| 摘要 |
The present invention relates to a geodetic surveying system for locating underground facilities, which is capable of downloading the standard and coordinate information of various underground facilities laid underground using a tablet, directly inputting, to the tablet, information measured by underground probing equipment in the field without an error, inputting the measured information to a management computer by selection, using real-time transmission or direct online access, thereby collecting the measured field information for the underground facilities without an input error and updating and managing the measured field information with high reliability to progress maintenance quickly and accurately and statistically analyzing various information for the underground facilities with necessary forms. The geodetic surveying system of the present invention comprises: a tag unit, underground probing equipment, a tablet, a mobile communication network, and a management computer. The underground probing equipment includes: a control unit; a transmitting part consisting of a frequency changer, a mixer, and an amplifier; and a receiving part consisting of a low noise amplifier, a phase changer, mixers, low pass filters, amplifiers, high pass filters, and analog-to-digital converters. The tablet includes a first wireless unit, a tablet control unit, a second wireless unit, a third wireless unit, a GIS information storage unit, and a touch display unit. |
