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FMCW radar implementation in River Information Services in Poland

River Information Services (RIS) were implemented in Poland in 2013 on the lower part of the river Oder. Their numerous system sensors include FMCW radars. Shore based radars provide data for various services, such as traffic information, traffic management and calamity abatement support. The Polish RIS system uses the 4G™ FMCW radars. Considering their low output power, small size, weight and width of the radar beam, they appear best suited for the system. The stretches of waterways covered by the radars are located in urbanized, harbour and non-urbanized areas. The RIS implementation included deployment of nine radar sensors on bridges, two on masts, and one on a building. The article presents experience after the first year of operation of FMCW radars in the Polish RIS system.