How strong is the latest Japanese radar, S.H.I.E.L.D.?

2022-05-24 0 By

Aegis system, also known as AEGis system, means air warning and ground integration system, is an integrated combat system.The United States developed S.H.I.E.L.D., phased array radars and vertical launch systems in the 1970s and later fitted them to its Ticonderoga-class cruisers, making them extremely effective.Later, aegIS was exported overseas, and the Kongo class, Agog class, Moya class of Japan and The King Sejong Class of South Korea were all equipped with AEGis of the United States, which was worthy of the shield ships.But Japan has already developed its own active phased array radar, FCS3.The Falklands War came to an end in June 1982.Although the British won the war, Argentina shocked the world by sinking the British Type 42 Guided-missile destroyer Sheffield with an exocesan anti-ship missile.The Soviet Union, Japan’s biggest enemy to the north, had the world’s most powerful anti-ship missile force.Faced with the threat of missile saturation attacks, developing a more advanced radar that can track and guide multiple missiles at once has become a top priority for Japan.In the 1980s, the United States launched the Ticonderoga class cruiser, first equipped with SPY1 phased array radar and aegis system.In 1986, Japan officially started the development of FCS3 radar, which was jointly developed by Mitsubishi Electronics and the Japanese Defense Agency.The early FCS3 radar used a single mechanical rotation mode for scanning. Later, after the introduction of the AEGis system in the United States, it adopted a four-sided fixed array radar antenna similar to aegis. It was tested on the ship in 1994 and formally finalized in 2000.The FCS3 system consists of a four-sided fixed array of phased array radar antennas, each with a frontal length of approximately 1.6 m x 1.6 m and consisting of 1,800 transmitting/receiving units operating in the C-band.Earlier models of the radar unit used excellent Gallium arsenide semiconductor materials from Japan, while later versions used more advanced gallium nitride semiconductor materials, which not only have excellent performance, but also relatively low cost.It also supports x-band search and fire control radars, which are standard dual-band phased array radars.So if you look at a Japanese Akiyuet-class destroyer, each side has a large patch and a small patch, the big one is c-band radar and the small one is X-band.The U.S. Aegis is dual-band S and X-band.As a matter of fact, both the United States and Japan had fierce internal discussions on whether to use C-band or S-band when developing phased array radars.The Japanese Self-Defense Force finally adopted the C-band, whose detection distance is not as far as the S-band radar. However, on the other hand, it has certain advantages, such as better miniaturization and portability, better anti-electromagnetic interference ability, and better search and tracking of low-altitude targets.This is what the S-band does not have and lacks most.S-band detection range is long, but low – altitude target detection ability is insufficient.The US aircraft carrier fleet made up for the deficiency of low-altitude detection by using early warning and control aircraft, but the Japanese fleet had no aircraft carrier and no carrier-borne early warning and control aircraft at that time. In order to conduct low-altitude detection, it had to be self-sufficient through C-band.Another advantage of C-band is that it uses less power, so the array is smaller and consumes less electricity. It is easier to miniaturize and carry light ships. Therefore, Japan’s 5,500-ton topmost is equipped with a dual-band phased array.It is worth mentioning that the X-band phased array radar was developed based on the Active phased array radar of the Japanese F2 fighter aircraft.With the active phased array radar, which allows it to switch targets at any time, AEGIS is capable of taking on 32 targets at the same time, a much better capability than the older Aegis.The old Aegis system used s-band passive phased array radars, while the X-band fire-control and irradiation radars were provided by mechanical scanning radars, so targets were limited to a dozen or so at most. Of course, this disadvantage does not exist on the latest Aegis system.In general, although FCS3 is weak in the search for high-altitude targets due to its small array and low overall power, its search range and accuracy for low-altitude and sea-skimding targets are no less than that of America’s SPY radar.Due to the existence of multiple variants of the FCS3 system, the MSDF has not released the exact numbers of FCS3 and its derivatives.We can only speculate that the maximum detection range from the original FCS3 to the latest OPY2 is roughly between 200 and 400 kilometers.The latest OPY2 radar can detect up to 200 nautical miles, or 370 kilometers.It is also capable of tracking around 300 air and surface targets simultaneously, making it highly resistant to “saturation strikes”.With high detection accuracy, Japan claims to be able to detect and accurately track not only anti-ship missiles, but also 127mm naval artillery shells.Commissioned in 2009, the Japanese-class helicopter destroyer was first equipped with