| 摘要 |
A wall detector ( 1 ) for detecting an object ( 3 ) embedded in a substrate ( 2 ) includes a detection antenna ( 5 ) for introducing broadband, high-frequency alternating electric fields ( 9 ) of a measurement frequency (f<SUB>M</SUB>) in the substrate ( 2 ); a measurement system ( 6 ) connected to the detection antenna ( 5 ) for measuring the delayed interaction of the alternating fields ( 9 ) with the object ( 3 ), a calculation device ( 7 ) for detecting the object ( 3 ) based on the measurement signal and for determining the associated depth information, and a permittivity measurement device ( 8 ) with at least one auxiliary potential plate ( 11 ) for measuring the permittivity measurement signal of the substrate at a permittivity measurement frequency (f<SUB>p</SUB>) that is a lower than the measurement frequency; and an associated measurement method.
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