文章摘要
范敏毅,惠俊英,艾宇慧.m伪随机序列在声相关计程仪中的应用研究[J].,2000,19(2):14-18
m伪随机序列在声相关计程仪中的应用研究
Application of m pseudo-random serial to an acoustic correlation log
  
中文摘要:
      本文通过建立声相关计程仪(Acoustic  Correlation Log)的海底混响回波模型,将脉冲信号 调制在伪随机序列中作为发射信号,对在低航速下的声相关测速性能进行了计算机仿真研究.仿真 结果表明:在低航速下,伪随机序列能使脉冲信号的测速性能得到明显的改善;调相伪随机序列在航 速检测的正确率和精度上优于调幅伪随机序列;调幅伪随机序列在抗噪声上有其独特的效果.
英文摘要:
      in this paper, performance of an acoustic correlation log has been simulated based on the model of reverberation from sea bottom, using m pseudo-random serial to modulate CW pulse signal. According to the results of the simulation, under the low ship’s velocity, m pseudo-random serial can obviously improve CW pulse signal’s performance of velocity estimation. The m pseudo-random serial of phase modulation is superior to that of amplitude modulation in the accuracy of estimating ship’s velocity. The m pseudo-random serial of amplitude modulation has beneficial anti-noise effect.
DOI:10.11684/j.issn.1000-310X.2000.02.004
中文关键词: 声相关计程仪  伪随机序列  改善测速性能  抗噪
英文关键词: Acoustic correlation log  Pseudo-random serial  Improving performance of estimating ship’s velocity  anti-noise
基金项目:
作者单位
范敏毅 哈尔滨工程大学!哈尔滨150001 
惠俊英 哈尔滨工程大学!哈尔滨150001 
艾宇慧 哈尔滨工程大学!哈尔滨150001 
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