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Satellite-bone data processing system based on advanced orbiting system (AOS)

A technology for processing systems and on-board data, applied in digital transmission systems, transmission systems, data exchange networks, etc., and can solve problems such as the inability to adapt to the dynamic changes of on-board data sources

Inactive Publication Date: 2013-01-30
NO 513 INST THE FIFTH INST OF CHINA AEROSPACE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the virtual channel scheduling strategy adopts a static periodic rotation strategy, and the transmission frame output of each virtual channel is isochronous, which cannot adapt to the dynamic changes of the data source on the star

Method used

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  • Satellite-bone data processing system based on advanced orbiting system (AOS)
  • Satellite-bone data processing system based on advanced orbiting system (AOS)
  • Satellite-bone data processing system based on advanced orbiting system (AOS)

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Embodiment Construction

[0032] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] like figure 1 As shown, the present invention is based on the AOS on-board data processing system, which processing system includes 1553B bus interface, 1394A bus interface, data source LVDS interface, solid storage LVDS interface, CPU control module, FPGA, clock unit and high-speed serial module; The FPGA includes four data buffers, a framing and formatting module, a virtual channel dynamic scheduling module, an RS channel coding module, a pseudo-randomization module and a frame synchronization module. The solid storage LVDS interface is a solid state memory, and its external output interface is an LVDS interface.

[0034] The connection relationship between the above devices is: 1553B bus interface and 1394A bus interface are respectively connected to the CPU control module; CPU control module, 1394A bus interface, data source LVDS ...

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Abstract

The invention provides a satellite-bone data processing system based on an advanced orbiting system (AOS). The system can dynamically process satellite-bone data, so that the satellite-bone data can be adapted to dynamic change of an on-satellite data source. The system comprises a 1553B bus interface, a 1394A bus interface, a data source low-voltage differential signaling (LVDS) interface, a persistent storage LVDS interface, a central processing unit (CPU) control module, a field programmable gate array (FPGA), a clock unit and a high-speed series module, wherein the FPGA comprises four data caches, a framing and formatting module, a virtual channel dynamic scheduling module, a Reed-Solomon (RS) channel encoding module, a pseudorandom module and a frame synchronization module. Priority levels and urgent degrees of various types of data are stored on the virtual channel dynamic scheduling module in advance; received data are dynamically scheduled according to the priority levels and the urgent degrees; and therefore, the data processing system can meet requirements of dynamic change of the on-satellite data sources.

Description

technical field [0001] The invention relates to a data processing system, in particular to an on-board data processing system based on an advanced on-orbit system (AOS), and belongs to the technical field of on-board data processing. Background technique [0002] In order to adapt to the development of space technology, the International Consultative Committee on Space Data Systems (CCSDS) proposed a data processing system with high flexibility—Advanced On-Orbit System (AOS) for the data transmission requirements of complex space missions. AOS combines payload data and spacecraft platform data into a unified data stream, serving the space-space or space-ground measurement and control communication and data management systems. AOS can handle the access of many users with different needs at the same time. The system can transmit various information such as voice, TV image, still image, experimental data, telemetry, remote control, etc., through a virtual channel to establish ...

Claims

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Application Information

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IPC IPC(8): H04L12/865H04L1/00H04B7/185H04L47/6275
Inventor 申景诗张长帅王凤阳邵飞
Owner NO 513 INST THE FIFTH INST OF CHINA AEROSPACE SCI & TECH