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High-sensitivity subsurface sensing system
High-sensitivity subsurface sensing system
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机译:高灵敏度地下传感系统
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摘要
A target is sensed by an antenna array having a transmitter antenna and a receiver antenna, both of which are caused to be electromagnetically coupled to the target. The antenna array is rotated, and as the array rotates, a change in at least one of the coupling between the transmitter antenna and the target and the coupling between the receiver antenna and the target is detected at multiple rotational orientations of the antenna array.
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