SPG-62
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The AN-|AN/]]SPG-62 is a radar#continuous wave|continuous wave]], mechanically steered, radar#Warship combat radars|terminal guidance illumination radar]] for the RIM-156 Standard SM-2]] missile. These missiles use semi-active radar homing]] for their final guidance, so the Mark 99 fire control subsystem of AEGIS time-shares the illumination radars. Other functions of the Mark 99 system include loading, arming and launching the Standard missiles using the vertical launch system]]. Primary search and midcourse guidance comes from the AN-|AN/]]SPY-1]] phased-array radar, Only as the missile is making final approach to its target does there need to be AN/SPG-62 energy on the target, so the AEGIS battle management system]] can have more missiles flying against more targets than it has illuminators. Burke-class]] and Kongo-class]] destroyer]]s have three and Ticonderoga-class]] cruiser]]s have four AN/SPG-62's. Spanish ocean escort|F-100 frigate]]s, versions of which are used by Australia, Norway and South Korea, have two. These radars, made by Raytheon, operate in the EU-NATO-US frequency bands|I/J bands]] with a peak power of approximately 10 kilowatts. Obviously, the specific operating frequencies change frequently and are classified, for reasons of electronic warfare#electronic protection|protecting the missile guidance system]] from the target's electronic countermeasures (i.e., its electronic warfare#electronic attack|self-protection electronic attack capabilty]] |