresponding to a program running on the orbit, and generating an increment file; (2) uplink loading of the increment uploading data: loading the increment file sub-package from the ground into a satellite-borne storage area, receiving a pack of uploading pack, and extracting the effective data from the uploading pack and writing the effective data into a preset increment file storage area until all the uploading packs are received; and (3) recombination running of increment uploading data: carrying out comparing and recombination on the uploaded increment file with the binary file primarily stored in the program storage, generating a new program, loading the new grogram into a memory, executing the new program, and finishing the on-orbit maintenance of the embedded software.

Description

technical field [0001] The invention relates to a method for on-orbit maintenance of embedded software on a space vehicle, which is used for on-orbit maintenance of embedded software on a space vehicle. Background technique [0002] When the on-board embedded software has problems during the flight or needs to add new functions, it is necessary to carry out fault repair or function upgrade of the software. At present, for the on-orbit maintenance of spaceborne software, the main domestic method is to inject the modified software directly from the ground into the embedded system, and then start the modified embedded software through the on-orbit maintenance program. The file is large, the transmission time is long, and a large memory is required to store the uploaded file, and there is a high risk. Once the uploading process fails, it may cause the entire system to fail. Moreover, most of the current on-orbit maintenance methods can only perform on-orbit maintenance on parti...

AI Technical Summary

Problems solved by technology

At present, for the on-orbit maintenance of spaceborne software, the main domestic method is to inject the modified software directly from the ground into the embedded system, and then start the modified embedded software through the on-orbit maintenance program. The file is large, the transmission time is long, and a large memory is required to store the uploaded file, and there is a large risk. Once the uploading process fails, it may cause the entire system to fail

Moreover, most of the current on-orbit maintenance methods can only perform on-orbit maintenance on partial functions of the software.

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