Input PPI's of Radial Velocity
The input data were based on a volume scan of four elevation angles at 0.5, 1.0, 2.0, and 3.0°
elevation angle. The input resolution is 125 m (410 ft 1 in).
PPI products of radial velocity to 45 km (28.0 mi) range for all angles are used, that is, a
product named V_XXX_045 is generated with the wild card * in the elevation selection. A
product pixel resolution of 720 x 720 is used to match the 125-m (410 ft 1 in) input data
resolution.
The following figure shows an example of a 3° elevation PPI. There is a clear air echo only
and winds are generally weak. At 15 km (9.3 mi) South of the radar there is a velocity
anomaly that can be later identified as a bird flock. There are also other airborne targets, but
since they may only be 1 or 2 pixels, it is dicult to separate these from the background
noise and clear air echo.
IRIS Product and Display User Guide M211319EN-H
158 RESTRICTED
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