The scanning indicator that plots target range and azimuth information in polar coordinates is the

The scanning indicator that plots target range and azimuth information in polar coordinates is the

• A. A-scan
• B. Plan Position Indicator (PPI)
• C. Raster
• D. C-scan

Answer: (B)

Plan Position Indicator uses a circular, plan-view display where the center represents your radar location. Target range is shown as distance from the center, and azimuth is the angle around the circle. This arrangement plots each contact in polar coordinates, so you can quicklyread both how far away a target is and in what direction it lies. A-scan, by contrast, displays range as a vertical trace over time for a single target and provides no bearing information. C-scan shows a plan view at a fixed elevation, typically in a rectangular map-like format rather than polar coordinates around a center. Raster describes the display’s refresh pattern rather than how targets are plotted.

Plan Position Indicator uses a circular, plan-view display where the center represents your radar location. Target range is shown as distance from the center, and azimuth is the angle around the circle. This arrangement plots each contact in polar coordinates, so you can quicklyread both how far away a target is and in what direction it lies.

A-scan, by contrast, displays range as a vertical trace over time for a single target and provides no bearing information. C-scan shows a plan view at a fixed elevation, typically in a rectangular map-like format rather than polar coordinates around a center. Raster describes the display’s refresh pattern rather than how targets are plotted.