Generating radar cross-section signatures

• US 8,390,508 B1
• Filed: 04/05/2010
• Issued: 03/05/2013
• Est. Priority Date: 04/05/2010
• Status: Active Grant

• Current Assignee: Raytheon Company (Rtx Corporation)
• Original Assignee: Raytheon Company (Rtx Corporation)
• Inventors: Lee, Chul J., Gilstrap, Richard A.
• Primary Examiner(s): Brainard, Timothy A
• Application Number:
  US12/753,982
• Publication Number:
  US 20130038486A1
• Time in Patent Office: 1,065 Days
• Field of Search: 342/13, 342/175
• US Class Current: 342/90
• CPC Class Codes: G01S 7/412 based on a comparison between measured values and known or stored values

Abstract

In one aspect, a method to generate radar cross section (RCS) signatures, includes determining a spectrum of an object and using the spectrum of the object to generate RCS signatures of a plurality of objects. In another aspect, an apparatus to generate radar cross section (RCS) signatures includes circuitry to determine a spectrum of an object; and use the spectrum of the object to generate RCS signatures of a plurality of objects. In a further aspect, an article includes a machine-readable medium that stores executable instructions to generate radar cross section signatures (RCS). The executable instructions cause a machine to determine a spectrum of an object and use the spectrum of the object to generate RCS signatures of a plurality of objects.

Claims

1. A method to generate radar cross section (RCS) signatures, comprising:

determining a spectrum of a first object using a computer; and

using the spectrum of the first object to generate RCS signatures of a plurality of objects, using the computer, by applying the spectrum of the first object to each of the plurality of objects, using the spectrum of the first object comprising;

interpolating time;

selecting frequencies to match a center frequency and bandwidth of a radar pulse;

resampling to frequency sampling of radar to match a range bin size; and

shifting and applying trajectory phase and scaling.

2. The method of claim 1 wherein using the spectrum of the first object to generate RCS signatures of a plurality of objects comprises using a lookup table representing the spectrum of the first object.

3. The method of claim 1 wherein determining a spectrum of the first object comprises determining a frequency spectrum of the first object.

4. The method of claim 1 wherein determining a spectrum of the first object comprises determining a spectrum of an object comprising chaff.

5. The method of claim 4 wherein using the spectrum of the first object to generate RCS signatures of a plurality of objects comprises using the spectrum of the first object comprising chaff to generate RCS signatures of a plurality of objects comprising chaff.

6. The method of claim 1, further comprising:

determining a spectrum of a first macro-object object using the computer; and

using the spectrum of the first macro-object to generate RCS signatures of a plurality of macro-objects, using the computer, by applying the spectrum of the first macro-object to each of the plurality of macro-objects,

wherein using the spectrum of the first macro-object to generate RCS signatures of a plurality of macro-objects comprises;

interpolating time;

selecting frequencies to match a center frequency and bandwidth of a radar pulse;

resampling to frequency sampling of radar to match a range bin size; and

shifting and applying trajectory phase and scaling.

7. The method of claim 6 wherein determining the spectrum of first object comprises determining a spectrum of a chaff puck, and

wherein determining the spectrum of a first macro-object comprises determining a spectrum of a chaff dispenser.

8. An apparatus to generate radar cross section (RCS) signatures, comprising:

circuitry configured to;

determine a spectrum of a first object; and

use the spectrum of the first object to generate RCS signatures of a plurality of objects, by applying the spectrum of the first object to each of the plurality of objects,

wherein the circuitry configured to use the spectrum of the first object comprises circuitry configured to;

interpolate time;

select frequencies to match a center frequency and bandwidth of a radar pulse;

resample to frequency sampling of radar to match a range bin size; and

shift and apply trajectory phase and scaling.

9. The apparatus of claim 8 wherein the circuitry comprises at least one of a processor, a memory, programmable logic and logic gates.

