rotation angles in IMUs

[senmeis]

Hi,

I’ve read the following relationship: Yaw = Azimuth and Pitch = Elevation, at least for inertial measurement units. Does it apply for other applications?

 

[BradtheRad]

When observing the sky, elevation measures how high up an object appears. Overhead=90 degrees.

Azimuth is compass direction, 0 to 360 degrees.

 

[senmeis]

What you said is absolutely correct, but what about the relationship? As far as I know Yaw and Pitch belong to Euler rotations which are often used for platforms such as aircrafts.

 

[barry]

I believe they are equivalent. What do you mean by “other applications”?

 

[senmeis]

I’ve got this equivalence from an article about IMUs and wonder if it’s true for other applications.

 

[barry]

You’re getting your bloomers in a bunch over nomenclature. Again, what do you mean by “other applications”? Give an example. aircraft? Ships? Ultimate frisbee?

 

[senmeis]

Actually I’m interested in antennas mounted on moving platforms such as boats. I think antennas and telescopes have only azimuth and elevation but boats have yaw, pitch and roll. For mounted antennas Yaw = Azimuth and Pitch = Elevation. Roll doesn’t play a role in this case (at most polarisation). Does this make sense so far?

 

[barry]

Ships also have sway, surge and heave. So? We’ve already established that yaw is synonymous azimuth, etc. I don’t understand your question, I guess.