This application relates to a jamming signal generating apparatus. In one aspect, the jamming signal generating apparatus includes a signal analyzer configured to perform measurement and analysis of a radar reception signal, and a radio frequency (RF) source signal output device configured to receive the radar reception signal and to output a video signal by reflecting the measurement and the analysis. The jamming signal generating apparatus may also include a frequency up converter configured to output a jamming signal and a jamming transmission signal measurement device configured to receive the video signal and the jamming signal and to obtain a jamming to signal ratio (JSR).

Systems and methods for preventing flight of one or more Unmanned Aerial Vehicles (UAVs) in no-fly zones include receiving one or more no-fly zones each defined as geo-fences with associated coordinates; preventing one or more UAVs from entering the one or more no-fly zones by one or more of: transmitting the geo-fences to the one or more UAVs, transmitting avoidance commands to the one or more UAVs from an avoidance device located at a no-fly zone, and disrupting radio communication to the one or more UAVs from the avoidance device.

A portable Electromagnetic Countermeasure (ECM) device is disclosed for military and civilian population protection from electromagnetic communications and attack, including cell phones, radios, radio-triggered explosive devices, and other personal and portable devices comprising transmitters and receivers. The portable ECM device is usable by a person such as a soldier or policeman to protect themselves and other people around them from spy, guerrilla, military and terrorist threats. The portable (ECM) device comprises a first antenna and a second antenna, both to communicate radio signals with a software defined radio (SDR), and a control pack having a microprocessor operable by remote network connection, or by a mode selector on board the device, to control the SDR according to a mode selected, to receive, produce, and classify radio signals.

Disclosed is a radio frequency communication and jamming device configured for physically secured friendly radio frequency communication and for jamming hostile radio frequency communication, the radio frequency communication and jamming device including: an antenna arrangement having a transmission section for transmitting outgoing signals and a receiving section for receiving incoming signals; a receiver device configured for extracting an incoming information signal from the incoming signals received via the receiving section of the antenna arrangement in a receiving frequency band; a jamming generator configured for generating at least one jamming signal for jamming at least one jamming frequency band, wherein the jamming signal is transmitted as one of the outgoing signals via the transmission section, wherein the at least one jamming frequency band includes the receiving frequency band; and a self-interference cancellation device configured for cancelling portions of the at least one jamming signal in the incoming signals received via the receiving section at least in the receiving frequency band.

A system for disrupting Radio Frequency communication of a plurality of unmanned aircraft. The system comprises: a directional antenna; a transmitter; a drive system connected to the directional antenna and configured to move the directional antenna; and a control system. The control system causes the transmitter to generate a signal waveform configured to disrupt Radio Frequency communication of an unmanned aircraft for emission by the directional antenna, and causes the drive system to move the directional antenna such that each of the plurality of unmanned aircraft is irradiated intermittently by the emitted radiation. Each of the plurality of unmanned aircraft is irradiated for a first period of time and not irradiated for a second period of time, the second period of time is less than or equal to 5 seconds.

A dynamically-reconfigurable multiband multiprotocol communications jamming system and method is provided that are particularly suited for the generation of effective radio-frequency waveforms/noise output that successively translates up and down the RF spectrum. The system and method are particularly suited for strategically targeting specific frequencies in order to disrupt a communications network or networks, and can be rapidly deployed via delivery platforms, such as artillery and other projectile mechanisms, remote operated vehicles (unmanned aerial, sea or land systems) or targeted air or land delivery via manned assets or automated or robotic support means, or manual delivery by personnel.

A system for providing integrated detection and deterrence against an unmanned vehicle including but not limited to aerial technology unmanned systems using a detection element, a tracking element, an identification element and an interdiction or deterrent element. Elements contain sensors that observe real time quantifiable data regarding the object of interest to create an assessment of risk or threat to a protected area of interest. This assessment may be based e.g., on data mining of internal and external data sources. The deterrent element selects from a variable menu of possible deterrent actions. Though designed for autonomous action, a Human in the Loop may override the automated system solutions.

A security signal transmission method performed by a first communication node includes estimating a radio channel between the first communication node and a second communication node; classifying all subcarriers into a first subcarrier group for transmitting a data signal and a second subcarrier group for transmitting a jamming signal based on estimated channel information; generating data symbol(s) by allocating the data signal to subcarriers of the first subcarrier group; generating jamming symbol(s) by allocating the jamming signal to subcarriers of the second subcarrier group; generating a first control symbol to which a first control signal is mapped, the first control signal including a first reference value used to restore the data symbols at the second communication node; and transmitting the data symbol(s), the jamming symbol(s), and the first control symbol to the second communication node.

This application relates to a jamming signal generating apparatus. In one aspect, the jamming signal generating apparatus includes a signal analyzer configured to perform measurement and analysis of a radar reception signal, and a radio frequency (RF) source signal output device configured to receive the radar reception signal and to output a video signal by reflecting the measurement and the analysis. The jamming signal generating apparatus may also include a frequency up converter configured to output a jamming signal and a jamming transmission signal measurement device configured to receive the video signal and the jamming signal and to obtain a jamming to signal ratio (JSR).

This application relates to a non-communication electronic warfare system design analysis system based on engineering modeling. In one aspect, the system includes a scenario unit transmitting a simulation threat signal corresponding to an input scenario and a threat signal simulator transmitting an actual threat signal. The system may also include an electronic warfare support receiving model unit allocating a jamming technique. The system may further include an electronic warfare support receiving analyzer allocating the jamming technique to the received actual threat signal and an electronic attack jamming model unit modelling a device for generating a simulation jamming signal. The system may further include an electronic attack jamming generator generating an actual jamming signal and a simulation situation demonstration controller analyzing performance by using the actual jamming signal and the actual threat signal.