A hybrid RADAR and communication system provides both RADAR and wireless communication (COMMS) that share the same antenna, transmit and receive amplifiers, and other hardware, thereby reducing size, weight, and power requirements. In embodiments, COMMS implementation only requires adding additional software to a RADAR system. Embodiments are EW/COMMS systems that provide electronic warfare and wireless communication. EW/COMMS embodiments facilitate communication in hostile environments by enabling data exchange at any frequency within a broad EW frequency range. Communication signals can be obfuscated by interleaving them with EW waveforms at the same RF frequency. Collaborative communication between EW systems is enhanced by reducing EW communication lag times. Systems with physically distinct broadband and narrow band receivers can negotiate data exchange timing and frequencies by exchanging low power, low data rate control signals that are detected by the broadband receiver, while subsequent high density data bursts are received by the narrowband receiver.

This disclosure describes systems, methods, and devices related to an invalid location measurement report (LMR) indication. A device may identify a first null data packet (NDP) received from a first station device during, wherein the first NDP is used for channel sounding. The device may perform a time of arrival (ToA) calculation based on the NDP. The device may determine an invalid indication associated with the first NDP based on the ToA calculation. The device may generate an LMR comprising of the invalid measurement indication. The device may cause to send the LMR to the first device.

A radar unit (400) for detecting an existence of interference is described that includes: a millimetre wave (mmW) transceiver (Tx/Rx) circuit configured to radiate a transmit radar signal and receive an echo signal thereof; a mixed analog and baseband circuit operably coupled to the mmW Tx/Rx circuit; and a signal processor circuit (452) operably coupled to the mixed analog and baseband circuit. An interference detection unit (448) is operably coupled to the mmW Tx/Rx circuit and configured to: monitor a whole or a portion of a radar frequency band supported by the radar unit and identify, from a received interference signal, an arrival direction of the identified interference and a level of interference and output an interference detected signal; and wherein the signal processor circuit (452) is configured to analyse the interference detected signal and quantify a response to the detection of an arrival direction and a level of received interference.

A radar unit (400) for detecting an existence of interference is described that includes: a millimetre wave (mmW) transceiver (Tx/Rx) circuit configured to radiate a transmit radar signal and receive an echo signal thereof; a mixed analog and baseband circuit operably coupled to the mmW Tx/Rx circuit; and a signal processor circuit (452) operably coupled to the mixed analog and baseband circuit. An interference detection unit (448) is operably coupled to the mmW Tx/Rx circuit and configured to: monitor a whole or a portion of a radar frequency band supported by the radar unit and identify, from a received interference signal, an arrival direction of the identified interference and a level of interference and output an interference detected signal; and wherein the signal processor circuit (452) is configured to analyse the interference detected signal and quantify a response to the detection of an arrival direction and a level of received interference.

A method for operating a radar in a radar system to cancel an external disturbance in a received signal is provided. The method comprises receiving a signal at the receiving antenna, receiving the signal at the control unit, identifying interfering signal, generating a correction signal and feeding the correction signal. The correction signal is arranged to dampen the interfering signal in the frequency span in the received signal. Thereby the external disturbance is reduced.

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 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 first device (110) for distance measurement via wireless communication (130) uses a ranging protocol for determining a distance (140) to a second device (120) via a round trip time measurement, wherein first time data represents the round trip time and second time data represents a response time between receiving a request and sending a corresponding acknowledge. The second device receives the round trip time and determines the distance. The first device determines third time data by subtracting from the first time data a calculated travelling time of the messages between the first device and the second device based on the determined distance, and determines identifier data indicative of hardware and/or software present in the second device. The device then obtains, from a database based on the identifier data, a reference interval value, and verifies whether the determined distance is reliable by comparing the third time data to the reference interval value.

A first device (110) for distance measurement via wireless communication (130) uses a ranging protocol for determining a distance (140) to a second device (120) via a round trip time measurement, wherein first time data represents the round trip time and second time data represents a response time between receiving a request and sending a corresponding acknowledge. The second device receives the round trip time and determines the distance. The first device determines third time data by subtracting from the first time data a calculated travelling time of the messages between the first device and the second device based on the determined distance, and determines identifier data indicative of hardware and/or software present in the second device. The device then obtains, from a database based on the identifier data, a reference interval value, and verifies whether the determined distance is reliable by comparing the third time data to the reference interval value.

Radio frequency motion sensors may be configured for operation in a common vicinity so as to reduce interference. In some versions, interference may be reduced by timing and/or frequency synchronization. In some versions, a master radio frequency motion sensor may transmit a first radio frequency (RF) signal. A slave radio frequency motion sensor may determine a second radio frequency signal which minimizes interference with the first RF frequency. In some versions, interference may be reduced with additional transmission adjustments such as pulse width reduction or frequency and/or timing dithering differences. In some versions, apparatus may be configured with multiple sensors in a configuration to emit the radio frequency signals in different directions to mitigate interference between emitted pulses from the radio frequency motion sensors.