the FCS3 base radar.At the same time, the 16-cell MK41 missile vertical launch system, which is rare on the Japanese Helicopter destroyer, is equipped with the Improved SEA Sparrow missile from the United States.The development and improvement of a shipborne radar must be matched with the air defense missile as the phased array radar, which not only has the ability to find enemy targets, but also the ability to guide their own missiles.This is an important reason why the JSDF will continue to equip aegis after it has its own AEGis, because aegis is compatible with all U.S. missiles and can launch standard ii, Standard III, Standard VI, sea Sparrow and other types of missiles.But so far, Japan’s FCS3 phased array radar, despite its good performance, can only guide the improved Sea Sparrow missile of the United States. Whether standard II can guide it is still unknown.Japan actually wanted to develop its own medium-range active radar missile early on, but cancelled it due to lack of development costs and slow progress.Later, the improved Sea Sparrow missile was introduced from the United States to match its phased array radar. Because the improved Sea Sparrow missile is a passive radar guidance mode, Japan had to install a smaller X-band radar beside its phased array radar to provide guidance for the fire control radar.FCS3 radars and their improved versions are currently installed on more than a dozen JMSDF destroyers, including two Japan-class destroyers, four Akiyuki class destroyers, two Asahi class destroyers, two Izumo class destroyers, and more than two dozen currently under construction.The earliest day to class destroyer is FCS3 equipment, the foundation of the installation level is FCS3 type A, it improved the performance of C band radar, level and in A cloud on the helicopter destroyers equipment is OPS50, because there is no loading A cloud level to improve the sparrow missile, so don’t need the x-band radar, C band only need equipment, used for the air search and aircraft scheduling.Different from the earlier FCS3 radar, OPS50 has adopted gallium nitride and its performance has been greatly improved. The maximum detection range has been increased to 370 km. Although the C-band is used, the detection range is almost the same as that of the American passive phased array SPY1, but there is still a big gap between the American active phased array SPY6.The latest two Asahi class destroyers to enter service are the OPY1.The top frigate uses the OPY2.OPY2 performance is very good.A single main array size of 2.4mx2.4m, area of 5.76 square meters, weight of 650kg, a total of 4 fronts, compared to the American SPY3 single main array size of 2.72mx2.08m, area of 5.66 square meters, weight of 830kg, a total of 3 fronts.The OPY2 has surpassed the SPY3 on Ford-class aircraft carriers in size and performance, and of course still lags behind the most advanced SPY6 in the US.OPY2 can operate air, sea, periscope and electronic support at the same time under normal circumstances, and can also operate fire control and electronic attack functions at the same time when necessary.OPY2 integrates four functions of air, sea, periscope and main fire control electronic attack into the main array surface. In particular, it uses gallium nitride broadband universal module and digital beamforming technology to realize the integration of electronic attack function into the radar aperture.Electronic attacks need to face a variety of targets, and their bandwidth is far greater than that of ordinary radar.OPY2 can take multi-beam/time-sharing mode to direct against multiple anti-ship missile targets when carrying out electronic attack tasks. Thanks to its powerful power, its self-defence electronic jamming capability will be very considerable, which can be said to stand out among ships launched at present.With such a large main front as an EA means, it stands out among shipborne radars.And Japan is building the most superior, planned to build 22, will also be equipped with THE Japanese SHIELD OPY2, with strong air search and combat capabilities.The most frightening thing about Japanese warships is that they can use a large number of American weapons.In theory, S.H.I.E.L.D. can guide not only the mid-range Sea Sparrow and the Mid-range Standard II.Currently, active radar guidance is used in standard II Block IIIC and its successors, as well as standard VI, and there will be no major compatibility problems with these missiles, which will greatly enhance THE combat capability of THE Japanese shield.In the future, Japan will form a strong lineup with 4 aircraft carriers, 8 AEGis ships of the United States and 28 Japanese shield ships as the core, with excellent air defense, anti-submarine and anti-missile capabilities.The eight Aegis ships have strong anti-missile capability and long-range air detection capability, which can play the role of command center, while THE AEGis of Japan can provide stronger low-altitude detection and defense capabilities, which are complementary in the fleet. The Japanese aircraft carrier will carry the fifth-generation fighter jet F35, which has strong air and sea control capabilities.Japan already has its own S.H.I.E.L.D. and currently has nearly 20 of them, with a future number of 36.