摘要:
In order to master the magnetic field distribution of submarines in the air completely and exactly and study the magnetic stealthy performance of submarine,a mathematic model of submarine magnetic field extrapolation is built based on the boundary element method(BEM).An experiment is designed to measure three components of magnetic field on the envelope surface surrounding a model *** data in different heights above the model submarine are obtained by use of tri-axial *** results show that this extrapolation model has good stabilities and high accuracies compared the measured data with the extrapolated ***,the model can reflect the submarine magnetic field distribution in the air exactly,and is valuable in practical engineering.
摘要:
This part of IEC 61000 covers testing and measuring techniques for electric and electronic equipment (apparatus and systems) in its electromagnetic *** object of this part is to give applicability assistance to the technical committees of IEC or other bodies, users and manufacturers of electrical and electronic equipment on EMC standards within the IEC 61000-4 series on testing and measurement techniques and toprovide general recommendations concerning the choice of relevant tests.