055 DDG Large Destroyer Thread
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antiterror13
Brigadier
Ok my bad. I didn't bother reading the article at all. Epic Fail LOL.
hmmm, why did you reply then ?
That's good article ... please be respectful to others. Definitely you can disagree
He's saying the epic fail was on his part, not a criticism of the article.hmmm, why did you reply then ?
That's good article ... please be respectful to others. Definitely you can disagree
What can a 3-4 meter by half a meter (give or take) L band strip do for early warning? L band radars are usually bigger. land based early warning radars like tps59 and fps117 rotate, so their width is less than their height. fps117 is around 4,5 by 7 meters. Shipborne smart-L radar has 4 meter tall antena, 8 meters long, and it rotates.
These L band arrays in the chinese slideshow don't necessarily have to be radar arrays. Their vertical resolution would seem to be horrible, almost a 2D radar, without height finding. Their horizontal resolution may be okay when they're looking head on, but as their beams start moving to the sides, it would fall off quickly.
Perhaps even so the radar, provided it is VERY powerful, may give some sort of long range warning. But it wouldn't give much else. No identification, no height finding, no precision.
Would then the S band radar somehow be cued in on that spot and used in some "silly powerful" mode where it can hope to give additional data?
There is precedent for using fairly small array for its bandwidth - the E-2 family of AEW planes, from its early radars to latest radar in D version. it is a 7 by 0,5 meter array working in UHF band. But it rotates, so its horizontal resolution isn't that bad. It's probably horrible when it comes to precise height finding though. Interstingly, Norman Friedman writes in his book that a big reason for choosing UHF was because E2 is commonly tasked to monitor the sea surface.
These L band arrays in the chinese slideshow don't necessarily have to be radar arrays. Their vertical resolution would seem to be horrible, almost a 2D radar, without height finding. Their horizontal resolution may be okay when they're looking head on, but as their beams start moving to the sides, it would fall off quickly.
Perhaps even so the radar, provided it is VERY powerful, may give some sort of long range warning. But it wouldn't give much else. No identification, no height finding, no precision.
Would then the S band radar somehow be cued in on that spot and used in some "silly powerful" mode where it can hope to give additional data?
There is precedent for using fairly small array for its bandwidth - the E-2 family of AEW planes, from its early radars to latest radar in D version. it is a 7 by 0,5 meter array working in UHF band. But it rotates, so its horizontal resolution isn't that bad. It's probably horrible when it comes to precise height finding though. Interstingly, Norman Friedman writes in his book that a big reason for choosing UHF was because E2 is commonly tasked to monitor the sea surface.
Maybe you should ask the designers of the PAK-FA this exact question. They must be pure unadulterated stupid to design an even smaller L-band radar.
L band is from 1 to 2 Ghz. Its wave length is merely 30 to 15 cm. The basic radio antenna theory tells us that the smallest antenna size to work in this band is half of the wave length which is 7.5 cm to 15 cm. 3 to 4 meters strip is 53 times larger than minimum requirement. I can guess that in that strip there are more than 1 antenna. Note, a TR unit is an individual antenna.
Excuse me but how was I not "respectful to others"? I was referring to myselfhmmm, why did you reply then ?
That's good article ... please be respectful to others. Definitely you can disagree
Where does su-57 use l band radar? Cheek arrays near the cockpit?
Anyway, if you happen to have contact of its designers willing to answer the question, do share it. Sadly, I have no way of contacting them.
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