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Originally Posted by Nexus7
Thanks for the practical description, i printed it out 
What kind of considerations do you do when you're thinking about possible locations of the sub(s) ? |
If I have no data indicating anything about the submarine's position, I assume it's located at some random point uniformly distributed over the search area.
If I have a datum here's what I think about
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- The amount of time that has passed since the sub was initially localized.
- The course and speed of the sub (if known).
- The size of the initial area of uncertainty surrounding the target.
From that, I can come up with a distribution of the submarine's possible locations and begin a search from there. With a little thought, one can find submarines even hours after an initial detection with a fair amount of reliability.
The big uncertainty is one's sonar performance in light of environmental factors. That's where submarines might be able to slip through, in spite of the real possibility of you overflying them a couple of times.