02-05-2010, 11:54 AM
[quote name='Austin' date='05 February 2010 - 08:44 AM' timestamp='1265339177' post='103915']
Hi Arun , Can you explain how this L Band AESA array can help in practical combat scenario ?
The Proposed L band AESA array is for Su-30MKI/Su-35 aircraft upgrade along with the X band ~ 1500 T/R AESA module.
For the new fighter they will come up with some better stealthy radar patch , its still a long way off till we see the PAK-FA in production.
[/quote]
Well L band can see though rain and weather phenomenons, unlike higher frequency beams (e.g. X band). Also L band is IMHo more difficult to be stealthy because RF absorbers for that frequency impose too much space/volume and weight, and stealth using reflection suppression, by use of smooth reflecting surface) do not work as well at those low frequencies (compared to X band).
In combat scenarios, L band in leading edge of wing surface (I.e. linear AESA array) can be periodically turned one for use as surveillance radar (getting 2-D scene of the scanned volume). If something is found then 3D scanning radar can be cued to that suspected solid volume (of space) to characterize the target and if necessary missile engagement. L band typically also gives higher range.
and during combat, craft quipped by L band can hide behing weather, that an adversary equipped with X band radar cant detect, while craft equipped with L band radar can clearly see the target.
Similary L bad AESA also serves as useful communication channel with network centric connection with nodes on ground or AWACS located far off in bad weather.
Hi Arun , Can you explain how this L Band AESA array can help in practical combat scenario ?
The Proposed L band AESA array is for Su-30MKI/Su-35 aircraft upgrade along with the X band ~ 1500 T/R AESA module.
For the new fighter they will come up with some better stealthy radar patch , its still a long way off till we see the PAK-FA in production.
[/quote]
Well L band can see though rain and weather phenomenons, unlike higher frequency beams (e.g. X band). Also L band is IMHo more difficult to be stealthy because RF absorbers for that frequency impose too much space/volume and weight, and stealth using reflection suppression, by use of smooth reflecting surface) do not work as well at those low frequencies (compared to X band).
In combat scenarios, L band in leading edge of wing surface (I.e. linear AESA array) can be periodically turned one for use as surveillance radar (getting 2-D scene of the scanned volume). If something is found then 3D scanning radar can be cued to that suspected solid volume (of space) to characterize the target and if necessary missile engagement. L band typically also gives higher range.
and during combat, craft quipped by L band can hide behing weather, that an adversary equipped with X band radar cant detect, while craft equipped with L band radar can clearly see the target.
Similary L bad AESA also serves as useful communication channel with network centric connection with nodes on ground or AWACS located far off in bad weather.