Radio Levelling System for Civil Engineering Applications

This paper presents an automatic radio levelling system based on microwaves in the 2.45 GHz band. In contrast to common optical levelling systems it doesn´t need line-of-sight sites. Therefore, it enables height detection measurements even through massive brick walls. Results of a height measurement taken through a 29 cm thick laid lime silicate brick wall will be reported as an example. The performance of an automatic levelling system will be explained.