Radar - Specs & Discussions

The Military Issues & History Forum is a venue to discuss issues relating to the military aspects of the Indian Armed Forces, whether the past, present or future. We request members to kindly stay within the mandate of this forum and keep their exchanges of views, on a civilised level, however vehemently any disagreement may be felt. All feedback regarding forum usage may be sent to the moderators using the Feedback Form or by clicking the Report Post Icon in any objectionable post for proper action. Please note that the views expressed by the Members and Moderators on these discussion boards are that of the individuals only and do not reflect the official policy or view of the Bharat-Rakshak.com Website. Copyright Violation is strictly prohibited and may result in revocation of your posting rights - please read the FAQ for full details. Users must also abide by the Forum Guidelines at all times.
Kersi
BRFite
Posts: 149
Joined: 31 May 2017 12:25

Re: Radar - Specs & Discussions

Postby Kersi » 14 Sep 2018 12:35

Karan M wrote:Kersi, Rohini is a derivative of 3D-CAR with some extra local tech and modifications for the surveillance role and the other is a Naval version with a newer antenna specifically meant for the Navy, extra stabilization plus signal processing mods for detecting low flying sea skimming missiles. 3D-CAR was a JV between LRDE and PIT of Poland and both went their own way with their own derivatives. DRDO ended up replacing the antenna, beamformer, put in its own TWT and signal processing, hence its radars today are quite different below the hood, vs the Polish versions.


THANKS for clarifications. I saw 3D CAR / Rohini at an AFB recently. I thought PIT - Poland closed down and LRDE bought all the rights / software etc.

Gyan
BRFite
Posts: 1069
Joined: 26 Aug 2016 19:14

Re: Radar - Specs & Discussions

Postby Gyan » 14 Sep 2018 13:40

Akash Radar System uses three radars

CAR
BSR
Rajendra

Karan, can you indicate what would AESA equivalents of these radars perhaps for Akash NG or 1S?

My Guess:-
BEL MPR ARUDHARA
BEL LLTR
ADTCR

Kersi
BRFite
Posts: 149
Joined: 31 May 2017 12:25

Re: Radar - Specs & Discussions

Postby Kersi » 14 Sep 2018 14:08

Is Rohini associated with any specific SAM ? I guess it will be a surveillance radar at each AFB and major industrial / defence installations

nam
BRFite
Posts: 1455
Joined: 05 Jan 2017 20:48

Re: Radar - Specs & Discussions

Postby nam » 14 Sep 2018 14:46

The equivalent would be ADTCR. However with AESA, you can have multi-function and the latest from Khan is multi-band AESA.

So technically DRDO could create common radar across the SAMs.

brar_w
BRF Oldie
Posts: 6694
Joined: 11 Aug 2016 06:14

Re: Radar - Specs & Discussions

Postby brar_w » 15 Sep 2018 23:21

Dual/Multiband AESAs aren't a new concept (The Ford carrier has one). What is new is the sharing of apertures, operating at different bands of the spectrum within the same antenna. Lockheed has done that with the ARES which can operate at both S band and C band and Northrop has now done it with its airborne radar that can operate in both the X and Ku bands. IIRC Raytheon has also worked on a seeker for the US Army that operates in both the C and X bands.

Karan M
Forum Moderator
Posts: 15546
Joined: 19 Mar 2010 00:58

Re: Radar - Specs & Discussions

Postby Karan M » 16 Sep 2018 04:34

Kersi wrote:Is Rohini associated with any specific SAM ? I guess it will be a surveillance radar at each AFB and major industrial / defence installations


Rohini is a derivative of the 3D CAR which is the surveillance radar for Akash batteries.

Karan M
Forum Moderator
Posts: 15546
Joined: 19 Mar 2010 00:58

Re: Radar - Specs & Discussions

Postby Karan M » 16 Sep 2018 04:38

Gyan wrote:Akash Radar System uses three radars

CAR
BSR
Rajendra


No BSR, just CAR and Rajendra. The low cost BSR option was never exercised and AF/IA went with CAR itself.

Karan, can you indicate what would AESA equivalents of these radars perhaps for Akash NG or 1S?

My Guess:-
BEL MPR ARUDHARA
BEL LLTR
ADTCR


Well, LLTR is a one to one replacement of the CAR with an AESA antenna. So unless range is substantially increased in Akash (to 70km class and above), I dont see why Arudhra a heavy MPR will be used. Instead, a new AESA version of the Rajendra or a new radar like the MFCR on the QRSAM wont be developed as the FCR for the Akash NG.

