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Old 10-17-2019, 12:54 PM   #7
diver dave
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City: Fairport, NY and Palm Coast, FL
Country: United States
Join Date: Jan 2017
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One cannot expect a GPS based system to work, unless rodes are quite short, using a BAhamian moor, or actually on a mooring ball. If you look at the anchored circle described by a fixed anchor and, let's say 100' of rode; that is a pretty large area. Also, you need some time to wake up, start engine(s), turn on CP, spotlights, etc.

The design challenge with an accelerometer based system is medium term drift. You need a double integration to get distance from accel. I would also think about using a heading sensor too, to establish a straight line drift.
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