On Nov 20, 2012, at 9:34 AM, Aleksandar Jelenak - NOAA Affiliate wrote:
> [snip]
>
> 10) platform_azimuth_angle
>
> "platform" refers to the vehicle from which observations are made e.g.
> airplane, ship, or satellite. Platform azimuth angle is the horizontal
> angle between the line of sight from the observation point to the
> platform and a reference direction at the observation point, which is
> often due north. The angle is measured clockwise starting from the
> reference direction.
>
> Units: degree
>
> 11) sensor_azimuth_angle
>
> The horizontal angle between the line of sight from the observation
> point to the sensor and a reference direction at the observation
> point, which is often due north. The angle is measured clockwise
> starting from the reference direction.
>
> Units: degree
Regarding the "which is often due north" language, if you measure azimuth angle from due south, how should this communicated in the file? A comment? Or should the definition force the use of due north for this standard name?
Cheers,
-Corey
--
Corey Bettenhausen
Science Systems and Applications, Inc
NASA Goddard Space Flight Center
301 614 5383
corey.bettenhausen at ssaihq.com
Received on Tue Nov 20 2012 - 08:02:29 GMT
