Name another advantage of X-Band.

• A. Better Bearing Discrimination
• B. Lower cost operation
• C. Wider beam width
• D. Less susceptible to interference

Answer: (A)

bearing discrimination improves when the radar beam is narrower. X-Band operates with a shorter wavelength, so for a given antenna size the beamwidth is reduced (beamwidth is roughly proportional to wavelength divided by antenna diameter). A tighter beam means the radar can distinguish targets that are closer together in angle, giving clearer separation and less angular ambiguity. In contrast, using lower frequencies would widen the beam for the same antenna, making it harder to tell two nearby targets apart unless you use a much larger antenna, which isn’t always practical. The other options aren’t universal advantages of X-Band: cost isn’t guaranteed to be lower, beam width isn’t wider (it’s narrower), and susceptibility to interference depends on many factors beyond just the band.