National Center for Atmospheric Research
ATD... Towers Invarient with Elevation Angle


Figure 1

Two towers are shown in the figure at right. The parameter displayed is received power (dBm) in a PPI scan at elevations of 1.5°, 1.3° and 1.1°. Note that as scan elevation angle changes, the position of these towers remains invarient. Other small, discrete echoes also remain in the same location, but it was not possible to positively identify those echoes as specific hard targets. Numerous echoes disappear or seem to move when the elevation angle changes; these echoes may be aircraft or birds, or may simply be too short to be seen with increasing elevation angle.


Document Credits: Scott Ellis and Bob Rilling, / NCAR Atmospheric Technology Division
Created: 8-Feb-2000
Last Modified: 8-Feb-2000