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Echo Trails
This four-figure sequence shows how Echo Trails tracks target move-
ment over time. The boat is stationary. Several boats will be trailed.
Color mode is default. Echo Trail update interval set to 30 seconds.
Echo Trails fig. 1. Elapsed time = zero.
Echo Trails fig. 2. Elapsed time = 5 seconds. Arrows show travel direction.
Targets
Small boat targets
appear as red spots.
Trails are green.
Target
Trail
Land mass
is red; trail
green will
replace red
as time
passes.