The PESA work by the rule that two or more radar or other waves when they meet each other become one single wave whit longer wavelenght? A PESA/AESA combination can be maked? Oh that is irbis....sepheronx wrote:Giulio wrote:Hello.
I'm sorry, but I do not have time to read all the forums.
By dint of reading in the West about the supposed "backwardness" of Russia, I would like to hear some other bells.
In short, could you explain briefly what a PESA radar and what an AESA radar are and, above all: is it true that the first AESA radar was on a Mig-31? Thanks for the replies.
In short, PESA is a consentration of energy at a single point that produces a massive beam. AESA is where you got multiple transmitters creating a beam. Advantage of AESA is that it is harder to fight against in terms of electronic warfare and pick up its transmissions. PESA is a lot simpler to make and cheaper too. As well, what is not mentioned, is that PESA tends to be more accurate in its readings due to high amount of power concentrated at one point. Problem is that it is easier to pick up its transmissions and easier to combat in EW. In modern times, most aircrafts are equipped with ECM/ECCM subsystems so that can counter this issue.
MiG-31 radar is PESA radar. Zaslon radar.
Irbis-E radar is a hybrid radar (bit of both worlds).
Phazotron has its Zhuk-A series of AESA radar and Tikhomirov NIIP has their Byelka radar which is AESA. Zhuk-A has already been tested and flown in the MiG-29M2 for India and is being placed on Ka-52K helicopters. Byelka is being made for PAK FA and has already been tested/flown. Possibly can be used as well for current gen aircrafts as well.
Ground based AESA radar systems are apparently different. Russia has various ones, one being the NEBO SVU radar.
But then just free up space in the plane make in bigger and make a big PESA radar....
Also a user from forum said that noise come in spikes...just transmit on that spike frecvencies and you get no jamming. But then the enemy would try to reach lots of spikes....that consume battery...but aircrafts have electric generators that work non stop.