www.radartutorial.eu Radar Basics

Display in the cockpit

PPI-Display

Figure 1: Display in the cockpit

Höhenwinkel [degrees]
Höhe [ft * 1000]
Entfernung [NM]

Figure 2: Calculation of a Vol-CAPPI-Display

elevation [degrees]
Height [ft * 1000]
range [NM]

Figure 2: Calculation of a Vol-CAPPI-Display

Display in the cockpit

The PPI - display present a „map style” view of the oncoming weather. It is common to have powerful controls to allow the pilot to zoom in and out of the viewing display screen as he requires.

CAPPI: (Constant Altitude PPI)
is a horizontal, two-dimensional representation of radar measurands in a certain height (or Altitude). A CAPPI is calculated from several PPI measurings at different elevations. The different heights are usually represented by color variations on a PPI-Scope.

Vol-CAPPI-Display
Click to enlarge: 640·480px = 67 kByte
Figure 3: Structure of a Vol-CAPPI display