System for detecting an altitude of a vehicle dependent on a global positioning system.

摘要

When detecting altitudes the situation may arise where it is determined that an altitude (H) of a vehicle can not be calculated from data applied from satellites. When such a calculation can not be performed, a provisional altitude is obtained with the following equation: H = (1 - alpha ) HG + alpha HO where HG is an altitude obtained by the GPS, HO is a reference altitude obtained by outside means, and alpha (0 < alpha < 1) is a predetermined smoothing coefficent.