System and method for detection of emitter signals using multiple intercept rules

• US 7,176,826 B2
• Filed: 12/28/2005
• Issued: 02/13/2007
• Est. Priority Date: 11/18/2002
• Status: Active Grant

• Current Assignee: Lockheed Martin Corporation (Martin Marietta Corporation)
• Original Assignee: Lockheed Martin Corporation (Martin Marietta Corporation)
• Inventors: Gounalis, Anthony J.
• Primary Examiner(s): Sotomayor; John B.
• Application Number:
  US11/320,119
• Publication Number:
  US 20060097904A1
• Time in Patent Office: 412 Days
• Field of Search: 342 13- 15, 342/89, 342/90, 342/98, 342/99, 342/195
• US Class Current: 342/13
• CPC Class Codes: G01S 7/021 Auxiliary means for detecting or identifying radar signals or the like, e.g. radar jamming signals

Abstract

A system and method is provided for detecting emitter signals and for determining a scan strategy for a receiver system that receives such emitter signals. A rule-based system is provided for determining how emitters should be detected by a detection system. Rules may be used to prioritize certain emitters with respect to other emitters. The rules may also specify parameters for emitter modes, such as probability of intercept, turn-on range, detect-by range, tolerance, tolerance direction, scan periods, and other parameters. The rules may be used to compute the revisit time for the receiver. Multiple sets of rules may be created and a scan strategy may be computed based upon the selected rule set.

Claims

1. A method for detecting a signal from a source, using a receiver, wherein the source transmits the signal in a portion of the frequency spectrum, and wherein the method comprises acts of:

determining a first method for detecting the signal; and

determining at least one user-defined rule that defines, at least in part, a first revisit time for the source, wherein the first revisit time for the source defines, at least in part, how frequently the receiver retunes to the portion of the frequency spectrum when the receiver is configured according to the first method for detecting the signal.

2. The method according to claim 1, further comprising acts of determining a second method for detecting the signal, and determining at least one user-defined rule that defines, at least in part, a second revisit time for the source, wherein the second revisit time for the source defines, at least in part, how frequently the receive retunes to the portion of the frequency spectrum when the receiver is configured according to the second method for detecting the signal.

3. The method according to claim 2, further comprising an act of determining, based on at least one of the at least one rule that defines, at least in part, the first revisit time for the source and at least one rule that defines, at least in part, the second revisit time for the source, which of the first and second detecting methods is used to detect the signal.

4. The method according to claim 2, further comprising an act of providing a user a capability to choose one of the first and second detecting methods to detect the signal.

5. The method according to claim 1, wherein the at least one rule indicates that the signal should not be observed, and wherein the method further comprises an act of evaluating whether the signal should be detected using the at least one rule.

6. The method according to claim 1, wherein the at least one rule indicates that the signal should be assigned default observation parameters that define how the signal is observed, and wherein the method further comprises an act of evaluating whether the signal should be detected using the at least one rule.

7. The method according to claim 1, wherein the at least one rule indicates that at least one other rule should be evaluated with the at least one rule, and wherein the method further comprises an act of selecting one of the at least one rule and the at least one other rule having the most difficult solution to detect the signal.

8. The method according to claim 1, wherein the at least one rule indicates that at least one other rule should be evaluated with the at least one rule, and wherein the method further comprises an act of selecting one of the at least one rule and the at least one other rule having the least difficult solution to detect the signal.

9. The method according to claim 1, further comprising an act of determining, for the first method for detecting the signal, the first revisit time for the source.

10. The method according to claim 2, comprising an act of determining, for the second method for detecting the signal, the second revisit time for the source.

11. A computer-readable medium having instructions stored thereon that, as a result of being executed by a computer, instruct the computer to perform a method for detecting a signal from a source, using a receiver, wherein the source transmits the signal in a portion of the frequency spectrum, and wherein the method comprises acts of:

determining a first method for detecting the signal; and

determining at least one user-defined rule that defines, at least in part, a first revisit time for the source, wherein the first revisit time for the source defines, at least in part, how frequently the receiver retunes to the portion of the frequency spectrum when the receiver is configured according to the first method for detecting the signal.

12. The computer-readable medium according to claim 11, further comprising acts of determining a second method for detecting the signal, and determining at least one user-defined rule that defines, at least in part, a second revisit time for the source, wherein the second revisit time for the source defines, at least in part, how frequently the receive retunes to the portion of the frequency spectrum when the receiver is configured according to the second method for detecting the signal.

13. The computer-readable medium according to claim 12, wherein the method further comprises an act of determining, based on at least one of the at least one rule that defines, at least in part, the first revisit time and at least one rule that defines, at least in part, the second revisit time, which of the first and second detecting methods is used to detect the signal.

14. The computer-readable medium according to claim 12, wherein the method further comprises an act of providing a user a capability to choose one of the first and second detecting methods to detect the signal.

15. The computer-readable medium according to claim 11, wherein the at least one rule indicates that the signal should not be observed, and wherein the method further comprises an act of evaluating whether the signal should be detected using the at least one rule.

16. The computer-readable medium according to claim 11, wherein the at least one rule indicates that the signal should be assigned default observation parameters that define how the signal is observed, and wherein the method further comprises an act of evaluating whether the signal should be detected using the at least one rule.

17. The computer-readable medium according to claim 11, wherein the at least one rule indicates that at least one other rule should be evaluated with the at least one rule, and wherein the method further comprises an act of selecting one of the at least one rule and the at least one other rule having the most difficult solution to detect the signal.

18. The computer-readable medium according to claim 11, wherein the at least one rule indicates that at least one other rule should be evaluated with the at least one rule, and wherein the method further comprises an act of selecting one of the at least one rule and the at least one other rule having the least difficult solution to detect the signal.

19. The computer-readable medium according to claim 11, wherein the method further comprises an act of determining, for the first method for detecting the signal, the first revisit time for the source.

20. The computer-readable medium according to claim 12, wherein the method further comprises an act of determining, for the second method for detecting the signal, the second revisit time for the source.