AN3359

Coordinate system

Doc ID 018585 Rev 1

5/28

1

Coordinate system

For the purpose of this document, the spherical coordinate system illustrated in Figure 1 is

used.

Figure 1.

Spherical coordinate system

The PCB module is orientated vertically (plane X-Z), and located in proximity to the origin of

the coordinate system. The azimuth angle radiates from the X-axis towards the Y-axis, and

the elevation angle radiates from the Z-axis towards the horizontal plane, X-Y. Sometimes,

as with geographical and navigational systems, the X-axis is called the "Nord-axis", the Y-

axis is called the "East-axis" and the Z-axis is called the "Zenith-axis".