This is a part of advertisement as well
1- off boresight has nothing to do with ionospheric reflection , you are meant to say over horizon capability
This is just your bias opinion , i see LM disclosed bad data related to their yet fighter all the time while i havent seen the Russian said a bad word about their sukhoi
why don't you search for mig 31 documentry in youtube, you will increase your knowledge by watching a few of them.
Hi, Since English is not my first language, I have difficulty understanding English documentaries. It would be better if you could give me a link to a written document.
watch from 16 min to understand the Zaslon radar and the data link as well as how the target was selected and assigned by the lead Mig 31.
All it says is that the lead aircraft decides on the target and allots them to all the aircraft in the group. Where does it say anything about third party targeting? Communicating and designating targets is not the same third party targeting. MKIs also work in the similar fashion.
The MiG-31 was equipped with RK-RLDN and APD-518 digital secure datalinks. The RK-RLDN datalink is for communication with ground control centers. The APD-518 datalink enables a flight of four MiG-31 to automatically exchange radar-generated data within 200 km (124 mi) from each other (a group of four MiG-31 interceptors is able to control an area of air space across a total length of 800 km). It also enables other aircraft with less sophisticated avionics, such as MiG-23,25,29/Su – 15,27 to be directed to targets spotted by MiG-31 (a maximum of 4 (long-range) for each MiG-31 aircraft). Similarly complex S-300 aircraft with a group of APD-518 can: share data obtained by various radars from different directions (active or passive scanning radiation) and summarize the data. That is, the target can be detected by passively (through noise posed to protect themselves / active search radar (target)) and (or) the active simultaneously from many different directions (active search radar MiG-31). And everyone aircraft has APD-518 will have exact data, even if it is not involved in the search.
It actually create images of what it has detected. Meaning in normal radar only a blip or dot is seen and you have to decide about the threat by verifying it by opening radio channels if its friendly or if you are sure it enemy the you may decide to shoot down a doubtful affair. But a ROFAR radar creates images like if its F16 the entire plane is visible or building everything it sees. Russians (KRET) are leaders here and are on the verge of producing.
I got the point of how it works, but what is out of my understanding is how its going to create image. Its more of PAO or Phased Array Optics where light waves are used rather then Radio waves like in case of RADAR.
There are various definition for a "photonic radar" so it can be very confusing for most people
That is wrong .A normal radar can easily create image of what they detect as long as you either a big enough gain ( aka small enough beamwidth ) or you used a time-based solution called synthetic aperture:
Thanks a lot. But here too we are basically working with RF signal. Does the ADC converts the received RF frequencies back into optical output in this case?There are various definition for a "photonic radar" so it can be very confusing for most people
The first is Phased array radar where ferrite or bit phase shifters are replaced with Optic fiber, thus making use of "True time delay" principle. Called as Photonics true time delay. The advantage is that it removes bottleneck of operational bandwidth of active array radar. (Phase shifters do limit radar operational frequency due to phase mismatch in the phase shifter element)
This technique is so far limited by difficulties of implementation as hundreds of precisely matched fiber optic threads must be manufactured for each elements.
One example of a brute force approach:
The second definition of Photonic radar is the one that use photon entanglement principles ( or they also call it a quantum radar ), this one is still mostly in theoretical stage as far as i know
The third definition of photonic radar is a kind of radar where they used photonic method to generate RF signal. For current radar , transceivers can only generate digital signals at frequencies of 2 GHz or lower To get the higher frequencies needed for better resolution, those signals have to be upconverted by other electronics.When you do that you got a bit noise ( called internal noise of the system ) which will affect your detection range ..etc. For this kind of radar , they select two optical resonant frequencies (modes) in a mode-locked laser and fired it at a photodiode sensor. The electrical output from the sensor is an RF signal that can reach up to 40 GHz without upconversion. Because there is no up convention there is little noise ( about 10 dB less than current system if i recall correctly )
French are upgrading RBE2 to GaN by 2018 and India will get Rafales with GaN RBE2 AESA which Rafale F3R version. India has negotiated for the latest version of Rafale (due to delay in MMRCA deal and all the money saved from kickbacks to khangress and yet lower price)to avoid MLU, now MLU for Rafale will come only post 2030.
I don't know if GaN RBE2 AESA will be induced for F3R. But it's on track for this standart or the next one.
