US Navy’s SEWIP program continuously upgrading its shipboard electronic warfare system to keep pace with threats

Naval Warships now faces wide spectrum of threats from air threats such as hypersonic missiles, ballistic and cruise missiles, rail guns, lasers , UAVs  and underwater threats like cavitating torpedoes.  One of the prime over water threat is from Anti-Ship Missiles type of guided missiles mostly of the sea skimming variety, and many use a combination of inertial guidance and active radar homing. A good number of other anti-ship missiles use infrared homing to follow the heat that is emitted by a ship; it is also possible for anti-ship missiles to be guided by radio command all the way.