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Message: <blockquote data-quote="arturo" data-source="post: 1063351490" data-attributes="member: 4288">gps works by triangulation...i'm still wondering how it can measure g-forces unless it calculates sudden movements outside of the avg movement and then calculated again against a set of known values to how much movement/second = g-forces involved. thats the only way i can see a gps unit can track g-forces. that said...any engineer would say KISS...and just install a accelerometer since it is cheap and data is raw and no need for a mega processor to calculate g-forces when it is already there in raw data.i agree with E3newbie...if yr using a gps for g-forces calculation, it is taking 1 set of data - triangulation from 3 or more sats, then converting it to movement and then taking movement and then converting it to g-force which also needs to be compared to the avg movement vs sudden movement. it may signify hard data, but this data would be less accurate than taking an accelerometer and getting the raw data out of the sensor since it was built to provide that. dont compare with your car's speedometer sensor. not apple to apple comparison. that sensor was made to measure speed and speed alone. besides..even in iso TS standards, speedometer reading have allowances to +- variables. nothing is 100% precise.</blockquote>

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