Indian AESA Radar Developments

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NAL's effort on the avionics and AESA radar domain :
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It's pretty evident that we've made stellar progress in the AESA radar department. A few years back we had nothing and now everybody is making AESA radars, GaN transistors and so on. I think collaboration with the Israelis in the swordfish radar and other such projects has paid off in spades. Now we have to maintain this tempo if not improve on it to build a steady advantage.
 
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Not defence related but still significant.

Data Patterns-developed STR.jpg

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The Stratosphere Troposphere Radar facility on the Thrikkakara campus of Cochin University of Science and Technology(CUSAT). Setup to study wind and cloud patterns and monsoon data gathering and prediction at the cost of Rs. 20 crores, their work impressed the Meteorological Department(IMD) so much that they ended up getting Rs. 242 crores for expansion of the facility. 100 crores to be used for infrastucture expansion, the rest for acquisition of more equipment, hiring staff etc.

Data Patterns-developed PAR using AESA Arrays.jpg

This company, DATA PATTERNS, is one to look out for. They already do a truck load of work for the military, the Bramos missile seeker was designed and is manufactured by them. The way they are going, they might actually end up becoming a Raytheon like company.
 
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Gautam said:
The way they are going, they might actually end up becoming a Raytheon like company.
Click to expand...
The resident optimist's post is already taken. I don't think people here encourage such attempts at replacement as is observed in Karnataka at the moment. Mind it!
 
Alpha Defence Technonologies Ltd.(ADTL) is making something that they call "AESA Radar".
No description of it is available, just a picture.
This is a really poor quality image but this is the best we have right now.
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As I have said before, I have very poor eyesight. Here is what I read from it, please do correct me if I am wrong.

"
Size : 6.0 x 2.0 x 0.2 metres(Length x max. Breadth x Thickness)
Weight : 244 Kg
Platform tolerance : o_O I can't read that
"

Anybody want to make guesses on what this is and where it goes in ?

Here is my guess :

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Not new, but since it wasn't posted :

Prototype of DRDO Air Defence Tactical Control Radar (ADRCR).
It is under development currently. Hope to see some positive progress soon.

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I feel the range is somewhat understated. The primary radar on the Netra AEW&C can identify targets at 475 kms. That radar's radiating element is shorter but longer than the ADTCR radiating element, the overall surface area should be very close to each other. Yet somehow the ADTCR has a range of 90 kms only. Maybe its just me.:confused:

By the way what was the advertised range of the primary radar on the Netra when it came up ?
 
Gautam said:
Alpha Defence Technonologies Ltd.(ADTL) is making something that they call "AESA Radar".
No description of it is available, just a picture.
This is a really poor quality image but this is the best we have right now.
View attachment 8207
As I have said before, I have very poor eyesight. Here is what I read from it, please do correct me if I am wrong.

"
Size : 6.0 x 2.0 x 0.2 metres(Length x max. Breadth x Thickness)
Weight : 244 Kg
Platform tolerance : o_O I can't read that
"

Anybody want to make guesses on what this is and where it goes in ?

Here is my guess :

View attachment 8209View attachment 8210View attachment 8211View attachment 8212View attachment 8213
Click to expand...

Your guess is my guess too.

For a 10.5m radome, the array will be less than 7.5m. So 6m sounds about right.
 
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lr.JPEG


A new iteration of LRTR

Pic is low quality but one can note the 3 panels , 1 primary and 2 secondary

This feature not available in current LRTR
 
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ISRO's CY-1 satellite had a payload called MiniSAR, featuring GaN-based X-band TRM

Dual-band Synthetic Aperture Radar (DFSAR)

DFSAR is a lightweight radar operating in S and L band (used for the first time on the moon). It's a follow-up of MiniSAR experiment of Chandrayaan-1. MiniSAR was an S-band synthetic aperture radar supplied by NASA. Weight and power are always constraining factors when it comes to planetary missions. The entire SAR instrument package of C2 orbiter weighs only 15 kg. To ensure high efficiency, the transmitter package of the radar uses Gallium Nitride (GaN) based solid-state power amplifier (SSPA) chain. The transmit chain feeds to a planner-microstrip array antenna of dimensions 1.35x1.1 m. The antenna is capable of transmitting in both L and S bands simultaneously. DFSAR has a maximum resolution of 2 meters from varying incidence angles. The SAR data provided by DFSAR instrument will facilitate the study of surface and subsurface properties of the lunar regolith. Furthermore, high ground-penetration capability of L-band frequencies will be useful for subsurface water-ice detection and estimation.

ISRO's Space Application Centre (SAC) has been quite successful in development of GaN-Based synthetic-aperture radars, for example- NISAR dual-band SAR satellite which is being jointly developed by ISRO and NASA is going to feature SAC-developed S-band SAR module. NISAR's S-band SAR module uses GaN-based TRMs developed in India. NASA will provide L-band SAR. Both L and S band modules of NISAR will share a unfurlable reflector of 12 meter diameter. Another SAC project that features GaN SSPA is Airborne MiniSAR (not to be confused with Chandrayaan-1 MiniSAR) - an X-band lightweight SAR being developed for airborne high-resolution imaging applications.
 
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