NOTE: We've guessed that
you're not using a client that supports colored tables and have tried
to compensate. Low graphics mode looks much better on clients that
do... we recommend switching to Netscape 3.0 or Microsoft Internet
Plan Position Indicator (PPI)
Plan Position Indicator (PPI):
When scanning in PPI mode, the radar holds its
constant but varies its azimuth angle.
The returns can then be mapped
on a horizontal plane.
If the radar rotates through 360 degrees, the scan is
called a "surveillance scan". If the radar rotates through less than 360
degrees, the scan is called a "sector scan".