Satellite-borne high-speed file management system

Abstract

The invention discloses a satellite-borne high-speed file management system which is small in occupied space and high in processing speed. The satellite-borne high-speed file management system comprises a main control panel and a memory board. The main control panel comprises a memory control module and a satellite-borne processor. File data are stored in the memory board. File information is stored in nonvolatile memory space of the main control panel. Indexes of the file information are stored in a satellite-borne processor internal memory. The file information comprises a file system parameter zone, an attribute zone and an FAT zone. Attribute tables of the file data are stored in the attribute zone. Piece logic addresses of the memory board are stored in the FAT zone. Whether a piece is occupied or not is explained through the corresponding address which is capable of assisting in explaining the address of the next piece. Orders of a satellite platform are received and analyzed by the satellite-borne processor, the file information of a required operation file is searched for according to the indexes, and file operation is achieved by the memory control module according to the file information. The satellite-borne processor is further used for maintaining the attribute zone and the FAT zone.

Description

technical field [0001] The invention belongs to the technical field of on-board file management, and in particular relates to an on-board high-speed file management system, which can be applied to the internal file management of on-board high-speed and large-capacity data storage devices. Background technique [0002] At present, the on-board high-speed data storage read and write rate has reached the Gbps level, the capacity has reached the Tb level, and the flight time is long, and there are many types of stored data. However, users have different real-time requirements for stored data, and satellite downlink channel bandwidth is also limited. Therefore, selective requirements are put forward for downlink data, and it is required to implement selective, user-specified playback and downlink in the management of stored data. At the same time, due to the limited processing capacity of the on-board processor, all high-speed stored data cannot be processed by it, and the stored...

AI Technical Summary

Problems solved by technology

At the same time, due to the limited processing capacity of the on-board processor, all high-speed stored data cannot be processed by it, and the stored data cannot be managed according to the common file system on the ground. Therefore, there is an urgent need for a file system that can store high-speed data according to user needs. managed file system

[0003] The operating system of the on-board processor is mainly an embedded operating system. However, several mainstream file systems currently used by the embedded operating system need to process the stored data during storage: specify the storage location, size, etc., and the on-board embedded system cannot Complete high-speed data up to several Gbps, so mainstream file systems cannot be used, and a file management system with a new architecture and new ideas must be developed

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