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热带海洋学报 ›› 2015, Vol. 34 ›› Issue (4): 54-58.doi: 10.11978/j.issn.1009-5470.2015.04.007CSTR: 32234.14.j.issn.1009-5470.2015.04.007

• 海洋地球物理学 • 上一篇    下一篇

高频海底地震仪性能检测

郝小柱1, 2, 伍忠良1, 2, 王伟巍1, 2   

  1. 1. 国土资源部海底矿产资源重点实验室, 广东 广州 510075;
    2. 广州海洋地质调查局, 广东 广州 510760
  • 收稿日期:2014-10-20 出版日期:2015-08-10 发布日期:2015-08-21
  • 作者简介:郝小柱(1982~), 男, 湖北省宜城市人, 高级工程师, 硕士, 从事海洋地球物理勘探方法与数据采集的研究工作。E-mail: dinbuyi@hydz.cn
  • 基金资助:

    国家高技术研究发展计划项目(2013AA092501)

Performance test of high-frequency ocean bottom seismometer

HAO Xiao-zhu1, 2, WU Zhong-liang1, 2, WANG Wei-wei1, 2   

  1. 1. Key Laboratory of Marine Mineral Resources, Ministry of Land Resources, Guangzhou 510075, China;
    2. Guangzhou Marine Geological Survey, Guangzhou 510760, China
  • Received:2014-10-20 Online:2015-08-10 Published:2015-08-21

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被引次数

2

摘要：

海底地震仪(ocean bottom seismometer, OBS)采集数据的可靠性取决于地震仪的性能, 但目前国内还没有配套的OBS性能检测设备。OBS可控音频测试仪借鉴了拖缆地震采集系统的性能检测系统, 使用脉冲信号和固定频率的音频信号作为源信号, 并针对OBS的性能指标在出航前进行性能检测, 即波形一致性、时间一致性、主频偏差与频谱分析、信噪比、增益分析和脉冲与频谱分析, 来确定OBS的可靠性, 从而保证数据采集的质量, 为野外作业提供了技术保障。

关键词: 海底地震仪, 性能测试, 音频信号, 检测指标

Abstract:

Reliability of ocean bottom seismometer (OBS) data depends on the performance of OBS, but there is no OBS performance detection equipment in China currently. The OBS controllable audio test instrument refer to the performance testing system for towing seismic acquisition system, and uses pulse signal and fixed frequency audio signal as the source signal. OBS performance is tested in terms of performance index before sailing. These indexes include the waveform consistency, time consistency, frequency deviation, spectral analysis, signal-to-noise ratio, gain analysis and pulse spectral analysis. The OBS controllable audio test instrument can determine the reliability of OBS, ensure the high quality of data collected by OBS, and provides technical support for field operation.

Key words: OBS, performance testing, audio signal, testing indicator