Virtual channel based SpaceWire network transmission and processing

A virtual channel and network transmission technology, which is applied in the field of SpaceWire network transmission, can solve problems such as not yet collected data, no explanation or report found, and achieve the effect of optimizing the data processing process, optimizing the data processing link, and reducing system storage

Inactive Publication Date: 2013-01-02
SHANGHAI SATELLITE ENG INST
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[0003] At present, there is no description or report of the similar technology o...

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  • Virtual channel based SpaceWire network transmission and processing
  • Virtual channel based SpaceWire network transmission and processing
  • Virtual channel based SpaceWire network transmission and processing

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Embodiment Construction

[0013] Embodiments of the present invention are described in detail below, and the present embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are provided, but the protection scope of the present invention is not limited to the following embodiments.

[0014] According to the provisions of the ECSS-E-50-12A protocol standard on SpaceWire bus links, nodes, routers and networks, its data packet layer protocol inherits the data packaging protocol defined by IEEE 1355-1995, and specifies the data from the source end to the sink end of the bus. The packaging format, as shown in Table 1 below, has a data packet structure consisting of a target address, data content, and an end-of-packet flag. Among them, the destination address is determined according to the SpaceWire network structure and transmission path conditions; the packet end mark is EOP or EEP, which is used to indicate that ...

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Abstract

The invention relates to a method for transmitting and processing high-speed data of a satellite and discloses a virtual channel based SpaceWire network transmission and processing system structure of the satellite. The method comprises packaging of satellite high-speed load data science source data, preprocessing of virtual channels, SpaceWire protocol format packaging, Consultative Committee for Space Data System (CCSDS) bit-stream service processing, packaging of physical transmission frames and the like. Data format analyses are conducted through building of a hardware test platform so as to finish storage and inversion of load data packages. By the aid of the method, according to processing and transmission characteristics of satellite borne high-speed data, data processing procedures are optimized, and the SpaceWire bus network transmission efficiency is improved.

Description

technical field [0001] The invention relates to a SpaceWire network transmission method, which applies the virtual channel technology of the CCSDS AOS protocol bit stream service to the SpaceWire network transmission and 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. With the development of multi-resolution and multi-remote sensing platforms, the spatial resolution, time resolution and spectral resolution are generally improved. These factors determine the characteristics of the spaceborne data transmission system, which are specifically manifested in: multiple remote sensing data transmission channels, large amount of one-way transmission data, high code rate, and high requirements for real-time and reliability of data transmission. The CCSDS AOS protocol and the SpaceWire bus protocol standard provide...

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Application Information

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IPC IPC(8): H04B7/185H04L29/06
Inventor 王震党建成刘波刘辉
Owner SHANGHAI SATELLITE ENG INST
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