Method and an apparatus for determining a deviation between an actual direction of a launched projectile and a predetermined direction

• US 10,473,778 B2
• Filed: 03/22/2016
• Issued: 11/12/2019
• Est. Priority Date: 07/02/2004
• Status: Active Grant

• Current Assignee: Trackman A/S
• Original Assignee: Trackman A/S
• Inventors: Tuxen, Fredrik
• Primary Examiner(s): Gregory, Bernarr E
• Application Number:
  US15/077,319
• Publication Number:
  US 20160313441A1
• Time in Patent Office: 1,330 Days
• Field of Search: 342 61, 342 62, 342 66, 342 67
• CPC Class Codes: G01S 13/58 Velocity or trajectory determination systems; Sense-of-movement determination systems
• CPC Class Codes: G01S 13/66 Radar-tracking systems; Analogous systems
• CPC Class Codes: G01S 13/72 for two-dimensional tracking, e.g. combination of angle and range tracking, track-while-scan radar
• CPC Class Codes: G01S 13/867 Combination of radar systems with cameras
• CPC Class Codes: G01S 13/88 Radar or analogous systems specially adapted for specific applications electromagnetic prospecting or detecting of objects, e.g. near-field detection, G01V3/00
• CPC Class Codes: G01S 7/52 of systems according to group G01S15/00

Abstract

A system and method for relating radar data to an image to track the flight of a path of a projectile includes a radar, an imager providing an image of an area into which a projectile is to be launched, a controller receiving the image and data from the radar relative to at least a portion of a trajectory of the projectile, the controller generating trajectory data by correlating the radar data and the image to determine the portion of the trajectory relative to at least one feature in the image, and a display displaying the trajectory data.

Claims

1. A system for relating radar data to an image to track the flight of a projectile comprising:

a radar providing radar data of at least a portion of a trajectory of a projectile;

an imager providing an image of an area into which the projectile is to be launched, the image including a feature in the area;

a controller receiving the image from the imager and the radar data from the radar, the controller generating trajectory data of the projectile relative to the feature by correlating the radar data with the image; and

a display displaying the trajectory data.

2. The system according to claim 1, wherein the controller receives an identification of a target within the image, the controller identifying a target line connecting the target and a launch position of the projectile.

3. The system according to claim 2, wherein the controller alters the image to display the trajectory data within the image.

4. The system according to claim 3, wherein the trajectory data is displayed as numerical data.

5. The system according to claim 2, wherein the controller determines a deviation value between the portion of the trajectory and the target line, and wherein the display displays the deviation value.

6. The system according to claim 2, wherein the target is identified by input received by the controller from a user.

7. The system according to claim 6, wherein the user input is generated by interaction with the image.

8. The system according to claim 2, wherein the controller determines a distance from the radar to the target.

9. The system according to claim 8, wherein the controller determines the distance from the radar to the target based on a comparison of a known size of a feature in the image with a size in the image of the feature.

10. The system according to claim 9, wherein the controller determines a launch direction of the projectile indicating an initial direction of the projectile as it leaves the launch position.

11. The system according to claim 2, wherein the controller receives data corresponding to a distance from the imager to the target and determines based on the distance from the imager to the target and the data from the radar a deviation of the projectile between a flight path of the projectile and the target line.

12. The system according to claim 2, wherein the controller identifies a coordinate system based on a horizontal axis extending through the launch position and the target.

13. The system according to claim 2, wherein the controller identifies the launch position as a first data point of the projectile in motion.

14. The system according to claim 1, wherein the controller identifies a landing position of the projectile.

15. The system according to claim 1, wherein the controller displays the trajectory data while the projectile is in flight.

16. The system of claim 1, wherein the projectile is a sports ball.

17. A device for coordinating radar data and image data to determine the trajectory of a projectile, comprising:

a controller receiving an image, from an imager, of an area into which a projectile is to be launched, the image including a feature in the area, and radar data from a radar relative of at least a portion of a trajectory of the projectile, the controller generating trajectory data of the projectile relative to the feature by correlating the radar data with the image.

18. The device of claim 17, wherein the controller identifies a target within the image, the controller identifying a target line connecting the target and a launch position of the projectile.

19. The device of claim 18, wherein the controller alters the image to include the trajectory data within the image and to display the target line within the image.

20. The device of claim 18, wherein controller receives input identifying the target and identifies the target as an intersection of vertical and horizontal reference lines.

21. The device of claim 17, wherein the radar is positioned so that the portion of the trajectory is within a field of view of the radar and wherein the controller receives the image from an imager having a field of view including the target and the portion of the trajectory.

22. A method for coordinating radar data and image data to track a flight of a projectile comprising the steps of:

receiving by a controller an image of an area into which a projectile is to be launched, the image including a feature in the area, and radar data of at least a portion of a trajectory of a projectile traveling through a field of view represented by the image;

generating by the controller trajectory data of the projectile relative to the feature by correlating the radar data with the image; and

displaying the trajectory data.

23. The method according to claim 22, further comprising the step of identifying a target within the image and a launch point of the projectile and determining a deviation of the projectile from a path connecting the launch point to the target.

24. The method according to claim 23, wherein a distance from the launch position to the target is input by a user.

25. The method according to claim 23, wherein a distance to the target is determined by the controller based on a comparison of an angular extent of an element within the image and a known size of the element.

26. The method according to claim 22, wherein the controller correlates the radar data and the image based on data corresponding to a position of the imager relative to the radar.