Obtaining the transmitter current waveform based on deconvolution
Yang Yan · Progress in geophysics · 2016
The transmitter current waveform of Time-Domain Airborne Transient Electromagnetic( AEM) system,due to heaton the ground,electrical power and other factors limit, large current waveform can not be measured directly under full power,aiming at this problem,made by measuring the ground slightly abnormal coil inducedcurrent,establishthe relationship of abnormal ground coil induced current and air-launched coil transmitter current,using deconvolution algorithm to extract the transmitter current waveform.The algorithm verified by simulation and ground experiments,contrast the reductive transmitter current and the actual transmitter current,the results show that the transfer function of device,the measurement accuracy of different observation positions have some influence on the reduction of the transmitted waveform,when the airlaunched and ground anomalies coil winding total center, the induced current is the largest,the error of the reduced transmitter current with the actual current waveform is the smallest.