RADAR ACTIVATION MULTIPLE ACCESS SYSTEM AND METHOD

• US 20120050089A1
• Filed: 08/31/2010
• Published: 03/01/2012
• Est. Priority Date: 08/31/2010
• Status: Active Grant

• Current Assignee: Raytheon Company (Rtx Corporation)
• Original Assignee: Raytheon Company (Rtx Corporation)
• Inventors: Gurevich, Marina, Harden, Deanna K.
• Granted Patent: US 8,330,645 B2
• Time in Patent Office: Days
• US Class Current: 342/59
• CPC Class Codes: G01S 13/003 Bistatic radar systems; Multistatic radar systems
• CPC Class Codes: G01S 13/87 Combinations of radar systems, e.g. primary radar and secondary radar
• CPC Class Codes: G01S 7/003 Transmission of data between radar, sonar or lidar systems and remote stations

Abstract

A radar activation multiple access system and method is provided that includes a plurality of radar participant nodes wirelessly connected and forming a radar network and a multiple access unit in communication with the radar network. The multiple access unit includes a scheduler component, a synch component, a priority component and a radar activation component. The scheduler component is configured to schedule a period of operation having a plurality of time divisions within the period of operation. The synch component is configured to synchronize the radar participant nodes within the period of operation. The priority component is configured to assign a priority to individual radar participant nodes in the radar network. The radar activation component is communicatively connected to the radar network and configured to determine a contentious state at a time division in the period of operation. The radar activation component instructs individual nodes to assume the role of transmitter or receiver based on the assigned priority.

Claims

1. A radar activation multiple access system comprising:

a plurality of radar participant nodes wirelessly connected and forming a radar network; and

a multiple access unit in communication with the radar network and including

a scheduler component configured to schedule a period of operation having a plurality of time divisions within the period of operation,

a synch component configured to synchronize the radar participant nodes within the period of operation,

a priority component configured to assign a priority to individual radar participant nodes in the radar network, and

a radar activation component communicatively connected to the radar network and configured to determine a contentious state at a time division in the period of operation and instruct individual nodes to assume the role of transmitter or receiver based on the assigned priority.

2. The system of claim 1, wherein

the assigned priority is a pseudo randomly generated number that is unique among the radar participant nodes in the radar network.

3. The system of claim 1, wherein

the multiple access unit further includes a selection component that adjusts the priority of two or more radar participant nodes based on optimal attributes of one or more radar participant nodes.

4. The system of claim 3, wherein

the adjustment of the priority is based on a pre-defined selection algorithm.

5. The system of claim 3, wherein

the adjustment is based on information about a coverage area of the radar network.

6. The system of claim 1, wherein

the priority component or the radar activation component is configured to assign a unique identification number to the individual radar participant nodes in the radar network.

7. The system of claim 1, wherein

the synchronization component utilizes GPS clock information to synchronize the radar participant nodes with the period of operation.

8. The system of claim 1, wherein

the participant nodes are wirelessly connected in a wireless network with a 2-hop topology.

9. A radar activation multiple access method comprising:

defining a radar network with a plurality of radar participant nodes wirelessly connected;

scheduling at least one period of operation having a plurality of time divisions within the period of operation;

synchronizing the radar participant nodes within the period of operation;

assigning a priority to individual radar participant nodes in the radar network;

determining a contentious state at a time division in the period of operation;

determining the radar participant node with the highest assigned priority; and

instructing the radar participant node with the highest priority to assume the role of transmitter and instructing the remaining radar participant nodes to assume the role of a receiver.

10. The method of claim 9, wherein

the assigning includes assigning a pseudo randomly generated number that is unique among the radar participant nodes in the radar network.

11. The method of claim 9, wherein

the assigning includes adjusting the priority of two or more radar participant nodes based on optimal attributes of one or more radar participant nodes.

12. The method of claim 11, wherein

the adjusting the priority includes basing adjustment on a pre-defined selection algorithm.

13. The method of claim 11, wherein

the adjusting the priority includes basing adjustment on information about a coverage area of the radar network.