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Method for improving storage efficiency of moonlet moonlet-borne solid-state memory

A technology of solid-state memory and storage efficiency, applied in the direction of instruments, input/output to record carrier, and input/output process of data processing, etc., can solve the problems of low storage efficiency of solid-state memory and waste of data storage resources, etc. The time of data, the effect of improving storage efficiency and improving efficiency

Active Publication Date: 2016-08-17
AEROSPACE DONGFANGHONG SATELLITE
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Problems solved by technology

If all the above data are recorded in the solid-state memory, the storage efficiency of the solid-state memory will be greatly reduced, and the limited data storage resources onboard will be wasted.

Method used

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  • Method for improving storage efficiency of moonlet moonlet-borne solid-state memory
  • Method for improving storage efficiency of moonlet moonlet-borne solid-state memory
  • Method for improving storage efficiency of moonlet moonlet-borne solid-state memory

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Embodiment 1

[0042] (1). The frame synchronous extraction is performed on the input AOS data frame. The specific implementation method is as follows: the input AOS data frame is converted into parallel and serial, and then the binary code " 0001101011001111111110000011101” is used for XOR operation, and then the result Value after the calculation is counted; in order to avoid false extraction of frame synchronization, it is required that the number of bits in the frame synchronization extraction interval of two consecutive frames is 1024 bits of the length of the AOS data frame; if Value>2, it is considered not AOS data frame is found; if Value≤2, it is considered that a frame of AOS data frame has been found. At this time, the counter FindCount+1 of the number of AOS data frames found in a row will be counted. If FindCount=5, it is considered that frame synchronization extraction has been completed , enter the synchronization lock state, disable the counter FindCount and keep the current v...

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Abstract

The invention relates to a method for improving the storage efficiency of a moonlet moonlet-borne solid-state memory. A new method is provided for solving the problem that a solid-state memory is low in storage efficiency. When the solid-state memory records data, frame synchronization is extracted to judge current AOS frame virtual channel identification, and if the current AOS frame virtual channel identification is a data filling frame, the current AOS frame virtual channel identification is not stored in the memory; if the current AOS frame virtual channel identification is an effective data frame, fixed data parts, such as a frame synchronization head, a version number, a spacecraft identifier, virtual channel identifier and channel coding check code parts not subjected to coding, in each frame are removed, and when data is read, AOS frame data is completely recovered according to label data made for an AOS frame. According to the method, only effective data in the AOS frame is recorded, and the storage efficiency of the solid-state memory is greatly improved.

Description

technical field [0001] The invention relates to a method for improving the storage efficiency of a small-satellite onboard solid-state memory, especially based on the fact that the small-satellite has high resolution, high write data rate of the on-board solid-state memory, and limited storage capacity. Background technique [0002] The resolution of small satellite payload data is getting higher and higher, the number of quantization bits is increasing, and the width is getting wider and wider, so that the amount of data output by the payload increases geometrically, which affects the storage capacity of the on-board solid-state memory. and storage efficiency put forward new requirements. [0003] The satellite sends a part of the payload data to the data processor together with another part of the payload data that does not need to be compressed after being compressed by the compression encoder. The data processor frames the two parts of the payload data according to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
CPCG06F3/0608G06F3/0662G06F3/0673
Inventor 刘志佳张敬一石雷郭琪李鹏飞马红军丁笑云蔺祥宇欧民辛保礼
Owner AEROSPACE DONGFANGHONG SATELLITE
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