ADTCR is not replacing the 3D CAR in IA roles but acting as a supplement for the flights with Reporter/ Flycatcher, giving them a 90km range reach, while a substantial improvement, we should remember its a high mobility, reduced footprint version (2 vehicles vs 3 of the CAR) and hence it has but half the range. For a proper Akash ++ sized ranged SAM, the IA would want a radar of corresponding performance, hence I think it will be the LLTR as the medium range version (it exists and is prepackaged in the same footprint as the existing CAR).

And hence, for the Rajendra a replacement system may be developed, a derivative or perhaps a much more compact new system.
This is my surmise.

Gyan
BRFite
Posts: 1069
Joined: 26 Aug 2016 19:14

Re: Radar - Specs & Discussions

Postby Gyan » 16 Sep 2018 11:05

Yes. We need a single vehicle mobile AESA radar as a follow on of Rajendra. Perhaps using half panel of ADTCR to replace PESA panel of Rajendra. Almost like MMSR which has been cancelled or perhaps Like TAR which was downsized version of CAR.

Singha
BRF Oldie
Posts: 63335
Joined: 13 Aug 2004 19:42
Location: the grasshopper lies heavy

Re: Radar - Specs & Discussions

Postby Singha » 16 Sep 2018 11:29

while travelling to chennai, @sriperumbudur, there is a L&T project safety training center on a large campus.
near there i spotted the framework of looked very much like one of the fabled football field size ABM radar, pointing due east .

here https://www.google.com/maps/place/L%26T ... 79.8003705

photos here https://www.lntecc.com/homepage/multisl ... cility.pdf

so we do have the inhouse knowhow to build the infra for such projects including the huge power needs

we need to get cracking on it.

the immense DOn2 radar on moscow linebacking duty http://www.researchingaliensandufos.com ... radar.html

6 maybe needed to create a hemispherical dome around india.

Kersi
BRFite
Posts: 149
Joined: 31 May 2017 12:25

Re: Radar - Specs & Discussions

Postby Kersi » 17 Sep 2018 11:34

Karan M wrote:
Kersi wrote:Is Rohini associated with any specific SAM ? I guess it will be a surveillance radar at each AFB and major industrial / defence installations


Rohini is a derivative of the 3D CAR which is the surveillance radar for Akash batteries.


Is it necessary that if there is a Rohini radar, there must be a Akash SAM battery very nearby to it ? I do not think so. Rohini may be used just for surveillance. For example I saw this Rohini radar at one place but could not see anything remotely associated with Akash SAM.

Kersi
BRFite
Posts: 149
Joined: 31 May 2017 12:25

Re: Radar - Specs & Discussions

Postby Kersi » 17 Sep 2018 11:42

Khalsa wrote:
Karan M wrote:Only on BR can you find uber jingos who can't resist finding out even which truck is towing a radar.

:rotfl: :rotfl: :rotfl: :rotfl:

Love it and Love us all

Chanda Ek, Tarre Anek !!


Are the truck tyres Indian or phoren ???

:rotfl: :rotfl: :rotfl: :rotfl: :rotfl:

Karan M
Forum Moderator
Posts: 15546
Joined: 19 Mar 2010 00:58

Re: Radar - Specs & Discussions

Postby Karan M » 17 Sep 2018 15:57

Kersi wrote:
Karan M wrote:
Rohini is a derivative of the 3D CAR which is the surveillance radar for Akash batteries.


Is it necessary that if there is a Rohini radar, there must be a Akash SAM battery very nearby to it ? I do not think so. Rohini may be used just for surveillance. For example I saw this Rohini radar at one place but could not see anything remotely associated with Akash SAM.


No, the Rohini is an IAF specific surveillance radar derived from the Akash's 3D CAR. Not perforce linked to Akash.
IAF has ordered some 29 Rohinis for surveillance and 8 3D CARS for 8 Akash squadrons - its likely the entire order is Rohini, with the Rohini replacing the 3D CAR for the Akash as it is a more advanced variant in some respects. As of 2017, some 37 had been delivered.

Kersi
BRFite
Posts: 149
Joined: 31 May 2017 12:25

Re: Radar - Specs & Discussions

Postby Kersi » 17 Sep 2018 17:48

I understand that IAF / IN has installed radar(s) on ONGC offshore platform(s). Probably THD 1955 or TRS 2155. It sounds like Star Wars !!

suryag
Forum Moderator
Posts: 3147
Joined: 11 Jan 2009 00:14

Re: Radar - Specs & Discussions

Postby suryag » 17 Sep 2018 18:24

Kersi ji - there are no known sources which mention radars on oil rigs owned by ONGC, please do not speculate with an expectation that someone will refute it and in the bargain drop some tidbits


Return to “Military Issues & History Forum”

Who is online

Users browsing this forum: ravikr and 44 guests