基于電流線等效的潛艇磁場(chǎng)估算與仿真
doi: 10.11999/JEIT140063
基金項(xiàng)目:
國(guó)家自然科學(xué)基金(51109215)和國(guó)家部級(jí)基金資助課題
Estimation and Simulation Analysis of the Submarine Magnetic Field Based on Current-line Mode
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摘要: 根據(jù)潛艇水下腐蝕相關(guān)電磁信號(hào)的產(chǎn)生機(jī)理，該文提出可采用由電偶極子首尾相接而成的電流線對(duì)其進(jìn)行模擬。分別采用邊界元建模及電流線建模方法對(duì)潛艇模型的水下靜態(tài)電場(chǎng)進(jìn)行計(jì)算，對(duì)比分析結(jié)果表明，將電流線作為對(duì)潛艇水下腐蝕相關(guān)靜態(tài)電磁信號(hào)進(jìn)行估算的數(shù)學(xué)模型是可行的。在此基礎(chǔ)上，結(jié)合分層導(dǎo)電媒質(zhì)中水平直流電偶極子的磁場(chǎng)表達(dá)式，對(duì)潛艇腐蝕相關(guān)靜態(tài)磁場(chǎng)在全空間中的分布特征進(jìn)行了仿真分析。結(jié)果表明，空氣中潛艇腐蝕相關(guān)靜態(tài)磁場(chǎng)近場(chǎng)量值可測(cè)，分布特征明顯，可用于航空探潛；海水中潛艇腐蝕相關(guān)靜態(tài)磁場(chǎng)遠(yuǎn)場(chǎng)按距離的平方反比衰減，可用于消磁潛艇的遠(yuǎn)程探測(cè)。分析所得典型結(jié)論為進(jìn)一步的應(yīng)用研究奠定了基礎(chǔ)。
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關(guān)鍵詞:
- 腐蝕相關(guān)靜態(tài)磁場(chǎng) /
- 兵器科學(xué)與技術(shù) /
- 腐蝕相關(guān)靜態(tài)電場(chǎng) /
- 水平直流電流線 /
- 估算模型
Abstract: According to the generation mechanism of the underwater corrosion-relative-electromagnetic field of submarine, a current-line which is regarded as end-to-end electric dipole is proposed to simulate the field distribution. Firstly, the underwater static electric field of a submarine model is calculated respectively by the boundary-element method and the current-line method, and the contrastive analysis of the calculation results shows it is feasible that the current-line mode is selected to estimate the underwater corrosion-relative- electromagnetic field of submarine. Then, based on the magnetic field expressions of the horizontal static electric dipole in layered-conductive media, the static corrosion-relative-magnetic field distribution of the submarine in all the space is simulated and analyzed. The simulation results show that, the near-field of the magnetic field in air is suitable to be as a new target of the aerial submarine hunting because of its measurable magnitude and obvious distribution characteristic, as well as the far-field is suitable to be as signal source for remote detection or position fixing of the degaussing submarine because it degenerates with the inverse square of the distance. The typical research results lay the foundation for the further application research. -
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