What is a resolution cell in radar terms?

What is a resolution cell in radar terms?

• A. A box in which a radar cannot distinguish more than one target/track
• B. A region of space with multiple tracks
• C. A unit of measurement for radar frequency
• D. A time-lapse interval used in tracking

Answer: (A)

In radar terms, a resolution cell is the smallest chunk of space over which the system can separate targets. It’s like a box defined by the radar’s range and angular (and sometimes elevation) resolution, such that two targets that lie inside that cell cannot be distinguished as separate—their returns merge and appear as a single target or track. The size of this cell comes from the physics of the radar: range resolution is set by the pulse bandwidth (roughly c divided by twice the bandwidth), and angular resolution depends on the wavelength and the antenna aperture. The practical upshot is that if two objects are closer together than this cell, the radar treats them as one. So the correct answer reflects that the resolution cell is a space limitation where only one target/track can be resolved. The other options don’t fit: it’s not simply a region with multiple tracks, not a unit of frequency, and not a time interval used in tracking.

In radar terms, a resolution cell is the smallest chunk of space over which the system can separate targets. It’s like a box defined by the radar’s range and angular (and sometimes elevation) resolution, such that two targets that lie inside that cell cannot be distinguished as separate—their returns merge and appear as a single target or track.

The size of this cell comes from the physics of the radar: range resolution is set by the pulse bandwidth (roughly c divided by twice the bandwidth), and angular resolution depends on the wavelength and the antenna aperture. The practical upshot is that if two objects are closer together than this cell, the radar treats them as one.

So the correct answer reflects that the resolution cell is a space limitation where only one target/track can be resolved. The other options don’t fit: it’s not simply a region with multiple tracks, not a unit of frequency, and not a time interval used in tracking.