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4/16/2014 Aesa Radars - Future of Air Combat.
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Aesa Radars - Future of Air Combat.
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17-08-09, 01:12 PM
Options open to India at present-
1.APG-79 [F-18 Hornet E\F]
2.APG-80 [F-16 Block 70]
3.ZHUK-AE [Mig-35]
4.Captor-AESA [Euro Fighter Typhoon]
5.RBE-2 AESA [Rafale]
6.NORA [Gripen NG]
7.Elta 2052 [LCA]
8.Irbis-E AESA [Su-30MKI] - There are rumors about an aesa version of
Irbis-E PESA being developed for Su-30MKI upgrade.
Just go through this articles.
Defunct Humanity
Defunct Humanity: AESA radars for fighters. Brief review.
#1
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17-08-09, 01:23 PM
8.Irbis-E AESA [Su-30MKI] - There are rumors about an aesa version of Irbis-E PESA being developed for Su-30MKI
upgrade.
the rumours have settled down mate, its official the new AESA to be open for public viewing on active mode at MAKS 2009
please check the maks 2009 thread for detail
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17-08-09, 01:28 PM
the rumours have settled down mate, its official the new AESA to be open for public viewing on active mode at MAKS 2009
#3
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4/16/2014 Aesa Radars - Future of Air Combat.
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please check the maks 2009 thread for detail
A.V. ↑
That's great ...... 230 MKI's with AESA radar,a deadly force...
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17-08-09, 01:30 PM
the radars are not yet fitted into the mki my friend it is meant for future upgrades and also for the PAKFA
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17-08-09, 01:33 PM
the radars are not yet fitted into the mki my friend it is meant for future upgrades and also for the PAKFA
A.V. ↑
Ya i know....They are meant for MLU which might begin in 2011-2012 as the 1st MKI was inducted in 2002
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17-08-09, 03:26 PM
why isnt the SABR by northrop-grumman not shown here?
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17-08-09, 11:17 PM
I am sure you have all heard about AESA and while all of us understand that it is an important piece of technology, many of
us don't understand what makes AESA radar's good. Well, I hope the following information will help you guys better
understand what AESA is and what makes it so good.
So basically, AESA stands for Active Electronically Scanned Array. In an AESA radar the transmitter and the receiver are
composed of numerous small T/R modules. AESA radar has instantaneous scanning that have low probability of intercept.
They have simple designs because they require no hydraulics or hinges for antenna movement. Its less infrastructure and
with no motion so it is cheaper to maintain. Some more main advantages are that they have extremely fast scanning, multiple
target tracking, can also function as a radio jammer and the low probability of interception.
AESA radars offer significant gains in reliability. By focusing power at specific directions, the pilot can gain more detection
range providing "first detect" for air-to-air engagements, enabling first shoot/first kill by missiles fired Beyond Visual Range
(BVR) mode. The longer standoff range also allows more time for persistent target observation, information sharing, tactical
analysis and commander assessment before critical decisions are made.
The Russian company Phazotron unveiled the Zhuk AE AESA radar installed on the MiG-35AESA radars are emitting not only
radar signals, but can also be employed for non traditional ISR, as well as electronic attack. For example, some of the
elements can transmit and receive signals modulated with datalink waveform, transferring large amounts of data (such as live
video or aerial imagery) over high bandwidth datalinks. Similar techniques can be used for electronic attack, to jam or deceive
electronic systems operated by enemy forces.
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The mechanical scanning systems used in previous systems were prone to failures, which grounded the entire aircraft. The
new systems use solid-state technology and electronic scanning, to replace the mechanical systems but also introduce
multiple elements to replace the single channel design of previous systems. Therefore, AESA radars can sustain certain
degree of failure without grounding the aircraft or disabling the entire radar system. Furthermore, when designed with
modular approach, AESA radars can be gradually upgraded, by replacing the solid-state receive/transmit modules based on
Gallium-arsenide semiconductors technology with more advanced elements, thus significantly improving performance.
AESA radars have
* High ECM resistance:
o The extremely fast scan of the radar makes it difficult for an ECM device to find the correct azimuth and elevation in which
the radar's main lobe is currently directed.
o High gain associated with AESA radars gives them high ERP, which makes it difficult for an active ECM device, using noise
jamming techniques, to successfully jam such a radar.
* The extremely fast scan of the emitter gives it LPI features.
* Less susceptibility to voltage failures, due to the relatively very low voltage in which each and every single radiating element
operates; This is combined with graceful degradation.