10. The apparatus of claim 8 wherein the circuitry to use the spectrum of the first object to generate RCS signatures of a plurality of objects comprises circuitry to use a lookup table representing the spectrum of the first object.

11. The apparatus of claim 8 wherein the circuitry to determine a spectrum of the first object comprises circuitry to determine a frequency spectrum of the first object.

12. The apparatus of claim 8 wherein the circuitry to determine a spectrum of the first object comprises circuitry to determine a spectrum of an object comprising chaff.

13. The apparatus of claim 12 wherein the circuitry to use the spectrum of the first object to generate RCS signatures of a plurality of objects comprises circuitry to use the spectrum of the first object comprising chaff to generate RCS signatures of a plurality of objects comprising chaff.

14. The apparatus of claim 8 wherein the circuitry is further configured to:

determine a spectrum of a first macro-object object using the circuitry; and

use the spectrum of the first macro-object to generate RCS signatures of a plurality of macro-objects, using the circuitry, by applying the spectrum of the first macro-object to each of the plurality of macro-objects,

wherein the circuitry configured to use the spectrum of the first macro-object to generate RCS signatures of a plurality of macro-objects comprises circuitry configured to;

interpolate time;

select frequencies to match a center frequency and bandwidth of a radar pulse;

resample to frequency sampling of radar to match a range bin size; and

shift and apply trajectory phase and scaling,

wherein the circuitry configured to determine the spectrum of first object comprises circuitry configured to determine a spectrum of a chaff puck, and

wherein the circuitry configured to determine the spectrum of a first macro-object comprises circuitry configured to determine a spectrum of a chaff dispenser.

15. An article, comprising:

a non-transitory machine-readable medium that stores executable instructions to generate radar cross section signatures (RCS), the executable instructions causing a machine to;

determine a spectrum of an object; and

use the spectrum of the object to generate RCS signatures of a plurality of objects, by applying the spectrum of the first object to each of the plurality of objects,

wherein the instructions causing the machine to use the spectrum of the first object comprises instructions causing the machine to;

interpolate time;

elect frequencies to match a center frequency and bandwidth of a radar pulse;

resample to frequency sampling of radar to match a range bin size; and

shift and apply trajectory phase and scaling.

16. The article of claim 15 wherein the instructions causing the machine to use the spectrum of the first object to generate RCS signatures of a plurality of objects comprises instructions causing the machine to use a lookup table representing the spectrum of the first object.

17. The article of claim 15 wherein the instructions causing the machine to determine a spectrum of the first object comprises instructions causing the machine to determine a frequency spectrum of the first object.

18. The article of claim 15 wherein the instructions causing the machine to determine a spectrum of the first object comprises instructions causing the machine to determine a spectrum of an object comprising chaff.

19. The article of claim 18 wherein the instructions causing the machine to use the spectrum of the first object to generate RCS signatures of a plurality of objects comprises instructions causing the machine to use the spectrum of the first object comprising chaff to generate RCS signatures of a plurality of objects comprising chaff.

20. The article of claim 15 further comprising instructions causing the machine to:

determine a spectrum of a first macro-object object using the machine; and

use the spectrum of the first macro-object to generate RCS signatures of a plurality of macro-objects, using the machine, by applying the spectrum of the first macro-object to each of the plurality of macro-objects,

wherein the instructions causing the machine to use the spectrum of the first macro-object to generate RCS signatures of a plurality of macro-objects comprises instructions causing the machine to;

interpolate time;

select frequencies to match a center frequency and bandwidth of a radar pulse;

resample to frequency sampling of radar to match a range bin size; and

shift and apply trajectory phase and scaling,

wherein the instructions causing the machine to determine the spectrum of first object comprises instructions causing the machine to determine a spectrum of a chaff puck, and

wherein the instructions causing the machine to determine the spectrum of a first macro-object comprises instructions causing the machine to determine a spectrum of a chaff dispenser.