Radar - Specs & Discussions

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Mort Walker
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Re: Radar - Specs & Discussions

Post by Mort Walker »

^^^It would be very interesting to see what sort of pulse widths they can generate with these newer GaN designs.
brar_w
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Re: Radar - Specs & Discussions

Post by brar_w »

Yeah, I don't think they'll reveal many details on either proposals. From what we know, Northrop Grumman has been flight testing and demonstrating its prototype sensor for a number of years now, and Raytheon is expected to have its design based on the Navy's AAS which it is currently integrating on the US Navy P-8A.
Karan M
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Re: Radar - Specs & Discussions

Post by Karan M »

Two very interesting new radar programs from LRDE have publicly emerged (public domain).

One is an Adaptive Radar Test Bed. Basically adaptive algorithms that can dynamically change to finesse performance.

Another is a Dual Panel Long range Multi function radar. IMHO, this is either a testbed for a proper 4 panel one (eg Naval applications like the Barak-8 unit) OR a testbed for a BMD oriented system. Time will tell.

Both appear to be AESA units.

Either ways, as predicted by yours truly, DRDO has the building blocks in place for long range systems and advanced systems and is moving on that path.
Neela
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Re: Radar - Specs & Discussions

Post by Neela »

Armenia interested in purchasing Radars from India.
Thakur_B
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Re: Radar - Specs & Discussions

Post by Thakur_B »

Karan ji, that sounds like BMD radar. Swordfish is just a customised green pine, so after MPR and AWACS, it would be the logical next step.
Gyan
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Re: Radar - Specs & Discussions

Post by Gyan »

RE KARAN

AN updated of all Radar programmes will be very welcome like your missile list.
shaun
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Re: Radar - Specs & Discussions

Post by shaun »

Image
Image

Please ID those radars ?? with IAF 740 Signal Unit
srin
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Re: Radar - Specs & Discussions

Post by srin »

What's the source of these images ?
shaun
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Re: Radar - Specs & Discussions

Post by shaun »

srin wrote:What's the source of these images ?
i have hosted those images. Are those Tropospheric Scatter Communications Systems ??
Karan M
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Re: Radar - Specs & Discussions

Post by Karan M »

Its a tropo scatter system.

Meanwhile, there is yet another new radar, the mountain radar - from the below, likely variant of Aslesha Mk-2.
http://www.aeromag.in/Magazines/9338378845.pdf
BEL’s Chennai Unit manufactures
the Compact Multipurpose Advanced
Stabilised Platform (CoMPASS), which is
a highly stabilised, multi-sensor, electro-
optical payload having Electro Optic
elements like Thermal Imager, Colour TV
Camera, Laser Range Finder/Designator.
Till now, the Unit has supplied these
systems for Advanced Light Helicopter
and Mi 17 platforms.
In the field of radars, BEL has successfully
inducted Rohini’s variant 3D-Tactical
Control Radar in the Indian Army and
Revathi in the Indian Navy. Similarly, the
3-D portable radar, Aslesha, is a great
success. BEL has secured business of
its variant called Bharani-II. BEL is also
developing the mountain version of
Aslesha radar, Aslesha Mk-II.
New developments with DRDO are
in the field of 4 Dimensional, Medium
Range, Fully Active Phased Array Radars
like Arudhra Radar, Mountain Radar
and Ashwini Radar. BEL is also working
with Thales through the Joint Venture
Company, BEL Thales Systems Limited,
on the development of Long Range High
Power Radar and Multi Function Radar,
Pharos.
BEL has added another feather to its
cap with the development and successful
trials of Weapon Locating Radar (WLR),
a field artillery radar system capable of
locating enemy artillery batteries or shell-
firing guns, mortars and rocket launchers
with great precision and guiding own
artillery fire to neutralise the enemy
targets.
srin
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Re: Radar - Specs & Discussions

Post by srin »

Is the Pharos a replacement for Flycatcher radar ?
ks_sachin
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Re: Radar - Specs & Discussions

Post by ks_sachin »

Karan M question...

I was reading up on Aslesha (3d) and Bharani..

The Bharani (2D) is being used by the AAD.
ASlesha is for the IAF.

