2007-09-10 20:25:18 · 3 answers · asked by reza_hemmatdj 1 in Science & Mathematics ➔ Engineering
Yeah, they make 'em, but ring lasers work a lot better when they're integrated onto a single piece of silicon. It's a lot easier to correct for thermal shift than with the old fiber optic types.
Doug
2007-09-10 21:37:16 · answer #1 · answered by doug_donaghue 7 · 0⤊ 0⤋
there are plenty of textbooks out there that discuss this topic. Some people have even devoted Master's/PhD theses to this. Generally, you have to know the 1) relationship between the GPS antenna and your sensor and 2) the orientation of the vehicle when you're tying the GPS and MEMS data together. Then its a simple coordinate transformation. You also have to synchronize your GPS and sensor data. This is usually done via a timing signal (e.g. 1PPS). Most integrations like this usually use the GPS as a reset for the sensor since your MEMS data is likely to be recorded at a higher rate (say, 10 or 25Hz) than your GPS data (usually 1Hz). I suspect you'll also feed this info into a Kalman filter as well (so you may want to read up on that).
2016-05-17 04:49:42 · answer #2 · answered by ? 3 · 0⤊ 0⤋
what is your question? They do exist. Suggest Wiki.
2007-09-10 20:31:53 · answer #3 · answered by Anonymous · 0⤊ 0⤋