Transmit Current Overshoot Suppression Strategy Based on HTEM System

Helicopter-borne Transient Electromagnetic Method (HTEM) is a Transient detection Method based on helicopter. In order to solve the problem of current overshoot in the pulse transmitting circuit of HTEM system, a new type of current overshoot elimination circuit is designed on the basis of using parallel acceleration resistance to eliminate current overshoot. Firstly, the cause of current overshoot is analyzed briefly, and then the working principle and analysis calculation of the new circuit are described. Secondly, the circuit mode is analyzed, and then the detailed circuit simulation parameters and simulation results are given, the feasibility of the circuit is verified by simulation and experiment, which can effectively reduce the time of current pipe section, reduce the blind spot of exploration, and increase the reliability of signal acquisition data of receiving system.