<p>An EM receiver instrument suitable for making underwater electric field measurements. The EM receiver comprises a dipole antenna; an AM modulator for applying modulation to a signal detected by the antenna; a fiber-optic voltage sensor and an application of AM demodulator for applying demodulation to the signal. The fiber-optic sensor may be an interferometric voltage sensor or a phase sensitive voltage sensor.</p>
申请公布号
EP2591382(A1)
申请公布日期
2013.05.15
申请号
EP20110748594
申请日期
2011.07.07
申请人
ELECTROMAGNETIC GEOSERVICES ASA
发明人
ELLINGSRUD, SVEIN;JENSEN, HANS ROGER;HAVSGARD, GEIR BJARTE