On-orbit reconstruction method of satellite system based on information hiding

Abstract

Disclosed is a satellite system reconstruction method on an orbit based on information hiding. The satellite system reconstruction method on the orbit based on the information hiding is used to generate a configuration file according to user demands and download the configuration file onto an FFGA (field programmable gate array) of a processing unit on a satellite, and includes steps: 1) generating the configuration file according to the user demands; 2) performing transmission operation on reconstitution data, wherein a ground management center hides configuration file data in a data frame sent by a data link, and sends the configuration file data to a control unit on the satellite, and the control unit on the satellite completes data verification, extraction and storage; 3) performing reconstruction operation, wherein the configuration file stored in the control unit on the satellite is downloaded in the FPGA of the processing unit on the satellite according to reconstruction instruction start operation sent by the ground management center. The satellite system reconstruction method on the orbit based on the information hiding solves the problems that an existing satellite system can not be flexibly used for meeting new functional demands of a user, a remote metering channel is used in the reconstruction operation, and therefore the defects of being low in data transmission speed and poor in instantaneity are caused in the prior art by hiding the configuration file data in the data frame sent by a data link channel.

Description

technical field [0001] The invention relates to the technical field of satellite communication, in particular to an on-orbit reconfiguration method of a satellite system based on information hiding. Background technique [0002] The function design of the existing satellite processing system has been determined at the beginning, and the realization of its function depends on the configuration file loaded in the memory of the FPGA in the on-board system to complete, and the configuration file realizes the function of the satellite system. The configuration file has been solidified into the memory before the launch of the satellite, so when the user has a new function requirement, the satellite cannot realize the new function by changing its own program, and cannot meet the requirement. At the same time, the existing reconstruction method uses satellite remote control telemetry channel for data transmission, which has low transmission rate and poor real-time performance, and c...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a satellite system on-orbit reconstruction method based on information hiding. The method hides the configuration file data in the data frame sent by the data link channel, and solves the problem that the existing satellite system cannot be flexible. Applied to the user's new functional requirements and the use of telemetry channels for reconstruction operations resulting in low data transmission rates and poor real-time performance

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