Remote controlled noise jamming device

• US 6,112,052 A
• Filed: 01/29/1997
• Issued: 08/29/2000
• Est. Priority Date: 01/29/1997
• Status: Expired due to Term

• Current Assignee: Northrop Grumman Systems Corporation (Northrop Grumman Corporation)
• Original Assignee: Northrop Grumman Corporation
• Inventors: Guthrie, Warren E., Rozak, Robert Edward
• Primary Examiner(s): Nguyen, Lee
• Application Number:
  US08/790,915
• Time in Patent Office: 1,308 Days
• Field of Search: 455/1, 455/38.2, 455/68, 455/69, 455/70, 455/92, 455/352, 455/151.1, 455/420, 455/86, 380/6, 340/825.69, 340/825.72, 342/14, 342/15
• US Class Current: 455/1
• CPC Class Codes: H04K 3/41 characterized by the control of the jamming activation or deactivation time control of jamming activation and deactivation time only for the purpose of alternating between jamming mode and target monitoring mode H04K3/45
• CPC Class Codes: H04K 3/42 characterized by the control of the jamming frequency or wavelength
• CPC Class Codes: H04K 3/43 characterized by the control of the jamming power, signal-to-noise ratio or geographic coverage area

Abstract

A remotely operable radio frequency jamming device having a jamming transmitter and a local controller in communication with a remote commander. The local controller has a signal receiver and decoder component for receiving, decoding and causing by electronic command the device to perform a remotely initiated instruction signal. In particular, the receiver and decoder component of the local controller can receive and decode a remotely initiated instruction signal to activate or inactivate the jamming device and thereafter cause by electronic command the activation or deactivation of the device. To effectuate the jamming of enemy radio signals, the receiver and decoder component of the local controller can receive and decode a remotely initiated instruction signal to transmit a selected jamming band from the transmitter of the jamming device, and thereafter cause by electronic command the transmitter to transmit the selected band. The jamming device preferably is operable on low power, and preferably is relatively small so that its presence can be relatively easily hidden.

Claims

1. A remotely operable radio frequency jamming system comprising:

a) a remote commander for sending selectable instructional command signals; and

b) a concealably placeable jamming device comprising;

i) a jamming transmitter;

ii) a local controller in communication with the commander, said controller having a signal receiver and decoder component for receiving and decoding said selectable instructional command signals from the commander, said command signals comprising activation of the jamming transmitter, deactivation of the jamming transmitter, and transmission of a jamming signal of a selected frequency to the jamming transmitter; and

iii) delivery circuitry for relaying from said controller to said jamming transmitter said selectable instructional commands according to said command signals after decoding thereof by said controller.

2. A remotely operable radio frequency jamming system as claimed in claim 1 wherein power transmitted by the jamming transmitter is about 0.1 watt to about 10 watts.

3. A remotely operable radio frequency jamming system as claimed in claim 1 wherein size of the jamming device is from about 15 to about 25 cubic inches.

4. A remotely operable radio frequency jamming system as claimed in claim 1 wherein the receiver and decoder component of the controller can receive and decode selectable instructional command signals over a distance of from about 0.1 km to about 10 km.

5. A remotely operable radio frequency jamming system as claimed in claim 1 wherein the selected frequency of the jamming signal is a selected jamming band.