| 摘要 |
<p>PURPOSE:To inspect a data of an underground buried object completely, by converting a high-speed signal into a low-speed signal in an underground probe radar. CONSTITUTION:Electromagnetic wave radiated underground from a transmitting antenna 2 is reflected on a buried object 3 underground and received with a receiving antenna 4 to make an electric signal. The electric signal is written into a scan converter tube 6 via a preamplifier 5 and, then, the surface of the converter 6 is scanned at a low speed to be read out as A/D convertible low speed signal. This enables probing of the underground buried object quickly and completely.</p> |
