Method and device for automatic locating of targets

摘要

Method for automatic locating of a target marker (2a) using a geodetic measurement instrument (14). Accordingly the unit transmits electromagnetic radiation in a vertical fan shape (17) towards the target. Said radiation is pulse modulated with a pulse rate of between 10 and 50 kHz. A first receiver unit detects a reflected signal from the target in a time-dependent manner and uses its time of flight to determine a distance, which is stored if necessary. Independent claims are made for: a device for automatic location of a target marker; a receiver unit with a memory for storage of a received signal; and geodetic instrument such as a theodolite or leveler that has an inventive target marker location device.