Radio frequency jammer method

• US 7,870,813 B2
• Filed: 12/26/2007
• Issued: 01/18/2011
• Est. Priority Date: 02/11/2004
• Status: Expired due to Fees

• Current Assignee: TMC Design Corp.
• Original Assignee: TMC Design Corp.
• Inventors: Ham, Christopher V., Scoughton, Troy E.
• Primary Examiner(s): Chambers; Troy
• Application Number:
  US11/964,288
• Publication Number:
  US 20100282052A1
• Time in Patent Office: 1,119 Days
• Field of Search: 89/11.1, 342 13- 21, 342/61, 342/68, 342 82- 88, 342 89-103, 342/175, 342192-197, 455/1, 86/50
• US Class Current: 89/1.11
• CPC Class Codes: H04K 2203/24 for communication related to weapons
• CPC Class Codes: H04K 3/42 characterized by the control of the jamming frequency or wavelength
• CPC Class Codes: H04K 3/44 characterized by the control of the jamming waveform or modulation type
• CPC Class Codes: H04K 3/45 characterized by including monitoring of the target or target signal, e.g. in reactive jammers or follower jammers for example by means of an alternation of jamming phases and monitoring phases, called "look-through mode"
• CPC Class Codes: H04K 3/92 related to allowing or preventing remote control

Abstract

A method for broadcasting electromagnetic waves such that user-selected electromagnetic receivers are prevented from receiving an intended electromagnetic communication.

Claims

1. A method for preventing the detonation of a radio frequency controlled explosive device, the method comprising:

selecting a frequency range, said range comprising the operating frequency of a receiver of the explosive device; and

transmitting electromagnetic waves comprising noise at frequencies of the selected frequency range, wherein transmitting comprises transmitting electromagnetic waves having a power of at least 1 watt.

2. The method of claim 1 wherein transmitting is performed while varying a location of a transmitter of the electromagnetic radiation.

3. The method of claim 1 further comprising modulating the electromagnetic radiation using at least one mode selected from the group consisting of Δ

P/Δ

T, Δ

F/Δ

T, and frequency hop.

4. The method of claim 1 further comprising varying one or more characteristics of the electromagnetic radiation selected from the group consisting of frequency, bandwidth, modulation mode, and power level.

5. The method of claim 4 further comprising programming the desired characteristics.

6. The method of claim 5 wherein programming the desired characteristics is performed by depot level maintenance personnel.

7. The method of claim 4 wherein the bandwidth is variable from a narrow spike to approximately 40% of the center frequency.

8. The method of claim 1 wherein selecting comprises avoiding frequency ranges of devices which should not be interfered with.

9. The method of claim 1 further comprising downloading a threat database update.

10. The method of claim 1 wherein the noise comprises Gaussian noise.

11. The method of claim 1 wherein transmitting comprises transmitting electromagnetic waves having a power of at least 10 watts.

12. A method for preventing the detonation of a radio-controlled explosive device comprising:

programming one or more frequencies into a processor; and

transmitting electromagnetic waves comprising noise at the one or more frequencies, wherein transmitting comprises transmitting electromagnetic waves having a power of at least 1 watt.

13. The method of claim 12 wherein the one or more frequencies comprises a frequency or range of frequencies that include an operating frequency of the explosive device.

14. The method of claim 12 wherein transmitting comprises transmitting electromagnetic waves having a power of at least 10 watts.

15. The method of claim 12 wherein the noise comprises Gaussian noise.

16. The method of claim 12 further comprising varying one or more characteristics of the electromagnetic waves selected from the group consisting of frequency, bandwidth, modulation mode, and power level.

17. The method of claim 12 wherein the one or more frequencies comprises a single center frequency.

18. The method of claim 12 wherein the one or more frequencies comprises a plurality of frequencies defining a frequency range.