Indian AESA Radar Developments

[Adm_Kenobi]

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).

Same QTRM and same in number, peak power transmitted is ~8.9kw.
Avg is 880w.
AMPL is manufacturing most of it (expected I guess).

https://twitter.com/x/status/1854161410529587548

 

[Sathya]

@Rajput Lion & @randomradio

Specifications for Mk2 Uttam radar
It's GaS TRM.

Looks like same radar for Mk1 & Mk2.

 

[Rajput Lion]

@Rajput Lion & @randomradio

Specifications for Mk2 Uttam radar
It's GaS TRM.

Looks like same radar for Mk1 & Mk2.

Maybe for initial prototypes. Since MK2 is litetally a next decade program, the final production version having a GaN variant is a given.

 

[Sathya]

Maybe for initial prototypes. Since MK2 is litetally a next decade program, the final production version having a GaN variant is a given.

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.

 

[marich01]

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.

 

[Sathya]

https://twitter.com/x/status/1855522536328749094

Can someone explain 3 rd modification?
@Rajput Lion

 

[Rajput Lion]

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.

You talking about IN's LRMFR, bro?

Can someone explain 3 rd modification?
@Rajput Lion

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

 

[marich01]

Yeah most likely that LRMFR aaau, dimensions match. Testing to begin after the jigs are made.

 

[Gautam]

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.

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.

 

[marich01]

Wonder what spec would the new LRR, VLRTR be as that would be replacing the swordfish etc.
( pic: LRDE )

 

[Ashwin]

Lanza replacement in works.