Which statement is true about the 1/2 Meter radar resolution?

• A. It can cause interference with FAA ground radars
• B. It cannot cause interference with FAA ground radars
• C. It is the lowest resolution available
• D. It has no effect on image quality

Answer: (A)

High-resolution radar in range requires a wide bandwidth to separate targets that are close together. A 1/2 meter range resolution means the system handles a large bandwidth—on the order of hundreds of megahertz—to achieve that level of detail. That broad spectral footprint increases the chance of energy spilling into frequencies used by other radars, including FAA ground radars. If spectrum is shared or not properly filtered and coordinated, this can lead to interference, so the statement that this resolution can cause interference with FAA ground radars is the correct one.

Saying it cannot cause interference ignores the reality of needing wide bandwidth for such fine resolution. It also isn’t the lowest resolution available—the 1/2 meter figure describes a relatively high (fine) resolution, not the smallest one. And while higher resolution can influence image quality, it certainly does not have no effect on image quality; it typically improves the ability to discern small details.