A person with your IQ level is the last i will ever confront with. It is simply no use to give you renounced sources as you seem tho think of Mikhail Pogo fantasy more than anything. Keep imagining kiddo...BARS was state of the art in 90s, not in 2011, get this in your mind. A PESA radar is nothing extra ordinary that cannot be countered why is it so difficult to understand? Ever wonder why so many Western nations never opted for PESA? Rather opted for AESA and wait for maturity? The world does not revolve around your fantasy son, get over your mki funda and face the reality that PAF today is no longer what it was in the lost decade when you inducted MKI and we barely had a handful of blk 15s to counter them.
Another example of your type who rather than making reasonable replies resort to personal attack......let me tell you I don't have any intention to be Mr. Nice here.....merely just to prove my facts over your claims.......feel free to stick with the illusive understanding of yours about EW/ECM.
Taking of Technologies it speaks volumes about you IQ and thinking which determines the supremacy or success of any technological advancement governed by the west.....Ironically USAF itself uses PESA on B-1B Lancer, B-2 spirit and E-3 senetry its top electronic attack and bomber aircrafts.
I guess you'll win The best JF-17 fan boy award any day but that does not makes it exceed its limitations of being a small aircraft which can't house adequate jamming/ECM equipment and provide proper power and cooling for them.
Here are a few parameters which determine Electronic warfare and conter measure of a Radar.
Peak Power (Ppeak) [kW] is the maximum pulsed power the radar can emit. It is limited mostly by the transmitter technology employed, and to a lesser extent, the antenna design. In general, the higher the peak power emitted, to the first order, the better from a range perspective. Peak power is also important in Electronic Warfare terms as it determines the burnthough performance of the radar, or the point at which the energy reflected by a target is greater than the energy produced by the target's defensive jamming equipment. This the point where jamming effectively fails.
Aperture Gain (G) [-] is a measure of the area and efficiency of the antenna employed for transmission and reception. The bigger the aperture gain in a radar, to the first order, the better from a range perspective.
Power Aperture Product (PA or PxA) [Wm2, dBWm2, dBW] in its most commonly used form is calculated by multiplying Peak (or Average) Power x Antenna Area (or Power [dBW] + Antenna Gain [dB] in [dBW]). It is a parameter used by designers to gauge the relative performance of different radar designs. To the first order, the radar with the higher Power Aperture Product or PA will achieve better range, detection and jammer burnthrough performance.
Receiver Noise Figure [-] is a measure of the thermal and shot noise effects which are competing in the radar receiver with intended signals to be received. The lower the noise figure (or 'noise temperature'), the better. Receiver noise figures are generally similar for given generations of radar technology, reflecting the radio frequency transistor types, and antenna configurations used.
In practical terms, to maximise detection range and jammer burnthrough performance, the biggest radars in terms of power and antenna size win over those with smaller antennas and less power.
Leaving detection and tracking range performance aside for a moment, other radar parameters and attributes are also relevant in a combat environment. Unfortunately these capabilities and parameters are often not so easy to compare parametrically, and in many situations are less important than the range and burnthrough performance.
Sidelobe Performance [deciBels] of a radar antenna determines how much energy is emitted in directions other than than intended, and how much energy is detected from directions other than intended. Sidelobe performance is important in rejecting ground clutter when pursuing low altitude targets, and in providing good resistance to jamming. Jammers are often designed to inject false targets into a victim radar via its sidelobes.
Mainlobe Width [degrees of arc] of a radar antenna determines how narrow the main lobe of the antenna radiation pattern is, or in simpler language, how narrow a 'pencil-beam' of microwave energy the radar produces. As the so called 'antenna reciprocity theorem' applies, for a typical antenna design the mainlobe (and sidelobe) parameters are the same for transmitting as they are for receiving. For typical fighter radars, mainlobe widths vary between 4° and 2° of arc. For many applications, the narrower the beam the better, within limits.
Antenna/Receiver/Transmitter Bandwidth is a measure of the radar's potential frequency agility, or its ability to hop across frequencies to evade detection and jamming. Bandwidth is also important for many modes which require wide bandwidth modulations in the signal. These include Low Probability of Intercept (LPI) modes, High Power Jam (HPJ) and high speed datalinking (HSDL) modes.
Signal Processing Performance is a measure of how many computations the radar signal processor can perform per second on the digitised raw radar video signals collected by a receiver. This parameter is often measured in terms of Fast Fourier Transform operations executed per second, or where performance is considered sensitive, in the less revealing measures of MIPS (millions of instructions per second). Signal processing performance will impact the radar's ability to sift targets from noise, jamming and low altitude clutter. A related parameter is the number of receiver channels employed. In digital radars these are usually paired. Again, a larger number of channels is typically better.
Data Processing Performance is a measure of how many computations the radar signal processor can perform per second on the target track data collected by the radar, as well as on computations associated with missile guidance and envelope management. Data processing performance will impact the radar's ability to track large numbers of targets, manage multiple missile engagements, control multiple missiles in flight, and perform other functions important to the managment of the radar's operation.
Beamsteering Agility is a measure of how quickly the antenna mainlobe can be pointed in a different direction, and/or reshaped for a different operating mode. In MSA (Mechanically Steered Antenna) designs this parameter is typically of the order of hundreds of milliseconds. In AESA/ESA (Active / Electronically Steered Antenna) designs this parameter is typically of the order of hundreds of microseconds, or a thousand times faster. Beamsteering agility is important in tracking targets, multitasking the radar between diverse operating modes, providing resistance to jamming, and supporting multiple concurrent missile shots.
Angle Tracking Technique is the method used by the radar to measure the angular position of a target within the radar's mainlobe. The favoured technique in recent decades is monopulse angle tracking, due to its accuracy and resistance to many jamming techniques. Monopulse angle tracking can use multilobed techniques, or sequential lobing techniques.
Again whatever jamming/ECM equipments you would be using on JF-17 would more often than not would be used as defensive role...i.e. avoid being jammed before flanker radar.........The person which I mentioned was the head of Sukhoi corporation and the other is a world known electronic Scientist/expert who have real time experiences on some of world's best fighter planes...........feel free to disagree.
And to add I am yet to mention the SAP-14 jammers and SAP-518 ECM pods being carried by Su 30s........... plus currently MKI are going under extensive upgrades that would house Zhuk ASE/NIIP N050 AESA with 1650+ T/R modules rated at 20+kW peak power+L-band AESA mounted on wings that would make it a formidable electronic attack aircraft with a mini AWACS role.............Hope this ends the discussion here as your types are already lining up........spare me and better find another fan-boy of your type to continue.
Thanks
DARKY
PS
It would be nice if you being a senior member think thank could abstain from using words like ''son'' if you really aren't an old man with 70+ years behind him.......hope you understand.
..............all I can say is wow
and any knowledgeable person would understand who is living in the fantasy world.
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