BendixKing IN-862A System RDR-2100 - Manual (Page 48)

Figure 5: Vertical Profile View
Ground Returns
Aircraft at 20,000 feet MSL
Figure 5A:
Standard Azimuth View
Aircraft at 20,000 feet MSL
Figure 5: 40 nm range selected showing normal ground returns over that
terrain. The aircraft is at 20,000 feet MSL. The flashlight like beam image
provides a good representation of the radar beam characteristics. The center
line of this image is the ground. As the beam is scanned over the ground the
solid returns create a mirror image above and below the ground level pro-
viding reflectivity equal to the beam width and power level. As aircraft altitude
and range increase, the ground returns will decay in much the same way as
they increased from where the beam first intersected the ground.
44
Effective Date: 9/98 RDR 2100 Pilot's Guide: Rev 1
VP Operation In-Flight
Center of
Ground
Return
RDR 2100 PG 3/12/07 3:45 PM Page 44