Inversion of Equivalent Ground Conductivity Based on Artificial Fish Swarm Algorithm

The measured inversion method is the fundamental method to obtain the equivalent ground conductivity. This method uses the measured results of the electric wave propagation field strength and delay, combined with the theoretical prediction method of electric wave propagation, to invert the ground conductivity along the propagation path. In this article, the integral equation method was selected as the forward algorithm, and the mean square error between the theoretical prediction results of the propagation delay correction and the measured results was used as the optimization goal. The artificial fish swarm algorithm was chosen as the inversion algorithm, and the Kriging interpolation was used to optimize the inversion rate. Finally, the feasibility of this inversion method and the reliability of the inverted conductivity were verified through simulation experiments in some test areas.