NorthStar 972 Quickstart Manual And Reference Manual page 101

Designating targets
To designate a MARPA target on the radar
screen, set the Control menu key to
Use the cursor pad to move the cursor over
the target, and finally press Acquire target.
The 972 will attempt to lock on to the
target and begin tracking it. A maximum of
ten targets can be tracked at once
.
Each target being tracked will be indicated
by a symbol placed over the target. A list of
symbols and their meanings is shown
below. The symbols follow the targets for
as long as they can be tracked by the 972.
Reference Manual Revision B
.
Targets
Symbol Symbol
name
Dashed box
Blue circle
with vector
Red triangle
with vector
Yellow
diamond
Symbol definition
Radar is attempting to
acquire the target as
a MARPA target.This
typically takes up to
several full rotations
of the radar antenna
array.
Normal target. Vector
shows course and
speed of the target.
Threat target. The
target is inside the
radar alarm area.
Vector shows course
and speed of the
target.
Lost target. The radar
has lost the target and
is attempting to
reacquire it.
Reference section 6 — Radar
MARPA targets
97