摘要
针对海洋资源勘探受限于采集技术和环境的限制,以及OBC(Ocean Bottom Cable)记录通常含有大量随机噪声,对有效反射信息的辨识带来不利影响,提出了基于序列能量分布的平稳性检验方法,并利用多椎体法对OBC随机噪声的功率谱特性和平稳性进行了分析研究。使用南海某地采集的OBC实际噪声资料作为分析数据集。研究结果表明OBC随机噪声是一种色噪声序列和弱非平稳时间序列,噪声能量主要集中于低频部分。同时结合海洋勘探环境特点,论证了结论合理性,这对OBC随机噪声特性的基础研究具有一定的实际意义和应用前景。
OBC(Ocean Bottom Cable) records are often limited by the limitations of data collection techniques and the environment, leading to a large amount of random noise that negatively impacts the identification of effective reflection information. Suppressing random noise requires accurate analysis of noise characteristics, therefore the multichannel method and a stability test method based on the energy distribution of the sequence are used to analyze the power spectral characteristics and stability of OBC random noise. Real noise data collected in a certain location in the South China Sea is used as the analysis dataset. The results show that OBC random noise is a colored noise sequence with noise energy mainly concentrated in the low-frequency part. The OBC noise is a weak non-stationary time sequence, and the conclusion is reasonable by combining the characteristics of the ocean exploration environment. This study has a certain practical significance and application prospects for the basic research on OBC random noise characteristics.
作者
杨文博
盖永浩
钟铁
董新桐
陈冠毅
张文祥
邓聪
YANG Wenbo;GAI Yonghao;ZHONG Tie;DONG Xintong;CHEN Guanyi;ZHANG Wenxiang;DENG Cong(Zhanjiang Branch,China National Offshore Oil Corporation Company Limited,Zhanjiang 524057,China;Key Laboratory of Modern Power System Simulation and Control and Renewable Energy Technology Ministry of Education,Northeast Electric Power University,Jilin 132012,China;Department of Communication Engineering,Northeast Electric Power University,Jilin 132012,China;College of Instrumentation and Electrical Engineering,Jilin University,Changchun 130026,China;Southern Marine Science and Engineering Guangdong Laboratory(Zhanjiang),Zhanjiang 524000,China)
出处
《吉林大学学报（信息科学版）》
CAS
2023年第2期236-241,共6页
Journal of Jilin University（Information Science Edition）
基金
国家自然科学基金青年基金资助项目(42204114)
“十四五”重大科技基金资助项目(KJGG2022-0304)。
关键词
海底电缆(OBC)
随机噪声
平稳性
功率谱特性
能量分布
ocean bottom cable(OBC)
random noise
stationarity
power spectrum characteristic
energy distribution