Both of them have more or less the same function..low level intrusion detection.

So why a 3d version for IAF and 2D version for AAD?
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Re: Radar - Specs & Discussions

Post by Mort Walker »

Design trade offs based on mission requirements and cost.

The Bharani is for low velocity targets such as UAVs and helos. Primarily for detection and less for tracking. It has a beam that is 6 deg AZ and 35 deg EL. The Aslesha is an S-band phased array, with a pencil beam that is accurate for tracking fast moving targets. Since these are low cost light-weight systems they could be networked together where the Bharani could make a quick detection and the Aslesha would then track accurately.
ks_sachin
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Re: Radar - Specs & Discussions

Post by ks_sachin »

Mort Walker wrote:Design trade offs based on mission requirements and cost.

The Bharani is for low velocity targets such as UAVs and helos. Primarily for detection and less for tracking. It has a beam that is 6 deg AZ and 35 deg EL. The Aslesha is an S-band phased array, with a pencil beam that is accurate for tracking fast moving targets. Since these are low cost light-weight systems they could be networked together where the Bharani could make a quick detection and the Aslesha would then track accurately.

Thank you kind Sir.
Karan M
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Re: Radar - Specs & Discussions

Post by Karan M »

Sachin saar they saw the Aslesha and now want a 3D radar. So after Bharani Mk1, there is now a Bharani Mk2 which is none other than an AAD version of Aslesha for Army, its 3D etc. Basically, the main advantage of Bharani was a lighter antenna, but the heightfinding advantage of the Aslesha and its more precise features (as Mort pointed out) means the Army is now moving over to Bharani Mk2/Aslesha.
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Re: Radar - Specs & Discussions

Post by Vips »

[url=tps://economictimes.indiatimes.com/news/defence/nirmala-sitharaman-gives-fillip-to-indigenisation-approves-rs-5500-crore-proposals/articleshow/64496890.cms]Nirmala Sitharaman gives fillip to indigenisation, approves Rs 5500 crore proposals.[/url]
The Defence Acquisition Council (DAC) which was chaired by the minister, cleared the procurement of 12 High Power Radars for the Indian Air Force along with Air Cushion Vehicles (ACVs) for the Indian Coast Guard and Indian Army from Indian Shipyard

In a statement issued by the government, the radars will provide long range medium and high altitude radar cover with the capability to detect and track high speed targets following parabolic trajectories. These technologically superior radars will have the capability to scan 360 degree without mechanical rotation of Antenna and will operate on 24 x 7 basis with minimal maintenance requirements.
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Re: Radar - Specs & Discussions

Post by ArjunPandit »

^^OT: Air cushion vehicles: Is that another way of saying a hovercraft? ..many years back I used to dream of IA/IN landing on karachi to avenge 26/11 when a nationalistic govt would be in power
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Re: Radar - Specs & Discussions

Post by pravula »

ArjunPandit wrote:^^OT: Air cushion vehicles: Is that another way of saying a hovercraft? ..many years back I used to dream of IA/IN landing on karachi to avenge 26/11 when a nationalistic govt would be in power
Yep, https://en.wikipedia.org/wiki/Hovercraft
A hovercraft, also known as an air-cushion vehicle or ACV, is a craft capable of travelling over land, water, mud, ice, and other surfaces. Hovercraft are hybrid vessels operated by a pilot as an aircraft rather than a captain as a marine vessel.
Kakarat
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Re: Radar - Specs & Discussions

Post by Kakarat »

https://twitter.com/kakarat2001/status/ ... 6509325312

Brochure of LRDE AESAR from Defexpo2018 showing AESA Radar test integration with LCA Tejas

Image
Image
JTull
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Re: Radar - Specs & Discussions

Post by JTull »

Thanks. Didn't mean to steal your thunder (on LCA thread).

