Method for calibrating an airborne goniometry apparatus for low frequencies
AssigneeBull SAS
InventorsBernard Teneze, Philippe Charton
Life of this patent
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Abstract
The invention includes a method for calibrating at low frequency and in-flight a goniometry apparatus including an antenna array, on board an air carrier. The method includes for an angular position of reception, calibrating the airborne goniometry apparatus at a given frequency, comprising transmitting, by means of a calibration transmitter, at the given frequency and in the direction of the goniometry apparatus, at least two calibration signals, with polarizations orthogonal to each other. The method also includes measuring a response of the antenna array for each of the signals. The invention also includes a system implementing such a method.
Claims14
A method for calibrating at low frequency and in-flight a goniometry apparatus comprising an antenna array, on board an air carrier, said method comprising, for an angular position of reception:
- calibrating said goniometry apparatus at a given frequency, comprising
- transmitting, by means of a calibration transmitter, at said given frequency and in a direction of said goniometry apparatus, at least two calibration signals, with polarizations orthogonal to each other, and
- measuring a response of said antenna array for each of said at least two calibration signals.
A system for calibrating an airborne goniometry apparatus comprising:
- a goniometry apparatus comprising an antenna array, configured to be on board an aerial carrier, and
- at least one calibration transmitter, intended configured to transmit at least two calibration signals with orthogonal polarizations in a direction of said goniometry apparatus;
- configured to implement a method for calibrating at low frequency and in-flight said goniometry apparatus, wherein for an angular position of reception
- calibrating said goniometry apparatus at a given frequency, comprising
- transmitting, by means of said at least one calibration transmitter, at said given frequency and in said direction of said goniometry apparatus, said at least two calibration signals, with said orthogonal polarizations orthogonal to each other, and
- measuring a response of said antenna array for each of said at least two calibration signals.
Dependencies are inferred from the claim text.