CPC H04B 17/12 (2015.01) [H04B 17/21 (2015.01); H01Q 1/421 (2013.01)] | 6 Claims |
1. A method for calibrating an antenna positioned on an aircraft, said antenna being protected by a radome and operating in a band suitable for providing internet communication to a user via a satellite, comprising at least the following steps:
defining a number n of angle positions for the aircraft located in a calibration region, where n is greater than one,
measuring the value of the orientation of the antenna for each position n, [Aa(n), Ea(n)], where Aa(n), Ea(n) correspond to the azimuth and the elevation of the antenna for a position n,
defining the theoretical orientation of the antenna [Aa(n)*, Ea(n)*] taking into account the pitch value, the roll value and the heading value for the aircraft for each position n, and the satellite orientation values [Ar(n), Er(n)]:
[Aa(n)*, Ea(n)*]=F(H(n), P(n), R(n), δH, δP, δR, δE, Ar(n), Er(n)), where F is a chosen geometric function,
where Ar(n), Er(n) are the coordinates of said satellite
defining a criterion C:
C=Σ(Aa(n)−Aa(n)*)2+(Ea(n)−Ea(n)*)2
minimizing the value of the criterion C in order to determine the bias values (δH, δP, δR, δE) from the values [Aa*(n), Ea*(n)] and using said bias values to minimize the differences between the measured angles and the theoretical angles.
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