Aircraft docking system

• US 20070222969A1
• Filed: 03/21/2006
• Published: 09/27/2007
• Est. Priority Date: 03/21/2006
• Status: Active Grant

• Current Assignee: ADB Safegate Sweden AB (ADB Safegate BVBA)
• Original Assignee: Safegate International AB (ADB Safegate BVBA)
• Inventors: Millgard, Lars
• Granted Patent: US 9,284,065 B2
• Time in Patent Office: Days
• US Class Current: 356/4.10
• CPC Class Codes: B64F 1/002 Taxiing aids
• CPC Class Codes: G01C 3/08 Use of electric radiation detectors
• CPC Class Codes: G01N 2021/1795 Atmospheric mapping of gases
• CPC Class Codes: G08G 5/0026 located on the ground
• CPC Class Codes: G08G 5/065 Navigation or guidance aids, e.g. for taxiing or rolling

Abstract

An aircraft docking system (115, 117) is configured to be located at a docking site (103, 105). The system comprises distance determining means configured to determine, using electromagnetic radiation signal reception means, at least a distance between the system and an aircraft (111, 113). The distance determining means are further configured to measure at least one property of a receiver signal received by the signal reception means, the property being related to the visibility at the docking site, compare said measure of the at least one receiver signal property with a thres-hold value and, depending on the comparison, provide a signal indicative of whether or not the visibility at the docking site is good enough to allow safe docking of the aircraft.

Claims

1. An aircraft docking system configured to be located at a docking site, said system comprising distance determining means configured to determine, using electromagnetic radiation signal reception means, at least a distance between the system and an aircraft and where said distance determining means are further configured to:

measure at least one property of a receiver signal received by said signal reception means, said property being related to the visibility at the docking site,

compare said measure of the at least one receiver signal property with a threshold value, and

depending on said comparison, provide a signal indicative of whether or not the visibility at the docking site is good enough to allow safe docking with the system.

2. The system according to claim 1, configured to measure said at least one receiver signal property at least in terms related to scattering of said electromagnetic radiation.

3. The system according to claim 2, where the distance determining means comprise laser ranging means and where the distance determining means are configured to measure scattering of laser radiation.

4. The system according to claim 2, where the distance determining means comprise radar ranging means and where the distance determining means are configured to measure scattering of radar radiation.

5. The system according to any of claims 2 to 4, where the distance determining means are configured to measure backscattered electromagnetic radiation.

6. The system according to claim 5, where the distance determining means are configured to determine a power distribution of a received signal of the backscattered electromagnetic radiation.

7. The system according to claim 1, where said distance determining means comprise signal reception means comprising imaging means configured to provide two-dimensional images of the docking site and where the distance determining means are configured to measure the at least one property of the receiver signal at least in terms related to a contrast difference between at least two areas within an image.

8. The system according to claim 7, where said imaging means are configured to determine said contrast difference between predetermined locations at the docking site, said predetermined locations corresponding to said least two areas within the image.

9. The system according to claim 8, where said predetermined locations are located substantially at a same distance from the system.

10. The system according to any of claims 7 to 9, where the imaging means are configured to detect electromagnetic radiation in at least a visual wavelength interval.

11. The system according to any of claims 7 to 9, where the imaging means are configured to detect electromagnetic radiation in at least an infrared wavelength interval.

20. Use of an aircraft docking system according to claim 1, for controlling operations at an airport.

12. A method for controlling aircraft docking in an air-craft docking system located at a docking site, said system comprising distance determining means configured to determine, using electromagnetic radiation signal reception means, at least a distance between the system and an aircraft and wherein said distance determining means perform the steps of:

measuring at least one property of a receiver signal received by said signal reception means, said property being related to the visibility at the docking site,

comparing said measure of the at least one receiver signal property with a threshold value, and

depending on said comparison, providing a signal indicative of whether or not the visibility at the docking site is good enough to allow safe docking with the system.

13. The method according to claim 12, wherein the measuring of at least one receiver signal property comprises measuring at least scattering of said electromagnetic radiation.

14. The method according to claim 13, wherein the measuring involves measuring backscattered electromagnetic radiation.

15. The method according to claim 14, comprising determining a power distribution of the backscattered electromagnetic radiation.

16. The method according to claim 12, where said distance determining means comprise signal reception means comprising imaging means configured to provide two-dimensional images of the docking site and wherein the step of measuring the at least one property of the receiver signal involves measuring at least a contrast difference between at least two areas within an image.

17. The method according to claim 16, wherein said determination of said contrast difference between predetermined locations at the docking site comprises determinaition of a contrast difference between predetermined locations corresponding to said least two areas within the image.

18. The method according to claim 17, where said predetermined locations are located substantially at a same distance from the system.

19. A computer program comprising software instructions that, when executed in a computer, performs a method according to claim 12.