grey boy 2
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AESAIs this an AESA radar or PESA radar?
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AESAIs this an AESA radar or PESA radar?
LPI, TWS, AA, AG, SAR, ECM, ECCM, DL, NC, +MTBF -MTTR, +SA,
Got this much through google :
SAR = Specific absorption rate
ECM = Electronic Countermeasures.
ECCM = Electronic Counter Countermeasures.
+MTBF = positive mean time before failure, that's a common figure in electronics.
-MTTR = reduced mean time to repair.
The rest:
LPI - Low Probability of Intercept. It's one of the great advantages of AESA, it keeps the enemy's RWR (radar warning receiver) cold and off your trail.
DL- Data link.
TWS - Track while scan, it's self-explanatory. It's good for dealing with multiple targets, radar can perform more than one task at once, allows you to track current targets while scanning for any new at the same time.
AA/AG- Air-to-Air, Air-to-Ground.
SA- Situational Awareness.
It's a "luxury" when you're making fighters at your own backyard with your folks eating Chapati and Chana, while not providing Champagne and Caviar for the most well-to-do folks and at the same time not providing the "luxury" of little privacy of a restroom to your about-to-be-wed brides...Don't all radars have that?
Didn't know these were like optional luxury items on higher end jets...
Hope the GaNs TR will be matured with Chinese tech firms soon so the TR modules will be replacesd as GaNs are power efficient and known to my knowledge they are cheap as well.
A question arise when i read the specifications as compare to other AESA it tracks only 16 targets and simultaneously engage 4 where as I have read it somewhere around a figure of 64 target tracking. If its right how this could be improved ? with the improvement of its processing system ??
Detection is when a body is above a certain threshold.
Tracking is when the (detected) body is assigned a queue to be updated with certain target resolutions. If 10 bodies are detected and if the system is capable enough, all 10 bodies will become 10 tracking targets. The problem then becomes resource allocation. The more queued bodies, the lower the target resolutions per target. Those resources are processor cycles, memory space, and display area.
In the classic mechanical antenna system, the reason tracking targets are less than detected bodes is because of the fixed mechanical movement of the antenna. The beam traverses a known path: back/forth.
If the pilot selects 4 out of 10 bodies for tracking, the radar computer must remember which four bodies and where each is in relation to each antenna sweep cycle.
For example...
Say the pilot chose 4 out of 10 bodies for tracking. Two on his starboard and two on port. Now the antenna has to run itself fully back/forth in order to update the pilot of those 4 targets.
Now say the pilot chose 4 out of 10 bodies for tracking, but all four are on his starboard. Now the antenna has to cycle (sweep) only to starboard.
In theory, there is no limit to how many bodies can be queued to become targets. Ten out of 10 or 100 out of 100. But in practice, limits to resources demands the radar design to have lower tracking targets from detected bodies. If the update time between multiple tracking targets is too long, the missiles launched may not acquire those multiple targets. If the designer chose too low a figure, like 2 tracking out of 10 detected bodies, he limits the pilot on the combat capability and increases the odds of losing that pilot and fighter aircraft.
A PESA system is superior to the classical mechanical system in the sense that the single beam can move thru all 10 targets much faster. But this is still a single beam with sequential movements.
On the other hand, an AESA system can create multiple beams to track multiple targets quite literally simultaneously. Say the pilot detected 10 bodies and designate 4 for tracking. But since the system can create multiple beams, why not 10 beams for 10 bodies ? In theory, yes, but in reality, the quantity of beams is limited by array size and software choreography. If the array is designed, including software, to produce 4 simultaneous beams, that is still far better than the PESA system because the pilot is seeing 4 target updates at the same time, compares to sequential like the mechanical and PESA systems.
Another advantage of the AESA system is that the pilot can switch one beam to become a communication signal, telling his companions of what he found. Or he can designate one beam to ground mapping while monitoring airborne targets just in case they become threats.
The flexibility of the AESA system is limited to only two items: software and array size.
Every country can perform cost/benefits analyses. From that perspective, it is telling that not single American fighter is going PESA. If the performance and capabilities gap between PESA and AESA is not that great, that cost/benefits analysis would have the AESA system confined to top line fighters like the F-22 and F-35, and PESA to older F-15, F-16, and F-18. Instead, the US is moving every fighter in inventory to AESA as fast as budget allocation allows.
Detection and Tracking in an AESA system is far superior in every aspects of the two modes.
LPI, TWS, AA, AG, SAR, ECM, ECCM, DL, NC, +MTBF -MTTR, +SA,
In our day, the band drum rolled, and then Tariq Aziz said, yeh cooler app ka hua!Low probability of intercept
Track while scan
Air-air
Air-ground
Synthetic aperture radar
Electronic countermeasure
Electronic counter-countermeasure
Datalink
Mean time between failure
Mean time to recover
Situation awareness
Modes
Aap ka howa kiun ke sara masla AESA ke saath cooler ka hi tha.In our day, the band drum rolled, and then Tariq Aziz said, yeh cooler app ka hua!
Can this AESA be fitted into BLOCK 1 and BLOCK II in future upgradation ???Aap ka howa kiun ke sara masla AESA ke saath cooler ka hi tha.
It if uses similar power levels and the same power fittings, yes it can be.Can this AESA be fitted into BLOCK 1 and BLOCK II in future upgradation ???
Aap ka howa kiun ke sara masla AESA ke saath cooler ka hi tha.
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