Either APU inlet or SATCOM link.
Most of the discussion surrounding AMCA is still highly speculative. So I won't give importance to most of the information out there until the prototypes start flying after 2025. Or if there's official info.
Either APU inlet or SATCOM link.
Most of the discussion surrounding AMCA is still highly speculative. So I won't give importance to most of the information out there until the prototypes start flying after 2025. Or if there's official info.
True they are keeping everything secret even though most of the things have been developed.
Which is why I wouldn't give importance to information out today that's not official. Even the companies sometimes give out incomplete information in order to keep rivals guessing.
Can u explain me F 35 EW suite works it is said that it uses it's radar to jam targets. So it doesn't need side arrays for jamming purpose. @randomradio
Are you talking about this antenna.
Such combined RWR and ESM architecture was developed for awacs.
so u were right these side arrays will also act as RWR thus providing wideband coverage.

This is one of the test arrays. The final mount will be different.
Yep. The only difficult thing about this tech for DRDO is miniaturization.
SHR is super-heterodyne receiver. Essential for receiving mixed frequency signals.
DTOA is a computer data transfer protocol. The protocol allows segmentation of data based on priority levels & allows immediate transfer of high priority data. Its not difficult to see why this would be needed for RWRs.
IF is intermediate frequency
How RWR and ESM are different from each other. In all aircrafts apart from RWR there are also receivers for ESM how does it help.
And which is better wide band RWR or narrow band.
According to this slide we have RWR working in range of 18-40 ghz is this real.
RWR tells you that an enemy radar has a lock on you. ESM will break that lock by scrambling radar signals. Well that's a simplified way of understanding it. But it is the most important difference.
Both are needed for a complete EW suite. Or you could just carry a bulk jammer, but that takes up a hardpoint.
Anything built for situational awareness should go for wide band. Anything built for targeting should go for narrow band. That's the rule of thumb, there are exceptions of course.
Yep. Many ELINT jets used by ARC/RAW has those too. The NETRA AEW&C project was a boon in more ways than one.
Is this possible since UWB Aesa radar with shared aperture are still in initial stages.
I wouldn't say the UWB is in initial stages. DRDO has published research papers showing at least a dozen different types of TSA antennas. Out of them 2-3 of the antennas went past preliminary development stage. Then there was further selection of 1 TSA design out of the 2-3 available. That is the antenna showcased in AI-19 & various other shows after that.
The antenna was chosen due to its superior abilities. You can only describe something as superior after exploiting its full potential at lab scale. DRDO should have gathered plenty of data by now. They should be able to plug the new antennas to their AESA radars to get an UWB AESA radar. Operational challenges like heat, power & size management needs to be worked out.
ESM is all about passive detection and tracking. The AEW&CS carries DTOA antennas and interferometers, all of which come under ESM.
DTOA is Difference in Time of Arrival. It's an alternative abbreviation for Time Difference of Arrival, TDOA.
RWR helps identify an emitter.
DTOA helps find bearing and angle. Does not find range.
Interferometer helps find range, bearing and angle.
So, with range, bearing and angle data, you can calculate speed, hence the combination of DTOA and interferometers acts like a passive radar and allows passive tracking and targeting.
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But modern RWR also have capability to identity location of emitter using interferometry . How we are going to put DTOA and Interferometric array on aircraft due to space constraints.
RWR only provides a rough figure. You need DTOA and interferometers for high accuracy.
For example, RWR should be accurate to 10-15 deg at 200Km. Whereas with interferometers, you can get even less than 0.1 deg at 200Km. Strictly speaking, interferometers are good for anything.
I'd like to make a correction in my previous post 'cause it's quite wrong.
DTOA helps find bearing and angle. Does not find range.
Interferometer helps find range, bearing and angle.
On AEWC&S, you have the locations on the image you posted in post 911.
When it comes to fighter jets, as of now only Rafale has this capability operational and combat tested. The F-35 is still getting there.
The way Rafale works is quite unique. It has RWR and interferometers which provides very high accuracy on its own. But for much more accurate data, a group of Rafales act together as each individual antenna in a process called multilateration. This technique is also used by navigation satellites. So a group of Rafales will provide far more accurate passive data than an AWACS can. So, for fighter jets, only interferometers are enough along with the RWR.
Afaik single F-35 has the ability to locate, identify, and triangulate emitter locations faster and with greater precision than a flight of three F-16CJs. Interferometry capability is inbuilt on RWR. There is no requirement of separate array.
The F-35 is still WIP. So, no, it doesn't need a separate array, all the hardware is already there. So while it's designed to do all that, whether it actually can is a big question mark right now. You can say the F-35 works as advertised after it achieves FOC, which is still a few years away.