Detecting false positioning signals based on surveillance signals

• US 10,457,249 B2
• Filed: 10/24/2018
• Issued: 10/29/2019
• Est. Priority Date: 03/23/2017
• Status: Active Grant

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Johnson, Daniel P.
• Primary Examiner(s): Dsouza, Adolf
• Application Number:
  US16/169,505
• Publication Number:
  US 20190061693A1
• Time in Patent Office: 370 Days
• Field of Search: None
• CPC Class Codes: B60R 25/10 actuating a signalling device
• CPC Class Codes: B60R 25/33 of global position, e.g. by providing GPS coordinates
• CPC Class Codes: G01S 19/015 Arrangements for jamming, spoofing or other methods of denial of service of such systems
• CPC Class Codes: G01S 19/21 Interference related issues ; Issues related to cross-correlation, spoofing or other methods of denial of service
• CPC Class Codes: G01S 19/215 issues related to spoofing
• CPC Class Codes: G08G 3/02 Anti-collision systems
• CPC Class Codes: G08G 5/0004 Transmission of traffic-related information to or from an aircraft airborne radio transmission systems in general H04B7/185; airborne wireless networks H04W84/06
• CPC Class Codes: G08G 5/0047 Navigation or guidance aids for a single aircraft details of equipment G08G5/0017
• CPC Class Codes: G08G 5/04 Anti-collision systems
• CPC Class Codes: G08G 7/02 Anti-collision systems
• CPC Class Codes: G08G 9/02 Anti-collision systems
• CPC Class Codes: H04K 2203/22 for communication related to vehicles
• CPC Class Codes: H04K 3/22 including jamming detection and monitoring
• CPC Class Codes: H04K 3/255 based on redundancy of transmitted data, transmission path or transmitting source
• CPC Class Codes: H04K 3/65 using deceptive jamming or spoofing, e.g. transmission of false signals for premature triggering of RCIED, for forced connection or disconnection to/from a network or for generation of dummy target signal
• CPC Class Codes: H04K 3/90 related to allowing or preventing navigation or positioning, e.g. GPS

Abstract

A system, configured to mount on an ownship vehicle, includes a transceiver configured to receive positioning signals and receive surveillance signals including surveillance data from a second vehicle and processing circuitry configured to determine a location of the ownship vehicle based on the positioning signals received by the transceiver and determine expected characteristics of the surveillance signals based on the surveillance data. The processing circuitry is further configured to compare the expected characteristics and actual characteristics of the surveillance signals received from the second vehicle and determine that the surveillance signals include a discrepancy indicative of false positioning signals in response to comparing the expected characteristics and the actual characteristics. The processing circuitry is configured to output an alert signal indicating the false positioning signals in response to determining that the surveillance signals include a discrepancy.

Claims

1. A system, configured to mount on an ownship vehicle, the system comprising:

a transceiver configured to;

receive positioning signals; and

receive surveillance signals from a second vehicle;

receive surveillance signals from a third vehicle; and

processing circuitry connected to the transceiver, wherein the processing circuitry is configured to;

determine a location of the ownship vehicle based on the positioning signals received by the transceiver;

determine that the surveillance signals received from the second vehicle include a discrepancy;

determine that surveillance signals received from the third vehicle do not include a discrepancy;

determine that the second vehicle is closer than the third vehicle to the ownship vehicle;

determine that the second vehicle received false positioning signals from an attacker, in response to;

determining that the surveillance signals received from the second vehicle include a discrepancy;

determining that the surveillance signals received from the third vehicle do not include a discrepancy; and

determining that the second vehicle is closer than the third vehicle to the ownship vehicle; and

output an alert signal indicating the false positioning signals in response to determining that the surveillance signals received from the second vehicle include a discrepancy.

2. The system of claim 1, wherein the processing circuitry is further configured to:

determine that all surveillance signals received from other vehicles include a discrepancy; and

determine that the transceiver received false positioning signals from an attacker in response to determining that all surveillance signals received from other vehicles include a discrepancy,

wherein the processing circuitry is configured to output the alert signal indicating that the transceiver received false positioning signals.

