US 2021/0281331 A1Published application

Method for calibrating a ka band satcom antenna

AssigneeThales

InventorsPierre-Henri BOUTIGNY, Frédéric MAGDELAINE

Life of this patent

Estimating the term…

Loading patent…

Abstract

Method and device for calibrating an antenna includes the following steps: define a number n of positions of angles for the aircraft situated in a calibration zone: measure the value of the orientation of the antenna for each position n, [#a(n), #a(n)]; define the theoretical orientation of the antenna [#a(n)*, #a(n)*] by taking account of the pitch value, of the roll value, of the yaw value (heading) for the aircraft for each position n, and of the orientation values of the satellite [#r(n), #r(n)]: [Aa(n)*, Ea(n)*]=F(H(n), P(n), R(n), ##, ##, #R, ##, Ar(n), Er(n)), where F is a chosen geometric function; define a criterion C: C=#(#a(n)−#a(n)*)2+(#a(n)−#a(n)*)2; minimize the value of the criterion C so as to determine the bias values (##, ##, #R, ##) from the values [Aa*(n), Ea*(n)] and use the said bias values to minimize the disparities between the measured angles and the theoretical angles.

Claims6

Dependent claims

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.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/253,094Filed 21 Jun 2019
Priority: FR 180065522 Jun 2018
Published: 9 Sep 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

H04B 17/12
For calibration: of transmit antennas, e.g. of the amplitude or phase
H04B 17/221
For calibration of the receiver components: of receiver antennas, e.g. as to amplitude or phase
H01Q 1/421
Housings not intimately mechanically associated with radiating elements, e.g. radome: means for correcting aberrations introduced by a radome
H04B
Transmission

Family

US 11,750,304 B2Related patent
US 2021/0281331 A1This patent

From the US filing history. Foreign family members aren’t listed.

Timeline

Citations

Open elsewhere

Building an agent or pulling many patents? Use the API or MCP server instead of scraping pages. Get an API key