Troubleshooting system and method of data transmission sub system based on two stages of check codes

A check code and sub-system technology, applied in the troubleshooting system and its troubleshooting field, to achieve the effect of less time and low cost

Active Publication Date: 2015-01-14
SHANGHAI SATELLITE ENG INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the current test method, it is difficult to judge the error code after a bit error occurs. In o

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  • Troubleshooting system and method of data transmission sub system based on two stages of check codes
  • Troubleshooting system and method of data transmission sub system based on two stages of check codes

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Embodiment Construction

[0012] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0013] Such as figure 1 As shown, the troubleshooting system of the digital transmission sub-system based on the two-level check code of the present invention includes a data processor, a solid-state memory, a modulator, a solid-state amplifier, and a ground receiving device. The solid-state memory and the modulator are all connected to the data processor. The solid-state amplifier is connected to the modulator, the ground receiving equipment is connected to the solid-state amplifier, and the data...

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Abstract

The invention provides a troubleshooting system and method of a data transmission sub system based on two stages of check codes. The troubleshooting system of the data transmission sub system based on the two stages of check codes comprises a data processor, a solid-state memory, a modulator, a solid-state amplifier and ground receiving equipment. The solid-state memory and the modulator are both connected with the data processor, the solid-state amplifier is connected with the modulator, and the ground receiving equipment is connected with the solid-state amplifier. The data processor comprises an AOS framing module, a channel coding module, the first stage of CRC check code and the second stage of CRC check code. By means of the troubleshooting system and method of the data transmission sub system based on the two stages of check codes, additional ground equipment is needless, the implementation mode is simple and easy, and thus error code occurring links can be positioned conveniently and rapidly.

Description

technical field [0001] The present invention relates to a troubleshooting system and a troubleshooting method thereof, in particular to a troubleshooting system and a troubleshooting method of a digital transmission subsystem based on two-level check codes. Background technique [0002] At present, in the system-level and whole-star tests of the digital transmission subsystem, there is no effective means to locate the fault after a bit error occurs. [0003] The data processing flow of the low-orbit satellite ground cable test stage is as follows: data source input data processor → AOS (Advanced orbiting system, advanced on-orbit system) framing → record to solid-state memory → playback to the data processor for scrambling and channel Encoding → output to modulator for modulation → output to solid-state amplifier for signal amplification → output to ground equipment for reverse operation. In the current test method, it is difficult to judge that the error occurred in one of...

Claims

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Application Information

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IPC IPC(8): H04L1/00
CPCH04L1/004
Inventor 俞凌筠张小锋朱少杰胡珍韩佳鑫
Owner SHANGHAI SATELLITE ENG INST
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