海洋环境电场是船舶电场检测的背景场和干扰场。研究和分析海洋环境电场频域、空间相关等特性，可为海洋中船舶电场信号特征有效提取提供支撑。本文对中国北黄海某海域海洋环境电场观测数据进行分析，通过关联场源因素的分频段滤波得到4个典型频段的电场数据。对各频段的时域、频域、极化特性进行分析，对同一频段不同测量体的数据相关性进行研究，分析结果表明：0.1~1 Hz，5~10 Hz频段的环境电场相关性较好，DC–0.1 Hz，1~5 Hz频段环境电场相关性相对较差。空间不同位置电场存在一定的相位偏移，通过相位补偿可提高环境电场信号的一致性，可为环境电场抑制提供依据。
The electric field of marine environment is the background field and interference field of ship electric field detection. The study and analysis of the frequency and spatial correlation characteristics of the electric field in the marine environment can provide support for the effective extraction of the electric field signal characteristics of ships in the ocean. This paper analyzes the observation data of the marine environment in a certain area of the North Yellow Sea of china, the electric field data of four typical frequency bands are obtained by the frequency division filtering associated with the field source factors. The time-domain and polarization characteristics of each frequency band are analyzed, and the data correlation of different measurement objects in the same frequency band is studied. The analysis results show that: 0.1–1 Hz、5–10 Hz bands has a good correlation with the environment electric field; DC–0.1 Hz、1–5 Hz bands has a bad correlation with the environment electric field; there is a certain phase shift in the electric field of different positions in space, the consistency of environmental electric field signal can be improved by phase compensation, it can provide a basis for the suppression of environmental electric field.
2020,42(8): 162-166 收稿日期：2020-04-17
DOI：10.3404/j.issn.1672-7649.2020.08.030
分类号：TN15
作者简介：陈醒(1996-),男,硕士研究生,研究方向为舰船和海洋环境水下电磁场特性分析
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