Russia sells S-400 systems to China

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Anlsvrthng

Captain
Registered Member
nlalyst said:
Theoretically it is possible, but in reality it is complicated. First of all, a large stealth bomber like the B-21 or B-2 may not even be more detectable with a VHF radar like the Nebo than with an S-band radar like the Big Bird. In fact, the S-band radar may very well have a better chance of detecting them due to higher output power and superior antenna gain.

At long ranges, the opportunity for pulse integration is reduced, because the radar has to operate at a lower PRF. If there is fluctuation in target RCS that will further reduce the probability of detection. If there are decoys flying in tandem with the stealth bomber that will reduce the probability of detection even further. Weather conditions can further degrade radar performance, as can jamming, etc.

Ideally you would want to paint them from high off center axis angles, but that may be difficult. Stealth aircraft are very well optimized for +/- 60 deg angles of incidence.

Bi-static and multi-static radars are often mentioned as a superior method for detecting stealth aircraft t than mon-ostatic radars. They also have the advantage that the passive components of such radar systems will be difficult to detect and less prone to jamming.
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Could you explain the difference seen from an UHF radar standpoint between a B-52 vs B-2 bomber ?


Both are still in the Mie region, so the shape has minor effect.
The-radar-cross-section-RCS-s-as-a-function-of-the-wavelength-l-The-abscissa-is-the.png
 
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gelgoog

Lieutenant General
Registered Member
dengyeye said:
Does China have any indigenous tech on the level of S-400?
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The S-400 is basically an upgrade of S-300 with modern radar, command center, and two new missile types.
China has its own clone of S-300 with upgraded radar the HQ-9.
China bought the S-400 and will likely reverse engineer its missile technology.
 
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sndef888

Captain
Registered Member
gelgoog said:
The S-400 is basically an upgrade of S-300 with modern radar, command center, and two new missile types.
China has its own clone of S-300 with upgraded radar the HQ-9.
China bought the S-400 and will likely reverse engineer its missile technology.
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Do we know anything about the range of the HQ-9s on the different destroyers? Like 052c 052d 055, are they all the same or different variants?
 
LCR34

LCR34

Junior Member
Registered Member
gelgoog said:
The S-400 is basically an upgrade of S-300 with modern radar, command center, and two new missile types.
China has its own clone of S-300 with upgraded radar the HQ-9.
China bought the S-400 and will likely reverse engineer its missile technology.
Click to expand...
Experts have said many times HQ9 is not a clone of the S300pmu. The Telar may looks similar. The radar not.
 
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