Analyzing Noise Sources of MT Data and Minimizing Measurement Noise
Hu Jia · Journal of Jianghan Petroleum Institute · 1999
Based on the some field acquisition experiences of MT data in the past many years, noise sources affecting real datum are discussed and the influence of industrial alternating current on measured MT data is analyzed in detail Some measures to suppress noises are put forward First, some man made and device derived noises are minimized Secondly, for the main disturbing source of industrial alternating current,moving sites, rotating layout direction of electric and magnetic lines, electromagnetic masking,cross type symmetric arrangement of electrodes, remote reference or cross reference measuring and Robust processing method to suppress noises are adapted As a result,signal to noise ratio is increased substantially and the quality of acquiring observed MT data is improved to strengthen the application of MT exploration