Method and device for detecting correction information for an antenna of a vehicle

Patent metadata

Field	Value
Publication number	US-11327182-B2
Application number	US-201816772949-A
Country	US
Kind code	B2
Filing date	Nov 8, 2018
Priority date	Dec 15, 2017
Publication date	May 10, 2022
Grant date	May 10, 2022

Abstract

A method and corresponding device for detecting correction information for an antenna for receiving data of a satellite of a satellite navigation system includes the steps of determining first distance information of the antenna relative to a satellite of a satellite navigation system, capturing position information and orientation information of the antenna on the basis of sensor information, determining second distance information of the antenna relative to the satellite on the basis of the position information captured using sensor information, detecting a deviation of the first distance information from the second distance information, determining correction information on the basis of the detected deviation, and storing, in a data memory, the correction information regarding the orientation information captured by the sensor information. The correction information can be used in particular for correcting an angle-dependent phase center offset.

First claim

The invention claimed is:

1. A method for detecting correction information for an antenna for receiving data of a satellite of a satellite navigation system, having the steps of:
determining first distance information of an antenna relative to a satellite of a satellite navigation system,
capturing position information and orientation information of the antenna on the basis of sensor information,
determining second distance information of the antenna relative to the satellite on the basis of the position information captured on the basis of the sensor information,
detecting a deviation of the first distance information from the second distance information,
determining correction information on the basis of the detected deviation, and
storing, in a data memory, the correction information regarding the orientation information captured on the basis of the sensor information,
wherein initial position information and initial orientation information of the antenna are captured on the basis of the sensor information at a starting point of a calibration journey.

2. The method according to claim 1 , wherein the method is at least partially executed during the calibration journey with a vehicle having the antenna.

3. The method according to claim 2 , wherein during the calibration journey the position information and the orientation information are captured on the basis of the sensor information regarding a change in terms of the initial position information and the initial orientation information at the starting point.

4. The method according to claim 3 , wherein the sensor information or values stored in a data memory are used as the initial position information or the initial orientation information at the starting point of the calibration journey.

5. The method according to claim 4 , wherein the initial position information or the initial orientation information obtained by the sensor information at the starting point of the calibration journey is based on information fused from sensor information by a state estimator.

6. The method according to claim 3 , wherein the initial position information and the initial orientation information at the starting point of the calibration journey or the position information and the orientation information during the calibration journey are detected by the vehicle's own sensor technology or a reference measuring device.

7. The method according to claim 2 , wherein a range driven at least once during the calibration journey is substantially circular or elliptical or has a plurality of changes of direction.

8. The method according to claim 2 , wherein a plurality of calibration journeys are carried out at different times.

9. The method according to claim 2 , wherein at least a plurality of correction information of the antenna is determined on the basis of the detected deviations and the correction information is not stored in the data memory during the calibration journey.

10. The method according to claim 2 , wherein a plurality of correction information is determined on the basis of the detected deviations and the correction information is stored in the data memory during the calibration journey.

11. The method according to claim 1 , wherein the determination of the correction information is carried out on the basis of the detected deviations by optimization calculation.

12. The method according to claim 11 , wherein measuring signals of a reference measuring technology are used as comparative values for the optimization calculation in order to determine the correction information.

13. The method according to claim 1 , wherein the orientation with respect to a global coordinate system is determined using a plurality of the detected correction information.

14. The method according to claim 1 , further comprising determining by optimization calculation at which orientation smallest residues are produced for a plurality of detected correction information, wherein the orientation determined in such a way is deemed to be an actual orientation.

15. The method according to claim 1 , wherein the correction information is used for correcting an angle-dependent phase center offset of the antenna.

16. The method according to claim 15 , wherein in order to correct the angle-dependent phase center offset, the first distance information of the antenna is corrected using the correction information.

17. The method according to claim 15 , wherein in order to correct the angle-dependent phase center offset, an absolute value of the correction information is deducted from a value of the first distance information of the antenna.

18. The method according to claim 1 , wherein the correction information is used for correcting an angle-dependent phase center offset regarding an antenna reference point of the antenna.

19. A device for detecting correction information for an antenna, the device comprising:
an electronic control unit, and
an antenna for receiving data of a satellite navigation system, wherein the electronic control unit is configured to:
determine first distance information of the antenna relative to a satellite of a satellite navigation system,
capture position information and orientation information of the antenna on the basis of sensor information,
determine second distance information of the antenna relative to the satellite on the basis of the position information captured on the basis of the sensor information,
detect a deviation of the first distance information from the second distance information,
determine correction information on the basis of the detected deviation, and
store, in a data memory, the correction information regarding the captured orientation information,
wherein initial position information and initial orientation information of the antenna are captured on the basis of the sensor information at a starting point of a calibration journey.

Assignees

• Continental Teves Ag & Co Ohg

Inventors

• Zalewski Michael
• Stählin Ulrich

Classifications

• G01S19/23 Primary

  Testing, monitoring, correcting or calibrating of receiver elements · CPC title

• G01S19/36

  relating to the receiver frond end · CPC title

• G01S19/235 Primary

  Calibration of receiver components · CPC title