Hey Jim,
How about removing one layer of terminology by using your definitions for
the allowed values of "direction":
roll: "positive_right_side_up" and "positive_right_side_down".
pitch: "positive_nose_up" and "positive_nose_down".
yaw: "positive_nose_right" and "positive_nose_left".
surge:
John,
There are a variety of conventions for defining roll, pitch, and yaw out
there. This is why we are avoiding a specific one. Others have searched
existing datasets that are using earlier versions of these standard
names (or not using standard names) and found that they don't all follow
Perhaps one should refer to the discipline of hydrostatics for help with
this? This paper, pulled from a quick search, has a diagram referencing
the platforms' frame of reference with respect to its center of
gravity. Sorry if this comment is retrograde.
Hi Jim, all,
I'm a bit confused by the "clockwise" and "anticlockwise". You mention the
orientation of the observer but not the location/orientation of the clock.
My assumptions (not sure why) for the clock: for roll, the observer (who is
facing forward) would be facing the clock; for pitch, the
Hi.
I've finally gotten back to this topic! The definitions below call out
an attribute named "direction" that is used to specify the direction for
positive values of the different quantities. We may need to add a
definition for the attribute to the Conventions. The values and meanings
for
