User Guide

Nokia Customer Care System Module and User Interface
NPL-4/5
Issue 1 05/04 Copyright © 2004 Nokia Corporation. All rights reserved. Page 45
with respect to geographic north.
Figure 14: Earths’s Magnetic Field Components
Tilt (σ)
Tilt angle is angle between horizontal level and equipment level. If a compass is tilt, then
this inclination has to be considered.
z (down)
x (heading direction)
y (right)
magnetic north
x
h
y
h
z
h
heading (xyz) = real earth
magnetic field direction
True geographic north x
h
y
h
heading
declination
λ
azimuth
α
inclination
δ