STATISTICAL MOVEMENT ANALYSIS

• US 20140300506A1
• Filed: 04/04/2013
• Published: 10/09/2014
• Est. Priority Date: 04/04/2013
• Status: Active Grant

• Current Assignee: Raytheon Company (Rtx Corporation)
• Original Assignee: Raytheon Company (Rtx Corporation)
• Inventors: Teter, Marcus Alton, Tryon, Mark Frank
• Granted Patent: US 9,170,324 B2
• Time in Patent Office: Days
• US Class Current: 342/104
• CPC Class Codes: G01S 13/9029 specially adapted for moving target detection within a single SAR image or within multiple SAR images taken at the same time
• CPC Class Codes: G01S 7/412 based on a comparison between measured values and known or stored values
• CPC Class Codes: G01S 7/414 Discriminating targets with respect to background clutter
• CPC Class Codes: G01S 7/415 Identification of targets based on measurements of movement associated with the target

Abstract

Statistical movement analysis method that includes defining one or more movement signature types, wherein a movement signature type includes a set of movement parameters and values for the set of movement parameters and receiving data for objects monitored by a radar system at a plurality of times, the data including values acquired for the set of movement parameters. The method also includes discriminating the data for the monitored objects by comparing movement signatures of two or more of the monitored objects for a difference of statistical significance and characterizing the monitored objects based on the movement signatures of the monitored objects. The method also includes identifying one or more of the monitored objects by comparing the received data for a monitored object with the movement signature type to determine if any of the objects monitored by the radar system are moving consistent with the movement signature type.

Claims

1. A method for statistical movement analysis of parameters for objects monitored by a radar system, comprising:

defining one or more movement signature types, wherein a movement signature type includes a set of movement parameters and values for the set of movement parameters;

receiving data for objects monitored by a radar system at a plurality of times, the data including values acquired for the set of movement parameters for the objects monitored by the radar system;

discriminating the data for the monitored objects by comparing movement signatures of two or more of the monitored objects for a difference of statistical significance;

characterizing the monitored objects based on the movement signatures of the monitored objects; and

identifying one or more of the monitored objects by comparing the received data for a monitored object with the movement signature type to determine if any of the objects monitored by the radar system are moving consistent with the movement signature type.

2. The method of claim 1, comprising defining a plurality of movement signature types and comparing the received data with the plurality of movement signature types to identify which objects monitored by the radar system are moving consistent with which movement signature type.

3. The method of claim 1, comprising characterizing one or more object groups within the objects monitored by the radar system based on the data for the set of movement parameters for the objects.

4. The method of claim 1, comprising identifying one or more of the objects monitored by the radar system as belonging to a first object group if the data for the set of movement parameters for the one or more objects are consistent with the movement signature type.

5. The method of claim 1, wherein the set of movement parameters are averages of one or more of latitude, longitude, radial velocity, signal-to-noise ratio, arrival time or uncertainty for latitude, longitude, radial velocity, signal-to-noise ratio, or arrival time.

6. The method of claim 1, wherein a movement signature type includes movement parameters and values for the movement parameters for different points in time.

7. The method of claim 1, comprising outputting data corresponding to a graphical representation of the movement signature type and the data for the movement parameters for the objects monitored by the radar system.

8. A method for statistical movement analysis of parameters of objects monitored by a radar system, comprising:

defining a milling movement signature, wherein the milling movement signature includes a set of movement parameters and values for the set of movement parameters;

defining a herding movement signature, wherein the herding movement signature includes the set of movement parameters and values for the set of movement parameters;

receiving data for objects monitored by a radar system at a plurality of times, the data including values acquired for the set of movement parameters for the monitored objects, wherein the set of movement parameters and values being the movement signature of a monitored object;

discriminating the data for the monitored objects at a plurality of times by comparing movement signatures of two or more of the monitored objects for a difference of statistical significance;

characterizing the monitored objects at a plurality of times based on the movement signatures of the monitored objects; and

identifying one or more of the monitored objects by comparing the received data for a monitored object with the milling movement signature and the herding movement signature to determine if the monitored object is moving consistent with the milling movement signature or the herding movement signature.

9. A ground moving target indicator statistical movement analysis system;

comprising;

a processor; and

a memory, the memory including code representing instructions that when executed cause the processor to;

receive data for objects monitored by a radar system at a plurality of times, the data including values acquired for a set of movement parameters for the monitored objects, wherein the set of movement parameters and values being the movement signature of a monitored object,

discriminate the data for the monitored objects by comparing movement signatures of two or more data objects for a difference of statistical significance,

characterize the monitored objects based on the movement signatures of the monitored objects,

identify one or more of the monitored objects by comparing the objects'"'"' movement signatures with one or more movement signature types to determine if any of the objects monitored by the radar system are moving consistent with the one or more movement signature types.

10. The system of claim 9, wherein the memory includes code representing instructions that when executed cause the processor to assign one or more of the objects monitored by the tracking system to a first object group if the movement parameters for the one or more objects are consistent with a movement signature associated with the first object group.

11. The system of claim 9, wherein the movement parameters are averages of one or more of latitude, longitude, radial velocity, signal-to-noise ratio, arrival time or uncertainty for latitude, longitude, radial velocity, signal-to-noise ratio, or arrival time.

12. The system of claim 9, wherein a movement signature includes movement parameters and values for the movement parameters for different points in time.

13. The system of claim 9, comprising an output for displaying a graphical representation of the movement signature and the data for the movement parameters for the objects monitored by the radar system.