3. The system of claim 2, wherein the processing circuitry is further configured to:

determine that all surveillance signals received from other vehicles, except the third vehicle, include a discrepancy;

determine that the third vehicle received false positioning signals from an attacker in response to determining that all surveillance signals received from other vehicles, except the third vehicle, include a discrepancy,

wherein the processing circuitry is configured to output the alert signal indicating that the third vehicle received false positioning signals.

4. The system of claim 1, wherein the processing circuitry is further configured to:

determine that no surveillance signals received from vehicles other than the second vehicle include a discrepancy; and

determine that the second vehicle received false positioning signals from an attacker in response to determining that no surveillance signals received from vehicles other than the second vehicle include a discrepancy,

wherein the processing circuitry is configured to output the alert signal indicating that the second vehicle received false positioning signals.

5. The system of claim 1, wherein the alert signal is a first alert signal, and wherein the processing circuitry is further configured to:

determine that the transceiver received a second alert signal from the third vehicle, wherein the second alert signal indicates that the third vehicle determined that surveillance signals received by the third vehicle from the second vehicle included a discrepancy; and

determine that the second vehicle received false positioning signals in response to determining that the transceiver received the second alert signal from the third vehicle,

wherein the processing circuitry is configured to output the first alert signal indicating that the second vehicle received false positioning signals.

6. The system of claim 1, wherein the processing circuitry is configured to determine that the surveillance signals received from the second vehicle include a discrepancy at least in part by:

determining expected characteristics of the surveillance signals received from the second vehicle; and

comparing the expected characteristics and actual characteristics of the surveillance signals received from the second vehicle,

wherein the processing circuitry is configured to determine that the surveillance signals received from the second vehicle include a discrepancy indicative of false positioning signals in response to comparing the expected characteristics and the actual characteristics.

7. The system of claim 6, wherein the processing circuitry is configured to:

determine that a difference between the expected characteristics and the actual characteristics exceeds a threshold level; and

determine that the surveillance signals from the second vehicle include the discrepancy in response to determining that the difference between the expected characteristics and the actual characteristics exceeds the threshold level.

8. The system of claim 6, wherein the processing circuitry is configured to determine the expected characteristics of the surveillance signals received from the second vehicle by at least determining an expected angle of arrival of the surveillance signals received from the second vehicle or an expected phase shift across antenna elements of the transceiver caused by receiving the surveillance signals received from the second vehicle.

9. The system of claim 1, wherein the processing circuitry is configured to output the alert signal by at least:

generating a warning based on the determined discrepancy in response to determining that the surveillance signals received from the second vehicle include a discrepancy; and

outputting the warning to a crewmember of the ownship vehicle.

10. The system of claim 1, wherein the processing circuitry is configured to output the alert signal by at least causing the transceiver to transmit the alert signal to the second vehicle.

11. The system of claim 1, wherein the processing circuitry is further configured to, in response to determining that the surveillance signals received from the second vehicle do not include a discrepancy:

determine a location of the second vehicle based on the surveillance data; and

generate a graphical representation of the location of the ownship vehicle and the location of the second vehicle.

12. The system of claim 1, wherein the processing circuitry is further configured to:

determine that surveillance signals received from a third vehicle include a discrepancy;

determine that the second vehicle is closer than the ownship vehicle to the third vehicle;

determine that the third vehicle is closer than the ownship vehicle to the second vehicle;

determine that the second vehicle and the third vehicle received false positioning signals from an attacker, in response to;

determining that surveillance signals received from a third vehicle include a discrepancy,

determining that the second vehicle is closer than the ownship vehicle to the third vehicle, and

determining that the third vehicle is closer than the ownship vehicle to the second vehicle,

wherein the processing circuitry is configured to output the alert signal indicating that the second vehicle and the third vehicle received false positioning signals.

