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.

+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.