A system is provided that includes multiple analog-to-digital converters (ADCs), multiple antennas, and one or more processors. The one or more processors are configured, in a first mode of operation, to receive from the multiple ADCs samples of emissions received by one of the antennas and identify a signal of interest. The one or more processors are configured, in a second mode of operation, receive from the multiple ADCs samples of emissions received by the multiple antennas and identify an angle of arrival for the signal of interest.

A defense system that receives information regarding an incoming object(s), then automatically coordinates spoofing or jamming of SATNAV signals potentially used by the incoming object(s) while also informing friendly systems of the spoofing or jamming of SATNAV signal.

A method and a device for determining a radar cross section, a method for training an interaction model, a radar target emulator for manipulating a radar signal, and a test facility for a vehicle are described herein. The propagation of a virtual radar signal is simulated on the basis of an interaction model in a simulated environment scenario that contains the simulated radar target. An interaction of the virtual radar signal with the simulated radar target is modelled such that a physical variable, characterizing the virtual radar signal, is divided into a directional component that corresponds to a directed scattering of the virtual radar signal and into a diffuse component that corresponds to an isotropic scattering of the virtual radar signal. A value of the physical variable is determined at a receiver point in the simulated environment scenario, taking into account the directional component and the diffuse component, and the radar cross section of the simulated radar target is derived from the determined value of the physical variable at the receiver point.

Embodiments of the disclosure relate to a fifth generation (5G) or pre-5G communication system for supporting a higher data transmission rate beyond the fourth generation (4G) communication system, such as long term evolution (LTE) are provided. The method for managing a channel in a wireless local area network (WLAN) system includes detecting a radar signal and determining an optimal channel based on history information of a channel and the detected radar signal.

An apparatus is disclosed for radar interference mitigation using a pseudorandom offset. The apparatus includes an antenna array and a wireless transceiver. The wireless transceiver is coupled to the antenna array and is configured to transmit, via the antenna array, a radar transmit signal based on at least one pseudorandom offset. The wireless transceiver is also configured to receive, via the antenna array, at least a portion of another radar transmit signal from another apparatus. The wireless transceiver is additionally configured to receive, via the antenna array, a radar receive signal that includes a portion of the radar transmit signal that is reflected by an object. At a given time, a frequency of the radar receive signal is different than a frequency of the radar transmit signal based on the at least one pseudorandom offset.

The present disclosure relates to an information processing apparatus, an information processing method, and a wireless communication apparatus that may enable more reliable detection of presence of a signal of a primary system. A learning unit carries out learning of frequency utilization statistics information regarding a secondary system, with use of information regarding a frequency occupancy situation of the secondary system which shares a frequency or a frequency band allocated to the primary system, at least as teacher information, and with use of sensing data collected by a sensor unit which senses a radio wave environment, as student information. A detection unit carries out detection processing based on the frequency utilization statistics information and, upon detection of the presence of the signal of the primary system, gives detection notification or radio wave stoppage instructions to other wireless communication apparatuses utilizing a frequency for the secondary system.

At least some embodiments of the present invention are directed to RFID reader systems configured to estimate a directional bearing of an RFID tag. In an embodiment, the present invention is an RFID system configured in a way that upon a detection of a variance in the direction of a maximum RSSI value for a given RFID tag in response to a plurality of interrogation signals transmitted by an RFID reader over a respective plurality of different directions, the RFID reader retransmits the plurality of interrogation signals over the respective plurality of different directions with successively lower power levels until the only response(s) being received no longer exhibit the previously detected variance.

Disclosed are methods and systems for a WLAN device operating on DFS channels to calibrate the PRI as well as delays between partial pulses of received radar pulses that are impaired due to channel and filtering effects. The calibrated PRI may approximate the PRI of the transmitted pulses. The calibrated delay between the partial pulses estimates the interval between two partial pulses that originally belong to the same transmitted pulse. Using the calibrated PRI and the calibrated delay between partial pulses, the WLAN device may reconstruct the original pulses from received impaired pulses even when the impaired pulses are delayed and partial pulses of the original pulses. The WLAN device may use the calibrated results to correct the shortened PW and varying PRI of the impaired pulses to restore the partial pulses to their full PW with a relatively uniform PRI, increasing the probability of detecting the radar signals.

The disclosure relates to a method for processing information based on radar waves, applied to a first terminal. The method includes: a first radar signal sent by a second terminal is received during an event; and identification information of a user to which the second terminal belongs is acquired based on the first radar signal.

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.