It can, but frankly I don't even think L band radars provide any meaningful advantage that a ground based SAM radar couldn't using its own longer wavelength radar bands.
L band can only help you detect a stealth target, but you will need a short wavelength, high energy band like X band to actually engage the target.
You will almost always use the higher energy bands like X band to achieve a weapons grade lock on a target instead of the L band.
Yeah I know, but you can't always depend on ground based L band radars especially in mountains of himalayas, L band and x band long range radars struggle there.
And Just knowing that there is a target 100's of km away In a certain direction with an accuracy of few km's is a big advantage.
> AFAIK longer wavelengths are better suited to longer ranges & require bigger size & more power, & vice-versa. So X-band is for shorter distance needing lesser power than L-band.
> Target lock simply means that the target(s) is/are being illuminated more than others, either continiously or in pulses. With older pre-ESA mechanical radars the beam was wider, stronger, alerting the RWR of target. With ESA, beam sharpening, frequency hopping, SAR & other H/w & S/w techniques, a target depening upon sensitivity & processing of its own sensors, may or may not know it has been found, IDed, tracked & targeted.
In 1990s Discovery Channel documentary it was mentioned that F-22 can even find out # of weapons & type, hanging out of 4gen jet w/o alerting it.
> Everywhere, every time, ground radar or AWACS may not be available. Using good engine & lower power GaN trancievers can help a lot.
Pretty sure those on f22 and f35 are not L band radars atleast not in the same sense of the L band radar on su 57.
First those on f22 and f35 are too small,
Pretty sure?
> When our own DRDO has made it of similar size then how you say that it is too small?
> L-band is 1-2 GHz so the wavelength is 15-30cm. Many manufacturers have put their products online with specs. It looks same size. Some makers also mentioned that the product is suitable for supersonic fighter jets.
> Su-57 has arranged the trancievers linearly & embedded in slats. Similarly F-22 & F-35 also show Band-2,3,4 antennas, those could be L-band.
**Above dimensions are in inches
second You need those L band aesa antennas to face in same direction As your x band aesa radar to detect enemy stealth fighter jets at long distance.
That's not a problem at all. A blade antenna can be embedded in control surfaces, rest anywhere in fuselage.
All L band antennas are not radar, L band has many other uses in fighter jets like IFF, EW, SATCOM, situational awareness, secure communication etc
> Yes it is true that L-band can be used for multiple uses like Sat-com, GPS, DME, IFF, TACAN, etc.
Slowly, year by year, the static models & infograpics will get refined at Aero-India. 
Meanwhile we can discuss the theory.
