计算机应用 ›› 2010, Vol. 30 ›› Issue (06): 1698-1700.

• 典型应用 • 上一篇    下一篇

基于矩阵的混合型数字匹配滤波器的研究

郑津1,陈利学2,梅大成2   

  1. 1. 西南石油大学
    2.
  • 收稿日期:2009-12-23 修回日期:2010-02-09 发布日期:2010-06-01 出版日期:2010-06-01
  • 通讯作者: 郑津
  • 基金资助:
    四川省教育厅重点项目;四川省科技厅应用技术研究与开发重点项目

Digital matching filter with compound architecture based on matrix

  • Received:2009-12-23 Revised:2010-02-09 Online:2010-06-01 Published:2010-06-01

摘要: 针对测井信号扩频传输的实际需求,在FPGA芯片上设计并实现了一种改进的混合型数字匹配滤波器。匹配滤波相干过程采用递归化矩阵运算的方式进行,并将滤波器中多路乘加器计算求值的结构改用查表寻值形式,以同时满足井场对简化设备结构与保证工作速率的要求。测试结果显示,该结构数字匹配滤波器的处理效果能满足设计要求。

关键词: 扩频通信, 测井信号传输, 数字匹配滤波器, 现场可编程门阵列, 递归化矩阵运算

Abstract: Under discussion of the background of logging signal transmission based on discrete Sequence-Spread Spectrum (DS-SS) technology, the research and design of a compound architecture Digital Matching Filter (DMF), configured on FPGA, was described in detail. In this filter, the matching filtering progress was made by recursive matrix operations, and common multi-multiplier adder frame was replaced by a way of look-up table value finding, to ensure the well site requirements of simple instrument structure and work efficiency. The testing results show that the processing effects done by the filter meets the design requirements.

Key words: Direct Sequence-Spread Spectrum (DS-SS), Logging Signal Transmission, Digital Matching Filter (DMF), Field-Programmable Gate Array (FPGA), Recursive Matrix Operations