Memory map-based mass data preprocessing method

Abstract

The invention belongs to a database reading and writing method for aerospace, and particularly relates to a memory map-based mass data preprocessing method. The method relates to a data table generation module, a mass data fast import module, a mass data fast preprocessing module and a mass data fast retrieval module, wherein the mass data fast import module comprises a memory map sub-module. The method has the advantages that a rational efficient read-write mode and a database structure are established for mass data preprocessing of a spacecraft, a data table with an identifier is generated for telemetry information each time according to a test state and an index is created to facilitate fast retrieval and reading of specific parameters in databases; the gigabit information of the spacecraft is classified and sequentially and quickly inserted into the corresponding databases according to subsystems, parameter names, parameter types and the like, and the insertion completion time frame is second.

Description

technical field [0001] The invention belongs to a database reading and writing method for aerospace, in particular to a method for preprocessing massive data based on memory mapping. Background technique [0002] With the continuous development of space technology, the functions and structures of spacecraft are becoming more and more complex, the sampling frequency is getting higher and higher, and the flight time is getting longer and longer, resulting in the exchange of information and monitoring information generated during the operation of the spacecraft. many. For information interpretation work, using traditional text storage and reading methods, it is becoming more and more difficult for interpreters to locate fault points in massive data, and the proportion of data preprocessing in the interpretation process is increasing, which seriously affects the efficiency of interpretation , and it is not conducive to the development of interpretation automation tools. Therefo...

AI Technical Summary

Problems solved by technology

[0003] Judging from the literature, domestic and foreign spacecraft use databases to manage data magnitudes of hundreds of megabytes, and there are no examples of design methods for spacecraft gigabytes of massive data preprocessing. Therefore, it is necessary to develop a memory-mapped The gigabit mass data preprocessing method with high reliability and suitable for spacecraft systems is of great significance and practical value

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