ABSTRACT
The paper presents possible applications of one or a set of two interferometric radars for measuring lateral vibration of railway bridges. The measurement of acceleration of lateral vibration with the use of accelerometers is easy to implement. Dynamic measurement of lateral displacement under dynamic loads with the use of classic mechanical indicators is difficult or practically impossible because of the need to build special scaffoldings. The interferometric radar seems to be a very good tool for remote measurements of displacements. The problems appear when a bridge vibrates in two directions: horizontal and vertical. The paper presents two approaches: the application of one interferometric radar and specific analytical calculation and the application of a set of two interferometric radars to measure lateral vibration with high accuracy. The applied measurement methods are presented with the example of research conducted on railway bridge.
