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Strategies & Market Trends : Ride the Tiger with CD -- Ignore unavailable to you. Want to Upgrade?

To: E. Charters who wrote (156769)	5/5/2009 3:23:36 PM
From: Canuck Dave	Read Replies (2) \| Respond to of 312733

OT I used calculus where I worked. Spherical harmonics, too. As well as Euler angles. They had an instrument which measured {x,y,z} velocities as they dropped it through the ocean. Using accelerometers and a compass, they knew the tip angle of the instrument, and the angle off magnetic north. They had a horrible empirical formula to correct to true {x,y,z} velocities. I changed it to a simple inverse Euler transformation, and bobs your uncle. CD