Seems everyone missed this at the DefExpo.
Last edited by JTull on 11 Jun 2018 15:40, edited 1 time in total.
Kersi
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Re: Radar - Specs & Discussions

Post by Kersi »

shaun wrote:
srin wrote:What's the source of these images ?
i have hosted those images. Are those Tropospheric Scatter Communications Systems ??
YES
Kersi
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Re: Radar - Specs & Discussions

Post by Kersi »

shaun wrote:
srin wrote:What's the source of these images ?
i have hosted those images. Are those Tropospheric Scatter Communications Systems ??
Just a bit of nit picking. It is Tropo scatter communications
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Re: Radar - Specs & Discussions

Post by Kersi »

ArjunPandit wrote:^^OT: Air cushion vehicles: Is that another way of saying a hovercraft? ..many years back I used to dream of IA/IN landing on karachi to avenge 26/11 when a nationalistic govt would be in power
Aap ke muh main ghee shakar
Kakarat
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Re: Radar - Specs & Discussions

Post by Kakarat »

JTull wrote:Thanks. Didn't mean to steal your thunder (on LCA thread).

Seems everyone missed this at the DefExpo.
No issues

This was one of the first Brochure i picked up and not many were there, I have a lot more to share but unable to do because of issues in my PC
Karan M
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Re: Radar - Specs & Discussions

Post by Karan M »

Woo hoo. The HPR is from LRDE. MOD has gone the local route for the HPR!
HIGH POWER RADAR (HPR)

1. Description of Technology: The HPR is an Active Aperture Phased Array Radar based on Solid State Trans-Receive Modules. The Active Phased Array technology allows electronic scanning in azimuth as well as elevation. These radars have non-rotating design with planar arrays and provide 360 degrees coverage without the requirement of mechanical rotation. There is seamless transition of tracks from one planar array to another planar array. The HPR is able to detect targets of 2m2 RCS at a distance of 450 Km. The radar is to classify targets automatically and it has ECCM features.It is able to resolve target in four dimensions (4D) namely Range, Azimuth, Height and Doppler Velocity. The radar is equipped with ICAO & STANAG 4193 compliant IFF system with provision to operate independent of primary radar.

2. Installation and Maintenance aspect The Radar will be installed and integrated at the deployment site. It is capable of being sited up to an altitude of 3000m Above Mean Sea Level. It can withstand severe environment conditions.The HPR would be able to operate on a 24x7 basis with low maintenance requirements and will be integrated in the IACCS Network of IAF.

3. Performance evaluation The Field trials of the radar in integrated mode will be carried out at deployed location, to meet each parameters of the Radar Specification.

4. Realization Approach The design of radar is based on proven technology available with LRDE.

5 HPR – Four Wall Physical Configuration The illustrative picture of static four-wall physical configuration of HPR is shown as below
Image
Image

https://www.business-standard.com/artic ... 303_1.html
Purchase of 12 indigenous high-power radars approved
IANS | New Delhi Last Updated at June 7, 2018 20:15 IST

The government on Thursday approved the procurement of indigenously designed and developed defence equipment worth Rs 5,500 crore which include 12 high-power radars to detect missile threats in high altitude areas.
The approval to buy the 'India-designed, developed and manufactured (IDDM) equipment was given at the Defence Acquisition Council (DAC) meeting chaired by Defence Minister Nirmala Sitharaman

"Pursuing the goal of indigenization and self-reliance in the field of defence procurements, the DAC approved procurement of 12 high-power radars for the Indian Air Force," a defence spokesperson said in a statement.


The radars will provide long-range, medium- and high-altitude cover while detecting and tracking high-speed airborne targets following parabolic trajectories.

Technologically superior, the radars will have the capability to scan 360 degrees without mechanical rotation of antenna and will operate on 24X7 basis with minimal maintenance requirement.

"Their procurement will enhance the overall efficacy of the air defence network in the country," the statement said.
The Air Force had already specified that it would need radars with a capability to detect and track targets at 30-km altitude that can be deployed in high altitude areas and can counter electronic warfare and anti-radiation missiles.

The IAF possesses low to long range radars but is looking to modernize the air defence system of the country. Currently, the force uses a a mix of Russian and French systems like Thales radar which has 600 km range but has been in service for some decades.
The IAF is also looking to acquire Russian S-400 anti-aircraft missile defence system.

