Spherical Cross-track Height¶
Classification |
Miscellaneous |
Available forms |
Forward and inverse. |
Defined area |
Global |
Alias |
sch |
Domain |
3D |
Input type |
3D coordinates |
Output type |
Projected coordinates |
proj-string:
+proj=sch +plat_0=XX +plon_0=XX +phdg_0=XX
The SCH coordinate system is a sensor aligned coordinate system developed at JPL (Jet Propulsion Laboratory) for radar mapping missions.
See [Hensley2002]
Parameters¶
Required¶
- +plat_0=<value>¶
Peg latitude (in degree)
- +plon_0=<value>¶
Peg longitude (in degree)
- +phdg_0=<value>¶
Peg heading (in degree)
Optional¶
- +h_0=<value>¶
Average height (in metre)
Defaults to 0.0.
- +lon_0=<value>¶
Longitude of projection center.
Defaults to 0.0.
Note
The default convention is to interpret this value as decimal degrees. To specify radians instead, follow the value with the "r" character.
Example: +lon_0=1.570796r
See Projection Units for more information.
- +x_0=<value>¶
False easting.
Defaults to 0.0.
- +y_0=<value>¶
False northing.
Defaults to 0.0.
- +ellps=<value>¶
The name of a built-in ellipsoid definition.
See Ellipsoids for more information, or execute
proj -le
for a list of built-in ellipsoid names.Defaults to "GRS80".
- +R=<value>¶
Radius of the sphere, given in meters. If used in conjunction with
+ellps
,+R
takes precedence.See Ellipsoid size parameters for more information.