| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an inspection device of object capable of accurately calculating the material quality of a target in spite of a relatively simple circuit constitution. <P>SOLUTION: The searching device of the object includes a transmitter 1 for intermittently transmitting an electromagnetic wave, a receiver 2 for receiving the electromagnetic wave from the transmitter 1 reflected by the target A, a distance calculation part 26 for calculating the distance up to the target A on the basis of the time required from the transmission of the electromagnetic wave to the reception thereof and the speed of the electromagnetic in a medium B, a specific inductive capacity estimation part 28 for calculating the reflection coefficient of the boundary surface between the medium B and the target A from the intensity of the electromagnetic wave transmitted from the transmitter 1, the intensity of the electromagnetic wave received by the receiver 2 and the distance up to the target A with respect to a plurality of frequencies and statistically estimating the specific inductive capacity of the target A using the reflection coefficient, the specific inductive capacity of the medium B and the respective frequencies of the electromagnetic waves and a material quality judging part 29 for judging the material quality of the target A on the basis of the specific inductive capacity. The transmitter 1 transmits a signal of UWB as an electromagnetic wave. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