The acquisition council also accorded approval for procurement of hovercraft or air-cushion vehicles (ACVs) for the Indian Coast Guard and Indian Army.
These vessels would offer advantage over conventional boats and crafts. The air-cushion vehicles come with an ability to travel at very high speeds over shallow water, sand banks, mud-flats and swamps which are non-navigable by boats and small crafts.
"These (hover)craft offer capability enhancement for the services and would prove useful for amphibious and riverine operations, especially where there is a requirement to move men and material from one island to another island, across riverine terrain, creeks."
--IANS
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)
Picklu
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Re: Radar - Specs & Discussions

Post by Picklu »

Karan M wrote: ....
HIGH POWER RADAR (HPR)

......

The radars will provide long-range, medium- and high-altitude cover while detecting and tracking high-speed airborne targets following parabolic trajectories.

Technologically superior, the radars will have the capability to scan 360 degrees without mechanical rotation of antenna and will operate on 24X7 basis with minimal maintenance requirement.
In other words, BMD radar.

Karan M wrote: .........
The acquisition council also accorded approval for procurement of hovercraft or air-cushion vehicles (ACVs) for the Indian Coast Guard and Indian Army.
These vessels would offer advantage over conventional boats and crafts. The air-cushion vehicles come with an ability to travel at very high speeds over shallow water, sand banks, mud-flats and swamps which are non-navigable by boats and small crafts.
"These (hover)craft offer capability enhancement for the services and would prove useful for amphibious and riverine operations, especially where there is a requirement to move men and material from one island to another island, across riverine terrain, creeks."
...
Closing the gaps in the border.
Karan M
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Re: Radar - Specs & Discussions

Post by Karan M »

Picklu saar,

Regular HPR + 2ndary BMD role.

Replacing THD-1955 with a desi-AESA, high reliability!

http://www.aeromag.in/articlesingle.php?article=8

BEL has been upgrading and maintaining these 40 year old systems.
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Re: Radar - Specs & Discussions

Post by Karan M »

https://sputniknews.com/asia/2017040710 ... er-israel/
New Delhi (Sputnik) — Under the tender, Israel Aerospace Industries (IAI) will supply 66 new-generation 3-D surveillance and tracking radar to the Indian Army under technology transfer. The radar has been developed by Elta especially for the Indian Army. The closest rival was Thales from Netherlands.

The radar will be equipped to track wide variety of platforms including low-level high-speed fighter aircraft, hovering helicopters, low ultra-light aircraft and UAVs.

Indian Army will operationalize these high mobility and low power consuming radars in difficult Himalayan terrain bordering Pakistan and China. Indian Army has asked for radars which can provide accurate range, azimuth and elevation angle measurements for each target, and capable of differentiating between different type of threat.

The Elta radar will track multiple targets in all weather conditions and its most important feature is its ability to be deployed fast. It will replace Flycatcher Radar which was manufactured in collaboration with HSA and supplied to the army in 1987
India continues its dual-sourcing strategy. Atulya ADFCR is now entering advanced trials. It has cleared DRDO evaluation.

Meanwhile, we have the imported ADFCRs come in.

Why is this not a big deal? Because total inventory of Flycatcher + Reporter is over 300 units, and the deal with Israel is only for 60 odd units, and the rest will be met by Atulya.

The Israeli radar is likely this.
http://www.iai.co.il/2013/36563-44496-e ... Lines.aspx
Karan M
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Re: Radar - Specs & Discussions

Post by Karan M »

Astra MWP already has UHF band TXRX modules, I wonder what's stopping LRDE from making an UHF based AESA for GBAD and the IAF from asking for one. Its a quick and simple solution to dealing with J-XXs optimized for high band RCS reduction.
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Re: Radar - Specs & Discussions

Post by jaysimha »

HIGH POWER RADAR (HPR)
Electronics and Radar Development Establishment (LRDE), a premier lab under DRDO has
developed state-of-art Radar systems and associated Technologies. LRDE is seeking
Expression of Interest (EOI) from prospective bidders/recipient for Transfer of Technology in the
area of Radars. https://www.drdo.gov.in/drdo/English/II ... -radar.pdf
souravB
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Re: Radar - Specs & Discussions

Post by souravB »