13. The system of claim 1, wherein the positioning signals comprise Global Navigation Satellite System (GNSS) signals, and wherein the positioning signals comprise automatic dependent surveillance-broadcast (ADS-B) signals.

14. The system of claim 1, wherein the processing circuitry is further configured to determine that the second vehicle transmitted false surveillance signals in response to determining that:

determining that the surveillance signals received from the second vehicle include a discrepancy;

determining that the surveillance signals received from the third vehicle do not include a discrepancy; and

determining that the second vehicle is closer than the third vehicle to the ownship vehicle.

15. A system, configured to mount on an ownship vehicle, the system comprising:

a transceiver configured to;

receive positioning signals; and

receive surveillance signals from a second vehicle;

receive surveillance signals from a third vehicle; and

processing circuitry connected to the transceiver, wherein the processing circuitry is configured to;

determine a location of the ownship vehicle based on the positioning signals received by the transceiver;

determine that the surveillance signals received from the second vehicle include a discrepancy;

determine that the surveillance signals received from the third vehicle include a discrepancy;

determine that the second vehicle is closer than the ownship vehicle to the third vehicle;

determine that the third vehicle is closer than the ownship vehicle to the second vehicle;

determine that the second vehicle and the third vehicle received false positioning signals from an attacker, in response to;

determining that surveillance signals received from a second vehicle include a discrepancy;

determining that surveillance signals received from a third vehicle include a discrepancy;

determining that the second vehicle is closer than the ownship vehicle to the third vehicle; and

determining that the third vehicle is closer than the ownship vehicle to the second vehicle; and

output an alert signal indicating the false positioning signals in response to determining that the surveillance signals include a discrepancy.

16. The system of claim 15, wherein the processing circuitry is further configured to:

determine that no surveillance signals received from vehicles other than the second vehicle and the third vehicle include a discrepancy; and

determine that the second vehicle and the third vehicle received false positioning signals from an attacker in response to determining that no surveillance signals received from vehicles other than the second vehicle and the third vehicle include a discrepancy,

wherein the processing circuitry is configured to output the alert signal indicating that the second vehicle and the third vehicle received false positioning signals.

17. The system of claim 15, wherein the alert signal is a first alert signal, and wherein the processing circuitry is further configured to:

determine that the transceiver did not receive a second alert signal from the second vehicle indicating that the second vehicle determined that surveillance signals received by the second vehicle from the third vehicle included a discrepancy;

determine that the transceiver did not receive a third alert signal from the third vehicle indicating that the third vehicle determined that surveillance signals received by the third vehicle from the second vehicle included a discrepancy; and

determine that the second vehicle and the third vehicle received false positioning signals in response to determining that the transceiver did not receive the second alert signal from the second vehicle or the third alert signal from the third vehicle.

18. A system comprising:

means for receiving positioning signals;

means for receiving surveillance signals from a second vehicle;

means for receiving surveillance signals from a third vehicle;

means for determining a location of the ownship vehicle based on the positioning signals received by the transceiver;

means for determining that the surveillance signals received from the second vehicle include a discrepancy;

means for determining that surveillance signals received from the third vehicle do not include a discrepancy;

means for determining that second vehicle received false positioning signals from an attacker in response to;

determining that the surveillance signals received from the second vehicle include a discrepancy;

determining that the surveillance signals received from the third vehicle do not include a discrepancy; and

means for outputting an alert signal indicating the false positioning signals in response to determining that the surveillance signals include a discrepancy.

19. The system of claim 18, wherein the alert signal is a first alert signal, the system further comprising:

means for receiving a second alert signal from the third vehicle indicating that the third vehicle determined that surveillance signals received by the third vehicle from the second vehicle included a discrepancy; and

means for determining that the second vehicle received false positioning signals in response to determining that the transceiver received the second alert signal from the third vehicle.

20. The system of claim 18, further comprising:

means for determining that the second vehicle is closer than the third vehicle to the ownship vehicle; and

means for determining that the second vehicle received false positioning signals from an attacker in response to determining that the second vehicle is closer than the third vehicle to the ownship vehicle.