System and method to protect the privacy of ADS-B messages
First Claim
1. A system for protecting the privacy of automatic dependent surveillance-broadcast (ADS-B) messages, the system comprising at least one ground station comprising:
- a ground ADS-B transponder configured for receiving an ADS-B message;
a ground station control unit comprising;
an aircraft position determination module for retrieving an aircraft position included in the ADS-B message;
an operating conditions module for determining the fulfillment of one or more operating conditions, said operating conditions at least including determining if the aircraft position is an actual aircraft position; and
a fake aircraft position generator for computing one or more fake aircraft positions using a geometric projective transformation of the actual aircraft position over a surface;
wherein the ground station control unit is configured for broadcasting one or more fake ADS-B messages including the fake aircraft positions if the operating conditions are met.
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Accused Products
Abstract
System and method to protect the privacy of ADS-B messages transmitted by aircraft. The system includes one or more ground stations with a ground station control unit and a ground ADS-B transponder for receiving an ADS-B message. The ground station control unit includes an aircraft position determination module for retrieving an aircraft position included in the ADS-B message; an operating conditions module for determining the fulfillment of operating conditions including determining if the aircraft position is an actual aircraft position; and a fake aircraft position generator for computing one or more fake aircraft positions. The ground station control unit broadcasts one or more fake ADS-B messages including the fake aircraft positions if the operating conditions are met. With this system only trusted receivers can obtain the real position of the aircraft.
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Citations
20 Claims
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1. A system for protecting the privacy of automatic dependent surveillance-broadcast (ADS-B) messages, the system comprising at least one ground station comprising:
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a ground ADS-B transponder configured for receiving an ADS-B message; a ground station control unit comprising; an aircraft position determination module for retrieving an aircraft position included in the ADS-B message; an operating conditions module for determining the fulfillment of one or more operating conditions, said operating conditions at least including determining if the aircraft position is an actual aircraft position; and a fake aircraft position generator for computing one or more fake aircraft positions using a geometric projective transformation of the actual aircraft position over a surface; wherein the ground station control unit is configured for broadcasting one or more fake ADS-B messages including the fake aircraft positions if the operating conditions are met. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of protecting the privacy of ADS-B messages, comprising:
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receiving an ADS-B message; retrieving an aircraft position included in the ADS-B message; determining the fulfillment of one or more operating conditions, said operating conditions at least including determining if the aircraft position is an actual aircraft position; in response to the operating conditions being met; generating one or more fake aircraft positions using a geometric projective transformation of the actual aircraft position over a surface; and broadcasting one or more fake ADS-B messages including the fake aircraft positions. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A system for protecting the privacy of automatic dependent surveillance-broadcast (ADS-B) messages, the system comprising:
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an aircraft position determination module for retrieving an aircraft position included in an ADS-B message; an operating conditions module for determining the fulfillment of one or more operating conditions, said operating conditions at least including determining if the aircraft position is an actual aircraft position; a fake aircraft position generator for computing one or more fake aircraft positions using a geometric projective transformation over a surface; and a transponder for broadcasting one or more fake ADS-B messages including the fake aircraft positions if the operating conditions are met. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification