Arrangement and Method for the Wireless Transmission of Phase-Critical Signals when the Length of the Transmission is Variable

• US 20090284417A1
• Filed: 05/18/2009
• Published: 11/19/2009
• Est. Priority Date: 05/19/2008
• Status: Active Grant

• Current Assignee: Airbus Defence and Space GmbH
• Original Assignee: Astrium GmbH (Airbus SE)
• Inventors: FRITZEL, Torsten, Steiner, Hans-Juergen
• Granted Patent: US 8,125,621 B2
• Time in Patent Office: Days
• US Class Current: 342/385
• CPC Class Codes: H04L 2027/0067 Phase error detectors
• CPC Class Codes: H04L 25/06 Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
• CPC Class Codes: H04L 25/10 Compensating for variations in line balance
• CPC Class Codes: H04L 27/0014 Carrier regulation of chaotic carriers H04L27/001; for multicarrier receivers H04L27/2657

Abstract

A method and apparatus for wireless transmission of electrically complex or phase-critical signals includes a device for measuring the length of a transmission route to a moving platform, and a device for transmitting complex measuring or reference signals. According to the invention, components of the device for transmitting the signals are arranged adjacent components of the device for measuring the length of the transmission route, so that changes of the length of the transmission route are the same for both devices.

Claims

1. A system comprising:

a device for measuring the length of a transmission route to a moving platform;

a device for transmitting complex measuring or reference signals;

wherein

components of the device for transmitting complex measuring or reference signals are mounted adjacent components of the device for measuring the length of the transmission route to a moving platform, such that the changes of the length of the transmission route are the same for both devices.

2. The system according to claim 1, wherein at least the components of the device for measuring the length of the transmission route and at least the components of the device for transmitting complex measuring or reference signals are mounted on a common motional axis.

3. A system comprising a platform and apparatus according to claim 1.

4. The arrangement according to claim 3, wherein the device is a stationary ground-side device and the platform is a moving platform.

5. The arrangement according to claim 3, wherein the device is a moving device and the platform is a moving platform.

6. The arrangement according to claim 3, wherein the device is a moving device and the platform is stationary.

7. A method for the wireless transmission of phase-critical signals for a system comprising a device for measuring the length of a transmission route to a moving platform;

a device for transmitting complex measuring or reference signals;

wherein components of the device for transmitting complex measuring or reference signals are mounted adjacent components of the device for measuring the length of the transmission route to a moving platform, such that the changes of the length of the transmission route are the same for both devices;

wherein the length of the transmission route is measured isochronously.

8. Apparatus for wireless transmission of phase-critical signals between first and second relatively movable locations, said apparatus comprising:

a wireless device for transmitting or receiving said phase-critical signals via a transmission path between said first location and said second location, said transmission path having a path length that varies in response to relative movement of said first and second locations;

measurement apparatus for measuring said path length; and

apparatus for correcting a phase of said phase-critical signal received at one said first and second locations based on said measured path length;

wherein, said wireless device and said measurement apparatus are mounted adjacent, and in close proximity, to each other, such that changes in said path length are the same for both said transmitter and said measurement apparatus.

9. The apparatus according to claim 8, wherein:

said wireless device and said measurement apparatus are mounted at said first location, which is fixed; and

said second location comprises a movable platform.

10. The apparatus according to claim 8, wherein:

said wireless device and said measurement apparatus are mounted at said first location which is movable; and

said second location is fixed.

11. The apparatus according to claim 8, wherein both of said first and second locations are movable.

12. The apparatus according to claim 9, wherein said signal is transmitted from said first location to said second location.

13. The apparatus according to claim 9, wherein said signal is transmitted from said second location to said first location.

14. The apparatus according to claim 10, wherein said signal is transmitted from said first location to said second location.

15. The apparatus according to claim 10, wherein said signal is transmitted from said second location to said first location.