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| Time-frequency Characteristic Analysis of Underwater Electric Field in Ocean Environment at Shallow Sea |
| Received:June 18, 2014 Revised:July 08, 2014 |
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| DOI：10. 7643 /issn. 1672-9242. 2014. 05. 012 |
| KeyWord:underwater electric field in ocean environment time-frequency characteristic energy distribution |
| Author | Institution |
| JIANG Li-jun |
Naval Agent's Room in Dalian Region, Dalian , China |
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| Abstract: |
| Objective To master the main energy source and attenuation law of underwater electric field in ocean environment. Methods The variation environmental electric field amplitude with time was studied in combination with the theories. The frequency spectral distribution at different frequency bands of the underwater environmental electric field was analyzed in detail. Finally, the proportions of the amplitude values at different frequency points in the whole frequency band of the underwater electric field in ocean environment were calculated. Results The results showed that the amplitude of the underwater electric field in ocean environment reduced with the decrease of the conductivity and the movement of the sea water. The energy was mainly concentrated in the 0. 01 ~ 1 Hz low frequency and power frequency range. The ocean environment electric field showed strong consistency within certain space range. Conclusion The experimental results showed a certain degree of agreement with the theoretical analysis results. |
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