Quote:
Originally Posted by FPSchazly
It takes a few more LOBs after your towed has straightened out to see if some data is bad.
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One of the things you look for is a contact turning or changing speed, also known in TMA as a Zig. A contact may zig because they reached a way point or a point on their charts where they need to slow down. Or, they may have detected a submarine tracking them.
So, zigs are important. The big thing to realize is that your current solution is now garbage and will need to be changed or refined.
One last point to ponder, TMA is always relative to
your hull. Try not to put too much faith into a solution, the speed you can assume is only accurate to within one knot.
