Continues from last post
So you highness allows for the IFF to retain its importance without answering the main question as to why would the Russians need their interrogators to be this big when the whole world is doing it differently? Detection and targeting of a LO target is a challenge but how is interrogation a challenge?
Bigger aperture = higher gain = longer range = able to do IFF at longer distance = able to engage sooner while still obey ROE , pretty important for stealth aircraft if you ask me ( but ofcourse fan boy dont care about IFF ). A bigger IFF antenna also mean it is more directional , which mean PAK-FA will alert less targets in the area compared to normal IFF antenna
Also according to Russian official information the array can also be used as jammer in L band which mean it can be used to jam certain thing like Link-16 datalink
And besides IFF involves some of the same waveform management techniques that for radars and jammers require and that leaves your objection regarding aperture size only. Which is suitably discussed elsewhere herein.
And even if these are just IFF for really long range interrogations then, how do you think it helps if the F-35 is showing up on the VHF and L-band but not on the X-band and is either not responding or improperly responding to such large range IFF challenges. How would you classify such an interrogation? At such long ranges if the F-35 is classified as a high probability adversary then does it not help the defender?
That not how an IFF interrogator work , they are not radar , they do not rely on the reflection of target to work ( IFF interrogator is a completely different thing from the NCTR of modern radar ). If anything the IFF can be imagined like a transponder, after you detect a target with your radar , you use the IFF to send a code toward that direction ,there already a set of ( specific question code and reply code as determined before the aircraft even took off ) , the target is actually in your side , it's IFF system will know what code to send back to answer to your interrogation code ,if it send the correct code then you will know that a friend , if not then it is an enemy or an aircraft without IFF
And I don’t understand your insistence that the L Band radar on PAKFA cannot be used for FCR. Well ok, a true fire control will be difficult but what about merely keeping the range information fed to the AAM. Why must it fail in that..
Because of gain , a L band of that side will have an enormous beam width compared to the X band fire control radar , a bigger beam width will not only reduce your accuracy , it will also reduce your radar range , because power is much less concentrated , you can use the formula below to see how big a difference would be for an X band and L band of equal size ( which in this case even worse because the L-band arrays is smaller.)
Another problem with the L band array is that it doesnt have a secondary row , an ESA ( both active and passive ) without at least 2 elements on 1 plane cannot be steered to the board side of that plane ( because they rely on wave interference to steer the beam ) what does it mean ? It mean the radar wont be able to determine target altitude , and the problem will only get worse when there is more than 1 target inside the resolution cell ( 1 F-35 and 1 MALD-J or more likely multiple F-35 and multiple MALD-J )
And as said before , while Stealth aircraft will have higher RCS at low frequency , the RCS doesnt increased that much ( and radar gain will reduce unless you increase the aperture size significantly ) , so just because you have a L band array doesnt necessary mean that array will see stealth target at longer distance than your X band array.
Why the hell would Russians use this big IFF? Are they dumb.
I already explained before
But let me ask you this , if stealth is so easily to be neutralised then why all the big nation (china , USA , Russian , Japan , UK , Canada , Australia , Korean , Indian ) want stealth aircraft ? are they dumb ?
Because it’s a habit by now. Most people buying F-35 today had a healthy lead in all the anti-VLO technologies. Today they allowed their own lead to peter away for F-35.
I don’t mind it..
So if Russian uses a big IFF system that can help alot for ROE that is dumb , but if various countries spending billions dollars in pursuing stealth technology even though it can be negated so easily like you thought , then that is not dumb ?
Americans have always tried to put roadblocks in the path of others which is the only way they have grown ‘powerful’.
so you believed that all these countries like China , Russian , Japan ,korea , Canada , Australia , Israel ..etc are dumb and they all follow American lead in stealth even though it is a death end ?
1) Expendable, towed, integrated whatever. Hardly matters. There are more than enough ways to know range and send in the AAM..
So why havent you pointed out a valid one without an enomous barrier ? And what make you think that Rafale side is the only side that can use various tactics and extra help from ground VHF radar , AWACS , Stealth UAV ..etc ? what stop the F-35 side from having their own support ? what if the F-35 was assigned to work with an AEGIS destroyer ?
MALD-J will be effective in only the front sector and only against Active seeker heads.
yep ,how fair , it so easy for you to believe that Spectra with it's tiny antenna can work from 1Hz to 100Ghz but of course MALD-J can only work again seeker head and X band radar because USA is studpid
according to your version of physics if something is small then it cant jam a big radar, all the thing like signal-noise ratio doesnt matter at all
The semi actives and SAGG won’t even reveal themselves till the very last moment. The future will see even better warheads on these missiles..
Semi active missiles will reveal the location of the illuminator
2) Hardly matters, the Jammer can be put doing in its bearings and only the range needs to be worked at which can be done off board. There were times when the height component too had to be calculated separately and automation of this much technology is not difficult..
The only thing you know is the bearing ( which is esencially what a RWR will tell you anyway ) , you dont know range , altitude , aspect angle , velocity of target. And you cant just said off board and be done with it , done off board how ?
All aspect stealth is American contribution to the world. The world never believed in it and that is why the world has take only the relevant portion of shaping and RAMs for a limited frontal stealth which will be used only in the attack modes, not in hunter modes.
So J-20 , J-31 , PAK-FA , F-35 , JSM , SOM , Storm shadow , various new UCAV ..etc are not all aspect stealth then ? and that assessment based on what ? your MK1 eye ball analysis ? how do you even define stealth here ? at what dBsm value that they should be considered stealth ?
Don’t look like big kill boxes if you go by, what the professionals are discussing among themselves (refer Dr. Igor Sutyagin in RUSI conference, linked above)
i said resolution cell , not just range resolution , do you understand why they have to specificly said " for distance measurement ? , go have a look what resolution cell consist of will you ?
and as stated before , you want shorter pulse for better range resolution then you will have to sacrifice pulse power , that mean less range.
Which is backed by extant technology. Nobody begrudges S-200 or Dvinas or even early generation Patriots.
They still complain when USA sell F-16A , M1 to certain countries , it always a matter of politics here