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Cedar Rapids, Iowa | Almost every auto-steer system on the market has inertial sensors. Most are using MEMS gyros and accelerometers due to the price. The downside to MEMS is that they do drift, meaning they aren't that stable over a long period of time. They work well for the short amount of time between GPS position points. To do navigation over long periods of time (hours) without GPS to calibrate the error requires an extremely stable gyro, which is also going to be rather expensive. Google "ring laser gyro" or "fiber optic gyro" if you want to see what they look like. This type of equipment is available, and is commonly used for things like submarine and missile guidance.
As time goes on, those components will get cheaper, and will begin to be integrated into other solutions that had been using MEMS before.
-Lance
Edited by mx270a 2/17/2012 10:17
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Inertial guidance in the future?