Please don't go by the name of the video.
After about 2 mins Dr. S. Christopher is talking about Radars.
Here he confirmed that GaN foundry is already up and running.


at 3:20 minute mark, he also confirmed that GaN T/R modules for X-band radars are already available with them and are being produced.
So can we say that the production version or a very quick revision mk-II of Uttam is going to have GaN modules?
can we start the lungi dance yet? :D
Karan M
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Re: Radar - Specs & Discussions

Post by Karan M »

Sourav, great find. IMHO, he is referring to the current GaAs X-band TRMs in mass production for Uttam, QRSAM etc which are at the desired 10W range. The GaN process is yet to be fully established for S-Band for cost-effective replacement (at 40W as versus 110W desired) so the X-Band will follow thereafter.
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Re: Radar - Specs & Discussions

Post by Eric Leiderman »

https://economictimes.indiatimes.com/in ... 863155.cms

More details of the Gallium Nitride foundry
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Re: Radar - Specs & Discussions

Post by arun »

Bharat Electronics Ltd (BEL) press release regards Long Range Air Surveillance L Band three dimensional (3D) Radar , RAWL-03. This radar is based on Gallium Nitride / GaN TR Module technology:
BEL signs MoU with Saab, Sweden

Bangalore, July 16, 2018: Navratna Defence PSU Bharat Electronics Ltd (BEL) has signed a Memorandum of Understanding (MoU) with Saab, Sweden, recently for jointly marketing the L-Band 3D Air Surveillance Radar, RAWL-03, co-developed by BEL and Saab.

BEL has joined hands with Saab, Sweden and USA, to market the Long Range Air Surveillance Radar, a cost-effective L Band three dimensional (3D) radar, for early detection and tracking of air and surface targets, thereby enabling engagement of fire control systems to neutralise the same. RAWL-03 will be offered in both ship-borne and land-based configurations. The system is based on the state-of-the-art GaN TR Module technology and incorporates the latest Signal Processing techniques.

Saab serves the global market with world-leading products, services and solutions in military defence and civil security. Saab has operations and employees in all continents around the world. Through innovative, collaborative and pragmatic thinking, Saab develops, adopts and improves new technology to meet customers’ changing needs.

BEL, India’s leading Defence electronics Company, is engaged in the design, manufacture and supply of state-of-the-art Radars like Weapon Locating Radar and Battle Field Surveillance Radar, Communication Systems, C4I systems, Naval Systems, Electronic Warfare Systems, Missile Systems, Night Vision Devices and other Electro Optic Systems, Tank Electronics and Gun/Weapon System Upgrades, Coastal Surveillance System, etc, for the armed forces.

Bharat Electronics Press Release
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Re: Radar - Specs & Discussions

Post by ashthor »

The Electronics and Radar Development Establishment (LRDE) has said that it is ready with its “Active Electronically Scanned Array Radar (AESAR)” technology and has four licenses to offer to the Indian industry. The lab has asked interested companies to submit their profiles to apply for the project.
More at:
https://economictimes.indiatimes.com/ne ... content=23
nam
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Re: Radar - Specs & Discussions

Post by nam »

Hope this is picked up. We need to produce AESA and bring out solutions based on it like pancakes. Bring the price down and export radars by private companies. AESA radars are still considered TFTA and US & Europeans have a strangle hold on exports.
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Re: Radar - Specs & Discussions

Post by Rakesh »

https://twitter.com/strategic_front/sta ... 8752748546 ---> DRDO lab LRDE is seeking Expression of Interest (EOI) from prospective companies who would like to build AESA radars under Transfer of Technology (ToT).

Image
Kersi
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Re: Radar - Specs & Discussions

Post by Kersi »

I am confused. Is 3D-CAR and Rohini the same radars ? I believe that Rohini (IAF) and Revathi (IN) are very similar if not the same.
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Re: Radar - Specs & Discussions

Post by Karan M »

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.
Karan M
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Re: Radar - Specs & Discussions

Post by Karan M »

DRDO's EOI for private partners to take TOT for Uttam and derivatives. Huge step forward for Indian industry.

https://www.drdo.gov.in/drdo/English/II ... riteup.pdf
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