"P(GD102/09/H082)" . . . "0" . "3"^^ . . . "AMR Gradiometer for Mine Detection and Sensing"@en . "25" . "3"^^ . "AMR Gradiometer for Mine Detection and Sensing"@en . "RIV/68407700:21230/11:00191101!RIV12-GA0-21230___" . "AMR Gradiometer for Mine Detection and Sensing" . . . "AMR Gradiometer for Mine Detection and Sensing" . "Procedia Engineering" . . "RIV/68407700:21230/11:00191101" . "Vyhn\u00E1nek, Jan" . . "21230" . "mine detection; magnetic sensors; AMR; gradiometer; eddy currents"@en . . "http://www.sciencedirect.com/science/article/pii/S1877705811057584" . "We used anisotropic magnetoresistors (AMR's) to build an advanced mine detector. The sensing head involves a gradiometric pair of AMR sensors and a continuous-wave driven excitation coil, so the gradiometer is capable of detection ferromagnetic materials as well as diamagnetic metals. The sensors are specially arranged to suppress the large AC-excitation field, so the mine detector senses both DC and AC field gradient responses of the object of interest. Being limited by the sensor noise of 214 pTrms/sqrtHz at 1 kHz, we were able to detect an 50 mm x 50 mm x 1.5 mm aluminum test object in a 20 cm-depth using a 300uT, 1kHz excitation field."@en . "5"^^ . "[13119AEB2C9A]" . . "Jano\u0161ek, Michal" . . . . "10.1016/j.proeng.2011.12.089" . . . "000300512400087" . "1877-7058" . "185384" . . "We used anisotropic magnetoresistors (AMR's) to build an advanced mine detector. The sensing head involves a gradiometric pair of AMR sensors and a continuous-wave driven excitation coil, so the gradiometer is capable of detection ferromagnetic materials as well as diamagnetic metals. The sensors are specially arranged to suppress the large AC-excitation field, so the mine detector senses both DC and AC field gradient responses of the object of interest. Being limited by the sensor noise of 214 pTrms/sqrtHz at 1 kHz, we were able to detect an 50 mm x 50 mm x 1.5 mm aluminum test object in a 20 cm-depth using a 300uT, 1kHz excitation field." . "NL - Nizozemsko" . . . . "Ripka, Pavel" . .