SM400 Block 2 is a non-rotating, four faced S-band (NATO E/F-band) volume search radar designed to simultaneously provide air surveillance, helicopter control, surface surveillance and weapon control functions. The SM400 Block 2 is the successor of the SM400 installed on the Royal Netherlands Navy Holland Class OPV and Karel Doorman Joint Support Ship. It will be installed on the Royal Netherlands and Belgian Navy future ASW-frigate.
Exploiting proven multi-beam and Doppler processing principles, SM400 Block 2's advanced system architecture delivers simultaneous functionality at high update rates regardless of environmental and clutter conditions. These include large search volume with high elevation coverage, reliable detection of small targets, rapid automatic track initiation, low false alarm rates, and helicopter detection and approach control.
SM400 Block 2 has been specifically engineered for installation in an integrated mast structure. Its four faces provide unrestricted coverage, while the hardware design allows for easy accessibility for maintainers inside the mast, so promoting a high Mean Time To Replacement and limiting the exposure to external hazards. SM400 Block 2 is known as SMILE in the IM400 systems contracted by the Royal Netherlands Navy.