| 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 |
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| 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: |
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