Type 45 Have L band Smart-L radar who ranged 400 km around . And also he have s band sampson aesa radar 450 km ranged.
S band is 2-4 ghz and L band is 1-2 ghz it's almost same mission profile radar. Why that ship carry same type radars ?
Actually story is diffrent sampson is a aesa radar and he can be controlable his radar frequancies.
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And also a radar on gökdeniz is not mar-d, its mar radar. İt's diffrent sized and capable radar with same tech. And still we dont know which gökdeniz version (onboard mar or just fcr) will be in i class.
Mar-d = mar radar for naval platforms.
Mobil ariyici radar - mar ( for korkut spaag)
-d deniz.
Why should a land radar(mar) be placed on gokdeniz?
Check aselsan's brochure and you will find out an 3D search radar (mar-d) is optional for gokdeniz.
And it was shown with a mar-d on gokdeniz in latest i -class renders. It may be placed in somewhere else too, like on a mast in somewhere proper.
Also preference of Turkish navy has been revealed with barbaros MLU, they require one S band for volume search another X band for precision tracking and higher resolution (Also probably EW, illumination etc), so why shouldnt this apply to I -Class.
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Dual band radars hosts different set of radar module assemblies (rma) which acts as standalone radar. A dual band radar is combination of s and x band rma. The back end (consoles, servers etc) is shared.
If you scale a module (rma) down to a t/r unit then each unit may become a standalone radar, however it is not feasible.
A radar is not just a t/r unit, but a whole of processing units (computers, filters, servers) in the backend.
US does it in a feasible way by creating sub blocks of radars to freely change the form of the radar. They have hundreds of vessels which needs advanced radar systems.
I am expecting the same from Aselsan but probably a decade later.
Sampson is S band.
One of them (L band ) is early warning radar.
The latter is multi purpose tracking radar.