No one is saying that the Type 056 has AEGIS or a CMS even similar to a Type 052D in terms of scale, network bandwidth and processing power. But it does have a CMS on its own, according to some of the things I have read or mentioned about it, not to mention illustrations on defense expos. All its sensors are tied to a central network system, and there are workstations inside the ship. Having a CMS does not necessarily mean Aegis scale CMS, just like having a car does not mean you have a Mercedes. It just means a CMS scaled to a small ship.
So all you're saying is generically that the 056 has a combat data system, like every other warship in existence. In which case your statement lacks all relevance to the discussion.
You don't think that I don't know that? ATECS is yet another CMS. By itself, any CMS is malleable like any operating system. Currently ATECS is not used in any long range missile defense system; SM-2 support hasn't been interfaced with it, which is peculiar since there should not be any technological barriers to that except for the US may not be releasing the documentation for the missile to allow you to do it. This can be done as a way to maintain Japanese dependency to the US.
But the point remains ATECS currently doesn't have long range air defense. ATECS ships are not the capability equivalent to the 052D in terms of anti-air, anti-ship and anti-land reach. The Japanese have been developing their own SAMs, but for some reason this project has been suppressed politically. We can revisit this point when they finally do.
No, you have no evidence that ATECS doesn't have long range air defense capability. What you are doing is presuming that it doesn't on the basis that current ATECS ships use ESSM rather than SM-2. In fact the best that you can achieve is to say that you have no idea what ATECS full capability is, which is unambiguously a fact.
The mast, which has a lot of high voltage cables going up and down, is bound to create interference. Steel both reflects and absorbs radio frequency, ferrite molecules convert radio frequency to electricity, and the mast acts like an antenna of its own. It also does not help that the ship's EW is in the mast locations, and would be in the rear aspect of the OPS-24. Not the EW's fault, the EW is in the right place. The general location where L-band search radars are placed is on a mast high in the aft, and you got good examples of ships with this.
Ship's radar horizon is greater than visual horizon due to surface propagation effects, but it only means that a radar on a greater height will have an even greater radar horizon. Ideally, radar should be at the top of the mast.
Nah. If a steel mast disrupts the function of a radar, then the obvious solution is an aluminum mast. And given the location of the mast directly behind the rotating radars, I would make aluminum the default assumption rather than steel. Also, even if the EW system interfered with the radar, which you do have any evidence that they actually do, they would only cause interference when they are actually active, which would only be in the setting of an inbound missile that is close enough to be influenced by the ship's EW system. That should almost never happen in the first place, and if it by chance does happen, then long range air surveillance would be the very last of your worries.
I completely understand how ESSM and SM-2 engagements work, including so called time sharing. And you don't think Shtil/HQ-16 doesn't do it too?
Wrong. First of all, there is no "time-sharing" with mechanical illuminators. None at all. The Aegis Mk 99 FCR is mechanical CWI (continuous wave illumination), which means the ESSM or SM-2 rides a continuous beam all the way in until impact. Only ESAs are agile enough to perform ICWI (interrupted CWI), and only high C-band (or higher) ESAs, since they need to have enough resolution to qualify as FCRs in the first place. Second, "time-sharing" (i.e. ICWI) only applies specifically to APAR, which first pioneered the technique, and probably to later ESAs like EMPAR, Sampson, and SPY-6 (the X-band portion); it is likely that 346A's C-band portion is also capable of ICWI. Earlier radars like the FCRs used on the Murasames and the Orekhs on the 054As, do not "time-share", if by that you mean ICWI.
Type 90 is about 150km on publicly released figures. YJ-83 is 180km. There is no evidence that one seeker is more "advanced" than the other, unless you have access to classified information. Type 90 dates back to 1992, and both missiles could have easily benefited from advances in microprocessor and digital signal processing in all these years. Furthermore, the YJ-83 has EOS versions. But Type 90 is all they have, whereas China has YJ-12 and YJ-18, and is continuing development on even more. I don't know if the Type 90 has datalink control that allows an operator to path the missile through multiple set points, or what kind of evasive maneuvers it has on terminal stage, or what measures does the seeker have against ECM and decoys, and whether the missile can receive updates from aircraft. China, through the Russians, have been exposed to a more focused if not advanced anti ship missile development, compared to the West which dropped the ball on the development of anti ships, and suddenly scrambling to regain it with LRASM and NSM.
I think it is ludicrous to believe that Chinese missile sensor technology of the 1990's is on par with Japanese missile sensor technology of the 1990's. This is such pure fantasy that even a hardcore PLA fanboi should be ashamed to claim this. Regardless, your assertion that certain PLAN ships are "strong" in ASuW is utterly surreal in the face of modern naval combat where advanced combat data systems that can track hundreds to thousands of targets simultaneously will simply laugh at the difference between one ship's 8 vs another ship's 16 missiles, or 180km range missiles vs 150km range missiles, or even supersonic vs subsonic missiles. These ships' missile complements may be "strong" against Royal Thai Navy ships, but against adversaries like the USN and JMSDF, and even RAN and ROCN ships, they are certainly not strong. Against modern navies you literally need a swarm of ASCMs, on the order of hundreds of simultaneously inbound missiles, attacking from multiple directions. Something that can only succeed with a coordinated launch by ships, subs, fighters, and shore-based batteries.