Research on Lateral Vibration and Vibration-induced Electromagnetic Noise of Underwater Electric Field Antenna

doi:10.3969/j.issn.1000-1093.2014.07.019

Abstract

Abstract: Lateral vibration is the dominating vibration source caused by seawater ripples for the underwater electric field antenna, and the lateral vibration-induced electromagnetic(EM) noise is dominant in EM noises for long wave communication，which has a significant influence on the receiving depth and quality of long wave communication. The lateral vibration model of towed antenna is established, and the response of lateral stochastic vibration is educed. The generating mechanism and characteristic of lateral vibration-induced EM noise are analyzed．Furthermore，the simulation and analytic results of EM noise are given．All the results indicate that the calculation of vibration-induced EM noise under the assumption of Bernoulli beam and the excitation of stochastic fluctuating stresses is feasible and exact, and the antenna configuration is optimized and the vibration-induced EM noise is decreased based on the results of lateral vibration-induced EM noise.

Key words: communication technology, long wave communication, towed antenna, lateral vibration, EM noise

CLC Number:

TN827

ZHU Si-hua，ZHU Xue-shan，LIN Hong-wen，HU Hao. Research on Lateral Vibration and Vibration-induced Electromagnetic Noise of Underwater Electric Field Antenna[J]. Acta Armamentarii, 2014, 35(7): 1060-1064.

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