As I know Russia will also replace old S-300PT and S-300PS with Vityaz meduim range SAM with 9M96 missiles with range of 120 km and AESA radar.

http://www.aviationweek.com/aw/blogs…7-ae6d649146cd

And?

What state of the art Russian radars Syria have? Syria got a lot of equipment in Soviet times. After USSR collapse Russia sell only for real money, which Syria didn’t have and after USSR Syria actually did not get anything from Russia. even Pantsirs Syria pay with iranian money. Even 36D6 could not be seen as state of the art radar (maybe for Syria is), because Russia have now for two generations more modern radars. The other important question is quality of Syrian radar crews. Their history shows, they are not really legends in air defense.

Today modern Russian SAMs use PESA radars like S-300/400, Buk-M2, Tor-M2, Pantsir-S1. AESA will be on Vityaz and S-500. But those systems will not work alone. They will work integrated in whole air defense system. Russian air defense have all components as opponent air force. They have passive ELINT systems Kolchuga, Orion, Valeria,…, jammers like SPN-2,3,4,30,…, various decoys and Gazetchik chaff and flare system with HARM approach detecting system for defense against HARMs. Air defense also have network of visual observation posts equipped with day and night equipment (be it II or TI). In that IADS S-300/400 could get enough small cell for target from outside sources, that it doesn’t need to turn on its radars, but just launch missiles with ARH to this cell, where it find target with its own radar. Passive ELINT systems could very easily triangulate stealth planes, if they use radar, voice com, data com, IFF, jammer, etc in quite big distance. Combine this with metric wave radars and visual observation posts, air defense will quite well know, where stealth planes are. Also, there is a big question, how effective are ground jammers against F-22/35 radars, communications, etc? I know, that older ex-DDR jammers were effecive against F-16 radar, which become blind (white screen). What about newer more modern jammers?

http://www.youtube.com/watch?v=58N6Plr17GU

http://www.youtube.com/watch?v=nh32xqKd2dM&feature=related

On those two videos is clearly seen, that even stealth F-22 is very clearly seen optically and on FLIR, so it is also seen for visual observation posts. Stealth planes doesn’t represent that big danger for competent air defense.

Talking about how Israel planes jamm modern Russian air defense systems in Syria in 2007 attack is BS. What modern SAM systems Syria have in that time? Igla MANPAD. Does it have radar? No, so they could not jamm it. Other SAM systems and radars are technology from fifties, sixties and seventies (SAM-8 Osa). Nothing modern and all already known. Pantsir in that time was not even in production jet, so Syria didn’t have them. On the other hand attack occur in peace time. How many SAMs have in peace time missiles on launchers and crews inside systems ready to fire? If there is an intruder in air space in peace time, will you sent fighter to intercept intruder or launch a SAM on it? What if this was civil plane and Syria launch SAM on it and shot down a passenger plane?