Lin Chao, Zhou Xuejun, Zhou Yuanyuan. Research on the features of signal attenuation in submarine cable detection[J]. 2011,(5):22-24. DOI: 10.13756/j.gtxyj.2011.05.011.
Submarine cable faults are located mainly by using the electric field method and the magnetic field method.On the basis of the transmission theory
the formula for signal attenuation in the submarine cable conductors are deduced when the two methods are used and the signal attenuation features analyzed.Numerical simulation results show that when the fault point is 1 000 km away from the shore end
the attenuation in certain type of cable is over 95% when the magnetic field method is used
but when the electric field method is used
it is less than 8%.That means that in respect of attenuation resistance
the latter is much superior to the former.
关键词
海底光缆故障定位电场法磁场法信号衰减
Keywords
submarine cablefault locationthe electric field methodthe magnetic field methodsignal attenuation