COGNITIVE TRANSMISSION SWITCHING

• US 20170293024A1
• Filed: 04/07/2016
• Published: 10/12/2017
• Est. Priority Date: 04/07/2016
• Status: Abandoned Application

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: Villeval, Shahar, Bilik, Igal, Tabrikian, Joseph
• Application Number:
  US15/092,759
• Publication Number:
  US 20170293024A1
• Time in Patent Office: Days
• CPC Class Codes: G01S 13/42 Simultaneous measurement of distance and other co-ordinates indirect measurement G01S13/46
• CPC Class Codes: G01S 13/52 Discriminating between fixed and moving objects or between objects moving at different speeds
• CPC Class Codes: G01S 13/58 Velocity or trajectory determination systems; Sense-of-movement determination 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 13/865 Combination of radar systems with lidar systems
• CPC Class Codes: G01S 13/867 Combination of radar systems with cameras
• CPC Class Codes: G01S 13/878 Combination of several spaced transmitters or receivers of known location for determining the position of a transponder or a reflector G01S13/874 takes precedence
• CPC Class Codes: G01S 13/931 of land vehicles
• CPC Class Codes: G01S 2013/0236 Special technical features
• CPC Class Codes: G08G 1/166 for active traffic, e.g. moving vehicles, pedestrians, bikes

Abstract

A cognitive transmission switching array radar system to determine a location of a target and method of performing cognitive transmission switching with an array radar system involve N transmit antenna elements. Aspects include obtaining a crude estimation for the location of the target, and selecting M channels for transmission based on the crude estimation, the M channels corresponding with a subset of the N transmit antenna elements. Processing reflections resulting from the M channels is done to determine the location of the target.

Claims

1. A method of performing cognitive transmission switching with an array radar system including N transmit antenna elements to determine a location of a target, the method comprising:

obtaining a crude estimation for the location of the target;

selecting M channels for transmission based on the crude estimation, wherein the M channels correspond with a subset of the N transmit antenna elements; and

processing reflections resulting from the M channels to determine the location of the target.

2. The method according to claim 1, wherein the obtaining the crude estimation is based on information from another sensor.

3. The method according to claim 1, wherein the obtaining the crude estimation is based on selecting L channels for transmission, the L channels corresponding with fewer than the N transmit antenna elements and the L channels being different than the M channels.

4. The method according to claim 3, wherein the selecting L channels for transmission is based on a uniform linear array configuration of the corresponding transmit antenna elements.

5. The method according to claim 3, wherein the selecting L channels is performed iteratively with a different selection or number of the L channels in each iteration to obtain the crude estimate.

6. The method according to claim 1, wherein the selecting the M channels is based on an error minimization criteria.

7. The method according to claim 1, further comprising receiving the reflections resulting from the M channels with one receive antenna.

8. The method according to claim 1, further comprising receiving the reflections resulting from the M channels with one or more receive antennas.

9. A cognitive transmission switching array radar system to determine a location of a target, the system comprising:

N transmit antenna elements arranged in an array; and

a processor configured to obtain a crude estimate for the location of the target, select M channels for transmission based on the crude estimation, the M channels corresponding with a subset of the N transmit antenna elements, and process reflections resulting from the M channels to determine the location of the target.

10. The system according to claim 9, wherein the processor obtains the crude estimate based on information from another sensor.

11. The system according to claim 9, wherein the processor selects L channels for transmission to obtain the crude estimate for the location of the target, the L channels corresponding with fewer than the N transmit antenna elements and the L channels being different than the M channels.

12. The system according to claim 11, wherein the processor selects the L channels based on a uniform linear array configuration of the corresponding transmit antenna elements.

13. The system according to claim 11, wherein the processor selects the L channels iteratively with a different selection or number of the L channels in each iteration to obtain the crude estimate.

14. The system according to claim 9, wherein the processor selects the M channels based on an error minimization criteria.

15. The system according to claim 9, further comprising one receive antenna to receive the reflections resulting from the M channels.

16. The system according to claim 9, further comprising an array of receive antennas configured to receive the reflections resulting from the M channels.