Theoretical Study on Tensor Controllable Source Electromagnetic Field Distribution Law
Tensor controllable source electromagnetic method was put forward long; however, since controllable source launching system satisfying tensor electrical impedance observation is quite complex and hard to manufacture, it was difficult to be applied. In 2010 Germany Metronix Company developed successfully the first controllable source magnetotelluric instrument that satisfied tensor electronic impedance observation, whose rotating dipole launcher could launch magnetic fields with different directions of polarization, different tensions and different frequencies. Now optimal electromagnetic field signals at all points within the testing area could be observed. That is why theoretical study was conducted on such launching device in this essay.