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.

The invention relates to a method for protecting an object, in particular a land vehicle or watercraft, in particular a ship, from of a radar-guided missile by deploying and using an active offboard reflector, which is arranged at a decoy and comprises at least one receiving antenna and at least one transmitting antenna, wherein a radar signal transmitted by the radar-guided missile is picked up and is returned to the missile as an amplified signal in the previously ascertained opposite direction of reception; the invention proposes carrying out the method by deploying a plurality of flying drones, each having at least one active offboard reflector, and positioning the drones relative to one another in space in such a way that the active offboard reflectors thereof act as individual scattering centers and the signals therefrom that are returned to the missile collectively produce a radar scatter pattern that simulates the object to be protected.

The invention relates to a method for protecting an object, in particular a land vehicle or watercraft, in particular a ship, from of a radar-guided missile by deploying and using an active offboard reflector, which is arranged at a decoy and comprises at least one receiving antenna and at least one transmitting antenna, wherein a radar signal transmitted by the radar-guided missile is picked up and is returned to the missile as an amplified signal in the previously ascertained opposite direction of reception; the invention proposes carrying out the method by deploying a plurality of flying drones, each having at least one active offboard reflector, and positioning the drones relative to one another in space in such a way that the active offboard reflectors thereof act as individual scattering centers and the signals therefrom that are returned to the missile collectively produce a radar scatter pattern that simulates the object to be protected.

There is provided an apparatus for generating a jamming signal for deceiving a transmission/reception device. The apparatus includes a reception unit configured to receive a signal transmitted from the transmission/reception device and a determination unit configured to determine whether or not the received signal is a pulse compression signal. The apparatus futher includes a generation unit configured to determine, when the received signal is a pulse compression signal, a deception frequency based on a frequency bandwidth and a pulse width of the received pulse compression signal and generate the jamming signal based on the determined deception frequency.

There is provided an apparatus for generating a jamming signal for deceiving a transmission/reception device. The apparatus includes a reception unit configured to receive a signal transmitted from the transmission/reception device and a determination unit configured to determine whether or not the received signal is a pulse compression signal. The apparatus futher includes a generation unit configured to determine, when the received signal is a pulse compression signal, a deception frequency based on a frequency bandwidth and a pulse width of the received pulse compression signal and generate the jamming signal based on the determined deception frequency.

A method of radar jamming based on a frequency diverse array jammer is provided. In the method, jamming signals are transmitted through a frequency diverse array, so that the jamming signals transmitted by each array element are different in frequency. On one hand, the power of the jamming signals is enhanced by adopting an array form, which causes serious trouble to the target detection of enemy radar in the frequency domain. The frequency diverse array jammer uses a digital radio frequency memory as a front end basic component, stores and processes the received enemy detection signal, flexibly uses repeater jamming or smart jamming, and finally transmits the jamming signal in a frequency diverse array antenna mode to generate more false targets than conventional jamming, thereby effectively destroying the detection and tracking of the enemy radar on our side moving targets.

A method of radar jamming based on a frequency diverse array jammer is provided. In the method, jamming signals are transmitted through a frequency diverse array, so that the jamming signals transmitted by each array element are different in frequency. On one hand, the power of the jamming signals is enhanced by adopting an array form, which causes serious trouble to the target detection of enemy radar in the frequency domain. The frequency diverse array jammer uses a digital radio frequency memory as a front end basic component, stores and processes the received enemy detection signal, flexibly uses repeater jamming or smart jamming, and finally transmits the jamming signal in a frequency diverse array antenna mode to generate more false targets than conventional jamming, thereby effectively destroying the detection and tracking of the enemy radar on our side moving targets.

The present invention is a signal processing method to significantly improve the detection and identification of source emissions. More particularly, the present invention offers a processing method to reduce the false alarm rate of systems which remotely detect and identify the presence of electronic devices through an analysis of a received spectrum the devices' unintended emissions. The invention identifies candidate emission elements and determines their validity based on a frequency and phase association with other emissions present in the received spectrum. The invention compares the measured phase and frequency data of the emissions with a software solution of the theoretically or empirically derived closed-form expression which governs the phase and frequency distribution of the emissions within the source. Verification of this relationship serves to dramatically increase the confidence of the detection.

The present invention is a signal processing method to significantly improve the detection and identification of source emissions. More particularly, the present invention offers a processing method to reduce the false alarm rate of systems which remotely detect and identify the presence of electronic devices through an analysis of a received spectrum the devices' unintended emissions. The invention identifies candidate emission elements and determines their validity based on a frequency and phase association with other emissions present in the received spectrum. The invention compares the measured phase and frequency data of the emissions with a software solution of the theoretically or empirically derived closed-form expression which governs the phase and frequency distribution of the emissions within the source. Verification of this relationship serves to dramatically increase the confidence of the detection.

A method for transforming and reconstructing a signal includes receiving a plurality of samples of a waveform of the signal at different points in time. The waveform of the signal is transformed, for each sample, into an in-phase (I) component and a quadrature (Q) component. A derotational circuit applies a delayed complex conjugate multiple (DCM) to the signal to determine a constant product having an I component (I.sub.c) and a Q component (Q.sub.c). A magnitude component is determined based on I.sub.c and Q.sub.c. A delta phase component is determined based on I.sub.c and Q.sub.c. The magnitude component is processed to create a processed magnitude component. The delta phase component is processed to create a processed delta phase component. An IQ waveform is created by reconstructing the waveform of the signal based on the processed magnitude component and the processed phase component.