Does anyone know how TF-X BURFIS radar will compare to the F-35 APG-81?
The APG-81 is a GaAs (Gallium Arsenide) radar. The APG-81 has a detection range of 150km for 1 m² targets (RCS).
However, BURFIS is a GaN, Gallium Nitride radar:
Gallium Nitride is capable of withstanding greater heat...