FDIR (Fault Diagnosis, Isolation and Restoration) processing method for SpW (SpaceWire) network

Abstract

The invention discloses a FDIR (Fault Diagnosis, Isolation and Restoration) processing method for a SpW (SpaceWire) network. The method comprises the following steps: in a process of performing SpW protocol encapsulation at a network source end, finishing CCSDS AOS (Consultative Committee for Space Data Systems Advanced Orbiting System) protocol virtual channel processing of valid data; after a network host end receives a SpW-RVTP (SpaceWire-Remote Virtual-Channel Transfer Protocol) data packet transmitted by the network source end, performing protocol parsing, removing a SpW protocol format from the SpW-RVTP, extracting an AOS protocol VCDU (Virtual Channel Data Unit) frame from the SpW-RVTP data packet, adding 1ACFFC1D data to construct a CADU format frame, and transmitting the CADU format frame to a physical channel; and performing FDIR processing at the network host end on the basis of the SpW-RVTP data packet. According to the method, spacecraft fault diagnosis, isolation and restoration measures are set specific to the transmission characteristics of the SpW network, so that the SpW network transmission reliability is enhanced, and the satellite-ground data transmission fault locating efficiency is increased.

Description

technical field [0001] The present invention relates to the technical field of SpW network fault diagnosis, isolation and processing, and in particular relates to a SpW network FDIR processing method. Background technique [0002] With the advancement of chip integration and SOC technology, satellite remote sensing technology has been rapidly developed in terms of theory, technology and application. Developing in the direction of multi-resolution and multi-remote sensing platforms, its spatial resolution, time resolution, and spectral resolution are generally improved, and the data interaction on the satellite is becoming more and more frequent, and the data interaction throughput is increasing day by day. These factors determine that the data system will gradually develop into a high-speed data network, which is manifested in: multiple data transmission channels, large amount of transmitted data, high code rate, high real-time and high reliability requirements for data tran...

AI Technical Summary

Problems solved by technology

According to the basic SpW protocol, the correctness of protocol packet transmission can only be guaranteed through the physical layer. When multi-channel data is transmitted, it is difficult to distinguish the detailed fault type of the protocol packet at the network sink, especially when the physical layer is abnormal. Indicates the protocol packet loss of a certain channel

[0004] At present, there is no description or report of the similar technology of the present invention, and no similar data at home and abroad have been collected yet.

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