A method for on-orbit maintenance and upgrade of spaceborne software

Abstract

The invention relates to a satellite-borne software in-orbit maintaining and upgrading method. Satellite-borne software is divided into basic applications and applications; the basic applications are stored in a PROM (Programmable Read Only Memory); the applications are stored in a read-write non-volatile storage medium such as an EEPROM (Electrically Erasable Programmable Read-Only Memory) or an FLASH and the like; a storage logic of the applications comprises an original software storage region, an upgraded software storage region and a module software top inputting region; all the three regions comprise checking information; and in an initial state, storage contents in both the original software storage region and the upgraded software storage region are original applications of the satellite-borne software and the module software top inputting region is empty.. By ground command control and data top inputting, three requirements of the satellite-borne software on integral software upgradation, software module replacement or parameter modification and increase of software modules can be supported and satellite-borne software in-orbit maintaining and upgrading efficiency is improved.

Description

technical field [0001] The invention relates to an on-orbit processing method of satellite software. Background technique [0002] The high reliability and long life of the satellite put forward high requirements for the on-orbit maintenance and upgrade of the on-board software. The main reasons for on-orbit maintenance and upgrade of spaceborne software include: 1) Correction of original software design defects; 2) When there are defects or failures in hardware design, realize software on-orbit reconstruction or change the use strategy; 3) Adapt to the application Changes in requirements; 4) On-orbit software development. Currently, on-orbit software maintenance and upgrades are implemented through satellite-ground remote control to modify the original software onboard. [0003] According to the reasons for on-orbit maintenance and upgrades and the convenience of on-orbit maintenance, the on-orbit maintenance of spaceborne software generally has the following three requir...

AI Technical Summary

Problems solved by technology

At present, most spaceborne software implements on-orbit maintenance by reserving hook functions and adding certain modules. There is no software on-orbit maintenance method that can meet the above three requirements at the same time in the existing literature.

[0004] In addition, most of the spaceborne software currently uses PROM or EEPROM as the storage medium for the software, and the PROM is used to store the software. Since the software on the PROM cannot be changed, it is difficult to implement the overall software upgrade and replace some modules, and the application program is generally large in scale. Stored in PROM, higher cost

Use EEPROM as the storage medium of the software. Since EEPROM is a non-volatile storage medium, it does not solve the problem of single event flipping in space applications, and its security is not as high as that of PROM.

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