Device for detecting, by a drone, at least one approaching manned aircraft and associated method for detecting
AssigneeSafran Electronics & Defense
InventorsJulien Farjon, Vianney Quilici
Life of this patent
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Abstract
A device for detecting, by a drone, at least one manned aircraft, the manned aircraft emitting at least one positioning message comprising at least one altitude data, the detection device having a receiver to receive the positioning message and to measure its reception strength, a calculator configured to compare an altitude difference with a first threshold to activate a first state of vigilance in case of exceedance, compare the reception strength with a second threshold to activate a second vigilance state in case of exceedance, and generate at least one collision warning signal if the first vigilance signal and the second vigilance signal are active simultaneously.
Claims8
A detection device, for a drone, of at least one manned aircraft, the manned aircraft emitting at least one positioning message comprising at least one altitude data item, the drone having a drone altitude;
- the detection device comprising:
- at least one receiver configured to receive the positioning message from the manned aircraft,
- at least one calculator configured to:
- compare an altitude difference, determined between the altitude of the drone and the altitude of the manned aircraft, with a first threshold so as to activate a first state of vigilance in case of exceedance,
- as the receiver is configured to measure the reception strength of the positioning message received, the calculator is configured to:
- compare the reception strength of the positioning message with a second threshold so as to activate a second state of vigilance in case of exceedance,
- calculate a derivative of the reception strength of the positioning message between two consecutive time instants,
- compare the derivative of the reception strength to a third threshold so as to activate a third state of vigilance in case of exceedance, and
- if the first vigilance state, the second vigilance state, and the third vigilance state are active simultaneously, generate at least one collision warning signal, else said collision warning signal is not generated.
A method for detecting, by a drone, at least one manned aircraft, the manned aircraft emitting at least one positioning message comprising at least one altitude data item, the drone having a drone altitude, the detection method comprising steps consisting of:
- receiving the positioning message from the manned aircraft,
- measuring the reception strength of the received positioning message,
- comparing an altitude difference, determined between the altitude of the drone and the altitude of the manned aircraft, with a first threshold,
- activating a first state of vigilance when the first threshold is exceeded,
- comparing the reception strength of the positioning message with a second threshold,
- activating a second state of vigilance when the second threshold is exceeded,
- calculating a derivative of the reception strength of the positioning message between two consecutive time instants,
- comparing the derivative of the reception strength to a third threshold so as to activate a third state of vigilance in case of exceedance, and
- if the first vigilance state, the second vigilance state, and the third vigilance state are active simultaneously, generating at least one collision warning signal, else said collision warning signal is not generated.
Dependencies are inferred from the claim text.