This application relates to a method for selecting sources of illumination to jam, performed by an apparatus of selecting sources of illumination to jam for passive radar jamming. The method may include, predicting sources of illumination used by a virtual passive radar of interest disposed within a jamming range with respect to the location of a passive radar jammer. The method may also include selecting sources of illumination as candidates for jamming if the signal strength of a target reflection signal received by the virtual passive radar of interest from the sources of illumination is equal to or greater than an acceptable received signal strength. The method may further include picking out which sources of illumination to jam from the sources of illumination selected as candidates for jamming, based on how frequently the virtual passive radar of interest uses each of the selected candidates for jamming.

A method for controlling radiation scattering, comprises: directing radiation to a metamaterial having an array of individually tunable and near field coupled resonators, varying an individual resonance frequency of at least one of the resonators to provide a collective resonance scattering of the radiation by the metamaterial, measuring a scattering signal of the collective resonance scattering of the radiation, and identifying the metamaterial based on the scattering signal.

A method for controlling radiation scattering, comprises: directing radiation to a metamaterial having an array of individually tunable and near field coupled resonators, varying an individual resonance frequency of at least one of the resonators to provide a collective resonance scattering of the radiation by the metamaterial, measuring a scattering signal of the collective resonance scattering of the radiation, and identifying the metamaterial based on the scattering signal.

The disclosure relates to an electronic countermeasure cartridge (6) arranged to be loaded into a countermeasure dispenser (7) in a mobile platform (1). The electronic countermeasure cartridge (6) comprises an electromagnetic transmitting means (8), an electric energy storage (9) arranged to supply the electromagnetic transmitting means (8) with electric energy and a trigger device (10) arranged to trigger a transmission of electromagnetic radiation from the electromagnetic transmitting means (8) upon detection of an incoming threat (2). The transmitted electromagnetic radiation is arranged to irradiate an electromagnetically reflective material (3) dispensed from the countermeasure dispenser (7). The disclosure also relates to a method for providing threat protection for a platform (1) and to a countermeasure system comprising a countermeasure dispenser (7).

A positioning device according to the present disclosure technology includes a TDOA calculator to calculate a TDOA on the basis of a peak of cross-correlation, a TDOA positioning processor to perform TDOA positioning on the basis of the TDOA, a DOA estimation processor to estimate a DOA from a reception signal received by an array antenna of at least one satellite, a DOA positioning processor to perform DOA positioning on the basis of the DOA, and an ambiguity handler to select one closest to a result calculated by the DOA positioning processor from a plurality of positioning results calculated by the TDOA positioning processor.

A positioning device according to the present disclosure technology includes a TDOA calculator to calculate a TDOA on the basis of a peak of cross-correlation, a TDOA positioning processor to perform TDOA positioning on the basis of the TDOA, a DOA estimation processor to estimate a DOA from a reception signal received by an array antenna of at least one satellite, a DOA positioning processor to perform DOA positioning on the basis of the DOA, and an ambiguity handler to select one closest to a result calculated by the DOA positioning processor from a plurality of positioning results calculated by the TDOA positioning processor.

Provided is a technique capable of moving a mobile body to an appropriate position and eliminating the mobile body. This mobile body control system is provided with: a false signal generation unit that generates a false signal for calculating a position different from the actual position of the mobile body on the basis of signal code information which the mobile body has received to calculate the position thereof; and a false signal transmission unit that transmits the generated false signal into a prescribed region.

The invention relates to a portable electronic signal generator, and in particular a programmable multi-waveform radiofrequency generator for use as battlefield decoy.

The invention relates to a portable electronic signal generator, and in particular a programmable multi-waveform radiofrequency generator for use as battlefield decoy.

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.