AESA VS PESA
PESA
In a passive electronically scanned array (PESA), the microwave feed network in the back of the antenna is driven by a single
high-power Radio frequency(RF) source (transmitter), sending its waves into phase shift modules (usually digitally-
controlled), which, in turn, feed the transmitting/receiving elements.Using beam steering they provide stealth, interleaving
modes and reliability. However, the shift in phase of the radar signal comes at a cost. High-power phase control leads to
losses in the signal and a consequent reduction in radar sensitivity. Typical total losses in early systems resulted in a factor
of 10 reductions in radiated power; in modern systems these losses are still in the factor of 5 ranges.
Electronic steering and shaping of a beam provides unprecedented beam agility - beam shape and direction can be digitally
controlled by a computer within a matter of tens of milliseconds. Such beam agility makes it possible for one phased array
radar to act as multiple radars each with its own beam shape and scan pattern! This is referred to as interleaving radar
modes. The same radar can be tracking for airborne threats using one beam shape and scan pattern while searching for
ground targets using another beam shape and scan pattern.
The Russian NIIP N-011M Bars radar fitted on the Su-30MKI and the NIIP Bars-29 radar proposed to be fitted on the MiG-
29M2 being offered to the IAF are examples of phased array radars
AESA
An AESA, instead, has an individual RF source for each of its many transmitting elements. This provides for a graceful
degradation, so that many T/R(transmitter-receiver) modules may fail and the radar would not stop functioning. AESA
employs a grid of hundreds of small (TR) modules that are linked together by high-speed processors. Each TR module has
its own transmitter, receiver, processing power, and a small spikelike radiator antenna on top. The TR module can be
programmed to act as a transmitter, receiver, or radar. The TR modules in the AESA system can all work together to create a
powerful radar, but they can do different tasks in parallel, with some operating together as a radar warning receiver, others
operating together as a jammer, and the rest operating as a radar. TR modules can be reassigned to any role, with output
power or receiver sensitivity of any one of the "subsystems" defined by such temporary associations proportional to the
number of modules.
AESA provides 10-30 times more net radar capability plus significant advantages in the areas of range resolution,
countermeasure resistance and flexibility. In addition, it supports high reliability / low maintenance goals, which translate into
lower lifecycle costs. Since the power supplies, final power amplification and input receive amplification, are distributed, MTBF
is significantly higher, 10-100 times, than that of a passive ESA or mechanical array. This results in higher system readiness
and significant savings in terms of life cycle cost of a weapon system, especially a fighter.
CONCLUSIONS
So, in summary A PESA radar is simpler to construct than an AESA. However, they both their drawbacks. Due to the heat
generated by these devices, there has to be a very good cooling system on board to make sure that they don't fry
themselves. In addition, another problem is that they have a somewhat limited range. With that said, this is really not a big
concern right now because of the fact that the majority of the countries that use these radars have a well built network of
Land based radar in addition to AWACS support. This will help overcome the shortages of AESA and the PESA radars.
With that said, The advantages of AESA and PESA are numerous - they can scan an area much faster (miliseconds
4/16/2014 Aesa Radars - Future of Air Combat.
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compared to seconds), their signals are much harder to detect, and some advanced AESA models can scan, track and even
work as a jammer at the same time. Advanced versions can also scan for air and ground targets at the same time in addition
to tracking much more targets than normal radar. With that said, AESA is the future of radar technology as it offers features
that cannot be matched by any other radar platform. Its combination of high durability and its potential for tremendous multi-
tasking makes it an attractive options for countries that seek to build a modern air force.
Like I have already stated, AESA radars are remarkably good at multi tasking. In addition to emitting radar signals, then can
also be employed for non traditional ISR, as well as electronic attack. For example, some of the elements can transmit and
receive signals modulated with datalink waveform, transferring large amounts of data (such as live video or aerial imagery)
over high bandwidth datalinks. Similar techniques can be used for electronic attack, to jam or deceive electronic systems
operated by enemy forces.
The mechanical scanning systems used in previous systems were prone to failures, which grounded the entire aircraft. The
new systems use solid-state technology and electronic scanning, to replace the mechanical systems but also introduce
multiple elements to replace the single channel design of previous systems. Therefore, AESA radars can sustain certain
degree of failure without grounding the aircraft or disabling the entire radar system. Furthermore, when designed with
modular approach, AESA radars can be gradually upgraded, by replacing the solid-state receive/transmit modules based on
Gallium-arsenide semiconductors technology with more advanced elements, thus significantly improving performance.
Reply
17-08-09, 11:19 PM
there is also MMR multi mode radar that will be going in our LCA it uses a combination of AESA AND PESA.
