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Questions about inertial navigation systems which sense an aircraft's motion to determine location as it travels.

2 votes

What is the difference between IMU (Inertial Measurement Unit) and AHRS (Attitude and Headin...

From this website: Ellipse2-A: Miniature AHRS Ellipse2-A is a small-sized high performance Attitude and Heading Reference System (AHRS). It provides Roll, Pitch, Heading, and Heave data. This light-w …
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11 votes

Is it possible to accurately measure airspeed without pitot tube?

Airspeed - not reliably under all circumstances. You need to feel that wind somewhere in order to get a direct and accurate measure of the speed of it, and the pitot tube is an accurate and proven ins …
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17 votes
Accepted

What's the difference between orientation and position?

Yes there is a distinction, pitch, roll and heading are angles [unit = radian] and latitude, longitude and altitude are linear distances [unit = meter]. Together, these six parameters define the six …
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