计算物理 ›› 1997, Vol. 14 ›› Issue (3): 340-344.

• 论文 • 上一篇    下一篇

托卡马克实验数据的小波极大模压缩

徐文斌, 叶高英, 邓慧忱   

  1. 核工业西南物理研究院计算中心, 成都 610041
  • 收稿日期:1996-03-30 修回日期:1996-09-02 出版日期:1997-05-25 发布日期:1997-05-25

EXPERIMENTAL DATA COMPRESSION WITH THE LOCAL MAXIMA OF A WAVELET TRANSFORM

Xu Wenbin, Ye Gaoying, Deng Huichen   

  1. Southwestern Institute of Physics, P. O. Box 432, Chengdu 610041
  • Received:1996-03-30 Revised:1996-09-02 Online:1997-05-25 Published:1997-05-25

摘要: 为了便于快速地传送大量的实验数据,减少通信线路的占用时间;以及方便实验人员处理实验数据,我们采用小波极大模方法对HL-1M装置上的等离子体诊断数据进行了压缩。结果证明压缩12倍后的重建结果能与五点三次光滑后压缩两倍的数据比美,能保持原数据形态与特征,这就说明了该压缩方法适用于压缩托卡马克实验数据。

关键词: 小波变换, 极大模, 数据压缩

Abstract: For speeding up remote data transmission and saving storage, a local maxima of a wavelet transform is used to compress the experimental data of HL-1M tokamak. It is shown that the compression algorithm reduces the data size to an average factor of 12, and the reconstructed data is better than the data which compressed by using a method of five point smoothing and sampling in an alternate data in keeping main features of the original data.

Key words: Wavelet transform, local maxima, data compression

中图分类号: