A device and method for online start-up of two out of three satellite services

Abstract

The invention discloses an online three-out two start-up device and method for a satellite star service system. The method mainly includes: the star service system is connected to a start-up memory A to start; at the same time, the three-out two module reads the three-out two memory in units of blocks Write the three pieces of data into the cache after the three start-up file data in the cache, and the two-out-of-three module reads the three pieces of start-up data in the cache bit by bit, and then performs two-out of three operations to obtain the correct data of the bit, and writes the data of the bit Back to the cache for repair, the two-out-of-three module writes the correct startup data in the cache into the startup memory B in units of blocks, and at the same time repairs the original data in the two-out of three memory. At this time, the star service system can be connected to the boot memory B for online booting. The invention ensures the mutual independence of the start-up process of the satellite star service system and the two-out-of-three process, ensures the reliability of two out of three data each time, provides a means for the online start-up of the satellite star service system, and has important scientific significance and application value.

Description

technical field [0001] The invention relates to an on-line two-out-of-three starting device and method for a satellite mission system, belonging to the field of satellite mission systems. Background technique [0002] At present, most of the satellite star service systems use the method of starting based on the two out of three process. The two out of three process means that the selection of each start data requires any two or more of the three original data to meet the same conditions. The start data needs Perform two out of three operations and finally write into the star system to complete the startup. This method avoids the situation that the high-speed particles in space overturn the data in the startup memory, causing the star system to fail to read the correct startup data and thus fail to complete the startup normally, and improves the on-orbit reliability of the star mission. However, the traditional star system based on the two-out-of-three process adopts the two...

AI Technical Summary

Problems solved by technology

However, the traditional star system based on the two-out-of-three process adopts the two-out-of-three process and the start-up process sequentially, that is, the out-of-three process cannot be started normally until the out-of-three process is completed, so it is impossible to realize the two out of three process and the start-up process at the same time In other words, the online start-up of the satellite system and the restoration of the original stored data cannot be realized

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