文章摘要
互相关技术在海底沉积物电阻率测量中的应用
Application of cross-correlation detection in submarine sediment resistivity measurement
  
DOI:
中文关键词: 海底沉积物  电阻率  互相关  微弱信号处理
英文关键词: submarine sediment  resistivity  cross-correlation  weak signal process
基金项目:国家“十二五”863计划海洋领域课题(2012AA091301)
作者单位
马斌1,罗柏文2,陈奇3,吴来杰1 1.中国地质大学 武汉机电学院,湖北 武汉 430074
2.湖南科技大学 先进矿山装备教育部工程研究中心,湖南 湘潭 411201
3.国土资源部 广州海洋地质调查局,广东 广州 510760 
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中文摘要:
      海底沉积物的电阻率测量技术广泛应用于海洋地质调查、海洋环境研究等领域,基于海底钻机的原位探测仪为平台,开发了一套电阻率测试系统,为精确处理电阻率探头输出的微弱电压信号,对互相关算法进行了理论推导和MATLAB仿真,并在实际电路中以互相关算法在DSP(TMS320F28069)的移植为核心设计了相关软硬件,大量的对比试验表明,互相关技术是一种有效的微弱信号处理方法,可提高海底沉积物电阻率测量的精度和抗干扰能力.
英文摘要:
      The technology of submarine sediment resistivity measurement is widely used in such as the marine geological survey, the marine environment research. A resistivity measurement system was developed in the platform of in-situ measurement which based on seafloor drilling machine. In order to precision manage the weak voltage signal which outputted by the resistivity probe, the cross-correlation algorithm theoretical was derivated and MATLAB simulation was carried out. Finally the software was transported in TMS320F28069 DSP processor and hardware was designed . A Mass of contrast experiment shows that the cross-correlation detection is an effective way to process weak signal. It can not only improve the submarine sediment resistivity instrument’s accurate, but also improve the anti-jamming ability.
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