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18-08-09, 01:32 AM
I heard that India deveolped the AESA radar....is that true?
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18-08-09, 02:27 AM
I heard that India deveolped the AESA radar....is that true?
unlimittautar ↑
Not true, we havent developed a fully functional AESA to the best of my knowledge, but we are working on one I am sure, but
it wont be ready anytime soon.
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18-08-09, 09:03 AM
The greatest advantage of AESA radar is that they are not mechanically steared. This reduce detection time of a threat from
50-60 sec in case of PESA to 2-3 sec in case AESA. The radio wave emitted by AESA tend to be more sharper than PESA.
With AESA the band of the radar has become less important to get sharper and clear images as the beam emmited are more
sharper on the other hand the sharpness of image for PESA depend on the band. AESA radar can operate on different
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frequencies even different bands simultaniously but PESA can't.
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18-08-09, 01:13 PM
The greatest advantage of AESA radar is that they are not mechanically steared. This reduce detection time of a threat from
50-60 sec in case of PESA to 2-3 sec in case AESA. The radio wave emitted by AESA tend to be more sharper than
PESA. With AESA the band of the radar has become less important to get sharper and clear images as the beam emmited
are more sharper on the other hand the sharpness of image for PESA depend on the band. AESA radar can operate on
different frequencies even different bands simultaniously but PESA can't.
Dark Sorrow ↑
True, in the case of advanced AESA like apg-79 the time between initial detection to target track to full target vector takes
microseconds per aircraft and within 10 seconds the radar can track over 20 aircraft.
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18-08-09, 01:30 PM
Options open to India at present-
1.APG-79 [F-18 Hornet E\F]
2.APG-80 [F-16 Block 70]
3.ZHUK-AE [Mig-35]
4.Captor-AESA [Euro Fighter Typhoon]
5.RBE-2 AESA [Rafale]
6.NORA [Gripen NG]
7.Elta 2052 [LCA]
8.Irbis-E AESA [Su-30MKI] - There are rumors about an aesa version of Irbis-E PESA being developed for Su-30MKI
upgrade.
Just go through this articles.
Defunct Humanity
Defunct Humanity: AESA radars for fighters. Brief review.
venom ↑
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The figures of radar ranges are a bit in-accurate, the APG-79 has a max detection range over 500km and can track a 1m2
target well over 185 km and allows the SH to deploy the aim-120D at nearly maximum range of 210 km against a non-
maneuvering target and destroy it. Apg-79 is second only to the APG-77 in terms of ranges and radar resolution and the
radar has over 1200 T/R modules, RBE-2 AESA and CEASAR too has over 1000T/R modules. RBE-2 AESA is very accurate
as well however max. range is below 300km, US radars also boast longer MTBFs are fully combat proven. Northrop is now
requesting the US govt. to clear the SABR for export so that it can offered on the Euro fighter and Gripen NG, if indeed it is
cleared we could get the SABR on T-3 Efs, as of yet no details on the SABR or RACR. APG-80 has a max detection range of
over 220 NM or well over 420km. Apg-79 allows the SH to pull AWACS roles and control over 36 aircraft in battle.
Reply
18-08-09, 04:52 PM
The figures of radar ranges are a bit in-accurate, the APG-79 has a max detection range over 500km and can track a 1m2
target well over 185 km and allows the SH to deploy the aim-120D at nearly maximum range of 210 km against a non-
maneuvering target and destroy it. Apg-79 is second only to the APG-77 in terms of ranges and radar resolution and the
radar has over 1200 T/R modules, RBE-2 AESA and CEASAR too has over 1000T/R modules. RBE-2 AESA is very
accurate as well however max. range is below 300km, US radars also boast longer MTBFs are fully combat proven.
Northrop is now requesting the US govt. to clear the SABR for export so that it can offered on the Euro fighter and Gripen
NG, if indeed it is cleared we could get the SABR on T-3 Efs, as of yet no details on the SABR or RACR. APG-80 has a
max detection range of over 220 NM or well over 420km. Apg-79 allows the SH to pull AWACS roles and control over 36
aircraft in battle.
John ↑
Purchasing F-18 & F-16 will be the biggest mistake.....
I agree that both the American fighters are very capable but the only drawback is that they are American...In case of war if US
applies sanctions what are the options left with us?
US just uses other countries for its strategic objectives like it did with Pakistan during the afghan war.Pakistan got all the
goodies when the war was on but once it was over even the paid F-16's were witheld.
Its better we go for Rafale,Mig-35 or Typhoon.
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21-08-09, 07:47 AM
http://forum.sukhoi.ru/attachment.ph...6&d=1250804385
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