Patent ID: 11862030
Assignee: AIRBUS HELICOPTERS
Field: Measurement (Instruments)
Classification: CPC G  B | IPC B  G

Claim 9:
10. The method according to claim 8,
wherein the obstacle height of an obstacle point is calculated using the following relation:

Hn=Dn*sin(alphan+(phi*sin(p sin))+theta*cos(p sin)), where “Hn” represents the obstacle height, “=” represents the equals sign, “*” represents the multiplication sign, “+” represents the addition sign, “sin” represents the sine function, “cos” represents the cosine function, “Dn” represents the distance of the obstacle point from the reference, obtained by means of the obstacle sensor, “alphan” represents the angle of elevation of the obstacle point, obtained by means of the obstacle sensor, “p sin” represents the bearing angle of the obstacle point, obtained by means of the obstacle sensor, “phi” represents a roll angle of the aircraft, “theta” represents a pitch angle of the aircraft.