{{Short description|Naval weapons system developed by the Japanese Defense Ministry}} 300px|thumb|FCS-3A on board JS ''Akizuki'' '''FCS-3''' is an integrated naval weapons system developed by the Japanese Defense Ministry for the Japan Maritime Self-Defense Force.
This system is composed of weapon-direction and fire-control subsystem and a multi-function radar subsystem. The multi-function radar subsystem adopted active electronically scanned array (AESA) technology, and there are two sets of antennas: the larger one is a C-band radar for surveillance and tracking, the smaller one is an X-band radar as a fire-control radar.<ref name="Yamazaki2010">{{Cite journal|author=Makoto Yamazaki|date=October 2011|title=Combat systems of modern Japanese destroyers|journal=Ships of the World|issue=748|pages=98–107|publisher=Kaijin-sha}}</ref>
After a prolonged sea trial on board JS ''Asuka'', this system was introduced in 2007 on the {{JS|Hyūga|DDH-181}}. The enhanced version, FCS-3A, was employed on the ''Akizuki''-class destroyers.,<ref>[http://www.naval-technology.com/projects/19ddakizukiclassdest/ 19DD Akizuki Class Destroyers, Japan]</ref> and limited-function version, OPS-50, was also delivered for the {{sclass |Izumo|helicopter destroyer}}s. The fire-control function are omitted in the OPS-50 system, so they have only one set of antennas operating C-band.<ref>[https://web.archive.org/web/20140226234240/http://www.navyrecognition.com/index.php/component/content/article/153-jmsdf-japanese-navy-aircraft-carriers/1182-22ddh-izumo-class-helicopter-destroyer-carrier-ddh-183-184-jmsdf-japan-datasheet-pictures-photos-video-specifications.html Izumo-Class Helicopter Carrier DDH-183]</ref>
The Asahi-class destroyer features an FCS-3A radar that uses Gallium nitride technology to improve its performance.<ref>{{Cite web|url=https://www.armyrecognition.com/archives/archives-naval-defense/naval-defense-2017/first-jmsdf-25dd-class-asahi-asw-destroyer-started-sea-trials|title=First JMSDF 25DD-class Asahi ASW Destroyer Started Sea Trials|date=27 July 2017|website=Navy Recognition|access-date=8 January 2019}}</ref>
==References== {{reflist}}
Category:Military radars of Japan Category:Naval radars Category:Japan Maritime Self-Defense Force Category:Military equipment introduced in the 2000s