| 摘要 |
<p>PURPOSE:To calculate the position of an object to be detected without moving an antenna placed on the surface of the earth, by arranging four dipole antennae to the sides of a square formed around crossed dipole antennae. CONSTITUTION:Crossed dipole antennae 1, 2 are arranged to the center and four dipole antennae 3-6 are arranged to the sides of a square. In this state, respective dipole antennae 3-6 opposed to the dipole antennae 1, 2 for reception or transmission are alternately changed over to be used in transmission or reception. By this mechanism, the radiation of a single electromagnetic pulse toward the underground and the reception of the echo from an underground object are performed and the embedded direction, the angle and the distance of the long underground object is calculated. By this method, the position of an object to be detected can be calculated without moving the antennae.</p> |
