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Norton Rider

Homemade GPS Compass

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I've been thinking of what heading sensor to get for my boat. I like the idea of a GPS compass, but the ones in the market right now are out of my price range.

In my mind, a GPS compass should not be that complex. It seems like all that is needed are two or more antennas set at a known distance from each other, a processor (laptop, PC, etc), and a software program that turns the position information from the antennas into heading information. Am I over simplifying this? Has anybody done this before? If it hasn't been done, it sure seems like an opportunity for a savvy programmer.

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