Indian AESA Radar Developments

Adm_Kenobi said:
The LCA in a clean configuration isn't 0.3m^2 from all angles, and it did not track a clean configuration Tejas, external fuel tanks act like a truck when it comes to radar returns.
The prototype Uttam can track a 2m^2 target at around 150km.
Mk1A will have 912 TRMs, and Mk2 will have around a thousand (not 1200-1400).
Click to expand...
Same QTRM and same in number, peak power transmitted is ~8.9kw.
Avg is 880w.
AMPL is manufacturing most of it (expected I guess).

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Rajput Lion said:
Maybe for initial prototypes. Since MK2 is litetally a next decade program, the final production version having a GaN variant is a given.
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https://twitter.com/x/status/1854170807473197522


Again..

But i agree with you..

This is direct adopted mk1A radar to Mk2 prototypes..
Seems like from Day 1 it ll fly with aesa.

Definitive radar will developed or upgraded for mk2 production.
 
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Which radar was of dimension 6 meter x 6 meter x 0.3 meter kind ? I forgot exact but there was one in the past 2 years. Well the AAAU testing of the same , assemble and testing jigs etc are sought.
 
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marich01 said:
Which radar was of dimension 6 meter x 6 meter x 0.3 meter kind ? I forgot exact but there was one in the past 2 years. Well the AAAU testing of the same , assemble and testing jigs etc are sought.
Click to expand...
You talking about IN's LRMFR, bro?

Sathya said:
Can someone explain 3 rd modification?
@Rajput Lion
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Looks like a lot of its features like Antenaa Control Unit etc. are fused into its main-circuit for improved detection of low-speed targets against ground/sea-clutter. Hence no requrirement of separate BCU.

But I could be wrong here. Maybe @Gautam & @randomradio could chime in here:)
 
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Rajput Lion said:
Looks like a lot of its features like Antenaa Control Unit etc. are fused into its main-circuit for improved detection of low-speed targets against ground/sea-clutter. Hence no requrirement of separate BCU.
Click to expand...
BCUs & ACUs are power control units. They control when, where & how much power is transmitted to the antennas. They can also act as frequency, range & mode switching equipment.

ACU based radars are generally more agile & can do the switching faster. But they are limited by how much power they can transfer & also heat up a lot quicker. So not great for larger radars. BCU based radars can operate in a huge bandwidth of power & are generally easier to cool. But they are bulkier & not great for applications that have a limited space & power constraint.

The Virupaksha will be pushing the boundaries of ACU's capacities. But LDRE thinks that with GaN transistors & a new vapour cooling system they can still have an ACU.
 
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I wonder what's stopping the DRDO from navalizing the Arudhra radar as a replacement for Fregat/Top Plate on the Delhi and Talwar classes. The navy specific modes could probably be ported over from other programs.
 
Speedster1 said:
I wonder what's stopping the DRDO from navalizing the Arudhra radar as a replacement for Fregat/Top Plate on the Delhi and Talwar classes. The navy specific modes could probably be ported over from other programs.
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It is already 'navalised', it is the Indian Navy that has to show interest in a smaller (compared to 6m SBR) S-band radar to replace Fregat on older ships. DRDO has already moved to an improved version of Arudhra MPR for mountain radar.
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Sathya said:
@Rajput Lion & @randomradio

Specifications for Mk2 Uttam radar
It's GaS TRM.

Looks like same radar for Mk1 & Mk2.
Click to expand...

If it's true, then I'm not surprised. GaN is still in the works, and GaAs is better for standardization.
Sathya said:
https://twitter.com/x/status/1854170807473197522


Again..

But i agree with you..

This is direct adopted mk1A radar to Mk2 prototypes..
Seems like from Day 1 it ll fly with aesa.

Definitive radar will developed or upgraded for mk2 production.
Click to expand...

You can have 10 W GaN TRM too.
 
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For a change it is good to hear ISRO talking on defence capability part.

The current global situation, with the ongoing war between Ukraine and Russia and other conflicts, poses a significant threat of a third world war. This is why every country is preparing itself, and India is no less than others in designing and preparing a robust shield for its own defence," said SV Sharma, Deputy Director, ISRO, after a National Security Summit organised by Sigma 9 Aerospace Defence in Hyderabad.

https://twitter.com/x/status/1864384057662152922
 
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