A cross-backup system for telemetry and data transmission data channels used in spaceflight

Abstract

The invention discloses a system for cross backup of telemetering and digital transmission data channels for aerospace applications. The system comprises an integrated electronic subsystem, a spaceborne measurement control transponder, a digital transmission subsystem and spaceborne data equipment which are locally arranged on a satellite platform, wherein data transmission channels exist between the spaceborne data equipment and the integrated electronic sub-system and the digital transmission subsystem, and a data transmission channel is established between the integrated electronic sub-system and the digital transmission subsystem through the spaceborne data equipment to achieve the interconnection and multiplexing between a telemetering data download channel and a digital transmission data download channel; the spaceborne data equipment achieves the exchange of the telemetering / remote control data through a measurement control channel and the integrated electronic subsystem, unidirectionally transmits the large-capacity test data to the digital transmission subsystem at high speed through an LVDS data interface, and also achieves a two-way data connection through an RS-422 data interface and the digital transmission subsystem. According to the system disclosed by the invention, the advantages of the telemetering channel and the digital transmission channel are fully combined, the advantage complementation and cross backup of the telemetering channel and the digital transmission channel can be achieved, and the real-time performance and security of the data can be increased.

Description

technical field [0001] The invention belongs to the field of aerospace technology, and in particular relates to a cross-backup system for telemetry data channels and data transmission data channels used in aerospace. Background technique [0002] At present, spacecraft generally use integrated electronic subsystems to realize internal information sharing and comprehensive utilization, and realize wireless communication through space-borne telemetry and remote control equipment and ground measurement and control equipment. This type of communication method is mature, reliable, and highly secure, but its data communication bandwidth is limited, and the data uplink or downlink rate is generally at the Kbps level. Moreover, there are many types of spaceborne data equipment on large spacecraft, and all telemetry data must be submitted to the integrated electronic subsystem, which will be aggregated and framed for download. Limited by the low data download rate of the telemetry c...

AI Technical Summary

Problems solved by technology

[0005] In view of the current spacecraft telemetry data download bandwidth is very limited, the data download cycle is long, the real-time effect is poor, and the problem of insufficient resource utilization caused by the isolation design of the data transmission and telemetry channels in the current spacecraft design

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