What is a "Airfield SBA HAT Antenna"

[EAF331 Starfire]

I found this in the FMB but I can't seem to google an answer I can use.
I guess that it is a kind of radio-landing aid but not how, who and use.
Anyone know what it is and if it is usable in COD?

[esmiol]

no idea.... lot of think are maybe useable but nobody know how to make them work.....

maybe in some month when the dev team will have time to make doc.

[IvanK]

SBA stands for Standard Beam approach. A system developed from Lorenz.