| 摘要 |
A locator for determining the location of a buried utility line from an offset position. The locator has a top peak antenna, a bottom peak antenna, and a null antenna. The locator is tilted until the null antenna is pointed directly at the utility line with the top and bottom peak antennas disposed in a locating plane that is substantially vertical and perpendicular to the line. The tilt angle of the locator and the direct distance between the locator and the utility is measured. The tilt angle and direct distance are used by the processor to determine the vertical and horizontal distances between the locator and the utility. |
