中國有色金屬學(xué)報(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 5 No. 2 June 1995 |
SQUARE WAVE COHERENT METHOD FOR EXTRACTING IP EFFECT
He Jishan; Wang Shaowu; Tang Jingtian
（Central South Univercity of Technology; Changsha; 410083）
Abstract:Using special appearance of EM and IP effects in measured dual-frequency wave form, a square wave coherent method to extract IP effect directly and simutaneously was proposed. The results of numerical calculation and experiments showed that EM effect can be eliminated well in field measurement. The instrument made on this method worked well in waterbath experiments
Key words: dual-frequency IP method square wave coherent method Fourier coherent methed EM effect.
