Dear Steve, Nan, et al,
Thank you for proposing new standard names for platform_heave and improved
definitions for existing names for platform pitch, roll and yaw. Thank you also
to all those who submitted comments about these names.
Regarding Steve's proposals for new names, the discussion see
Nan,
You've done a great job! Thanks for doing all that!
Grace and peace,
Jim
On 7/25/18 8:11 AM, Alison Pamment - UKRI STFC wrote:
Dear Steve, Nan, et al,
Thank you for proposing new standard names for platform_heave and improved
definitions for existing names for platform pitch, roll and
Hi Alison,
Excellent job with the definitions. My view is that the pitch/roll/yaw names
are fine.
Cheers, Roy.
I have now retired but will continue to be active through an Emeritus
Fellowship using this e-mail address.
From: CF-metadata on behalf of Alis
Hi Roy and Jim,
Thanks for your quick comments on the definitions. I have just been looking
again at the suggested text for yaw_angle:
'Platform yaw angle is the angle between the platform's longitudinal/X axis and
the direction of travel. Zero yaw angle means the longitudinal axis is aligned
w
Hi again,
This is an area where it is easy to get tied up in knots because there are
multiple reference frames. If we talk ships then there is the
platform_orientation (or heading) which is measured using a gyro-compass - a
stabilised instrument that eliminates high-frequency variations in whe
Alison,
It's a lovely nested reference frames problem, isn't it? Roll, pitch,
and yaw are usually defined relative to a center of motion (CM)
reference frame defined using the (mean) direction of motion and the up
direction. In my (satellite-based) experience, the Y axis unit vector is
define
Dear Roy and Jim,
Thanks again both for your help.
Both your replies are saying that referring to direction of motion for
measuring yaw is a bad idea, and in any case it doesn't apply to stationary
platforms (which presumably have some means of determining their own
orientation relative to c
