Quartz uses a standard Cartesian coordinate system. By default, the origin is in the lower-left corner of the drawing canvas with x values increasing to the right and y values increasing upwards.

Navigation system states position, velocity, and attitude are defined with reference to coordinate frames. These navigation frames are defined differently for the various integrated navigation systems ...

Schematic diagram of the coordinate transformation process in cylinder structure. (A), (D), (C), and (F) Cartesian coordinates. (B) and (E) Curvilinear coordinates. The red lines denote isotherms.