Magnetic detection of a surface ship by an airborne LTS SQUID MAD
作者： K. Tsushima , T. Inaba , A. Shima , M. Fujinuma , N. Tojyo
DOI: 10.1109/77.919486
关键词: Linearity 、 Dynamic range 、 Physics 、 Magnetism 、 Magnetometer 、 Optics 、 SQUID 、 Nuclear magnetic resonance 、 Magnetic anomaly detector 、 Wide dynamic range 、 Voltage
摘要: A three-axis LTS SQUID magnetometer was fabricated as a Magnetic Anomaly Detector (MAD) onboard an aircraft. measuring magnetic total field, which is rotational invariant, suitable for performing distant target detection in unshielded mobile operation. To configure the magnetometer, several requirements had to be considered such ultra wide dynamic range above 150 dB, extremely accurate linearity and orthogonality of three-axis. The vector component with sufficient obtained by synthesizing output voltage counts SQUID's flux-voltage (/spl Phi/-v) periodicity. field from three components using our scalar composition algorithm that corrects non-orthogonality so on. compensation quadratic form permanent, inductive eddy-current magnetism used suppress noise caused platform manoeuver. Our MAD designed implement procedures mentioned real-time. equipped tail boom aircraft its performance evaluated flight tests. We confirmed provided high sensitivity suppressing noise, successfully detected surface ship.
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