A method for synchronizing devices in a vehicle may make use of the Controller Area Network (CAN) communication bus. A bus interface of each of two or more devices coupled to the bus may be configured to accept a same message broadcast via the communication bus, in which the message has a specific message identification (ID) header. A message may be received from the communication bus that has the specific message ID simultaneously by each of the two or more devices. Operation of the two or more devices may be synchronized by triggering a task on each of the two or more devices in response to receiving the message having the specific message ID.

A system for virtual aperture array radar tracking includes a transmitter that transmits first and second probe signals; a receiver array including a first plurality of radar elements positioned along a first radar axis; and a signal processor that calculates a target range from first and second reflected probe signals, corresponds signal instances of the first reflected probe signal to physical receiver elements of the radar array, corresponds signal instances of the second reflected probe signal to virtual elements of the radar array, calculates a first target angle between a first reference vector and a first projected target vector from the first reflected probe signal, and calculates a position of the tracking target relative to the radar array from the target range and first target angle.

A device for monitoring a health parameter in a person is disclosed. The device includes a semiconductor substrate, at least one transmit antenna configured to transmit millimeter range radio waves over a 3D space below the skin surface of a person, multiple receive antennas configured to receive radio waves, the received radio waves including a reflected portion of the transmitted radio waves, wherein the semiconductor substrate includes circuits for processing signals received on the multiple receive antennas, wherein processing signals includes mixing signals of two different frequencies, and wherein the semiconductor substrate includes at least one output configured to output a signal that corresponds to a health parameter of a person in response to received radio waves.

The disclosed system and method for smart detection of an armament projectile can mitigate the detection of its radar by counter-radar systems. Particularly, the system may include an array of acoustic sensors for sensing one or more volleys associated with an armament projectile. An intelligent filtering module, coupled to the array of acoustic sensors, may select a volley based upon a learning algorithm, which can be applied to a target profile of historical system data logs. Based upon sensed parameters of the volley, the intelligent filtering module can calculate a radiation duration and a search fan width for radar transmission. Specifically, a controller, within the intelligent filtering module, may couple to actuate the radar at the calculated search fan width for the calculated radiation duration. In some embodiments, the intelligent filtering module can selectively actuate one radar based upon highest expanded detection probability relative to location and status.

An ultra-wideband-based system and method for detecting properties associated with a movable object in an environment such as an indoor environment. The method includes transmitting ultra-wideband radar signals to an environment, using an ultra-wideband transmitter, and receiving signals reflected from the environment as a result of the transmission of the first ultra-wideband radar signals using an ultra-wideband receiver. The method also includes processing the reflected signals and determining properties associated with a movable object in an environment based on the processed reflected signals, using the processor.

A system and bent-pipe transponder component for determining a location of an individual or object in three dimensional space. The system includes a transmitter configured to transmit a first wireless electromagnetic signal at a first frequency and at least one transponder that is configured to responsively emit a second wireless electromagnetic signal having a second frequency that is frequency-shifted from the first frequency. An included receiver detecting the first and second wireless electromagnetic signals is configured to provide an output of location information for the at least one transponder. A bent-pipe transponder component may include a receiving antenna, an emitting antenna, and a frequency shift stage comprising an oscillator and a first mixer, with the frequency stage mixing a received first wireless electromagnetic signal with the output of the oscillator via the first mixer to produce the emitted second wireless electromagnetic signal.

Illustrative methods and circuits to verify operation of phase shifters. One illustrative method includes: obtaining a first set of in-phase and quadrature components (I.sub.1,Q.sub.1) of a phase shifter output signal with a first setting; measuring a second set of components (I.sub.2,Q.sub.2) with a second setting, the second setting being offset from the first by a predetermined phase difference; and combining the first and second sets to determine whether their relationship corresponds to the predetermined phase difference. An illustrative transmitter includes: a phase shifter, an I/Q mixer, and a processing circuit. The phase shifter converts a transmit signal into an output signal having a programmable phase shift. The I/Q mixer mixes the output signal with a reference signal to obtain in-phase and quadrature components of the output signal. The processing circuit is coupled to the I/Q mixer implement the disclosed method.

An electronic device according to various embodiments of the present disclosure may include a wireless communication circuit, a memory, and a processor operatively connected to the memory and the wireless communication circuit, wherein the memory stores instructions that when executed cause the processor to start a ranging round by transmitting, to an external electronic device, a ranging control message (RCM) including transmission control information of data to be transmitted, to perform ranging based on the ranging control message, and upon completion of ranging, to transmit, based on the transmission control information included in the ranging control message, the data in a slot allocated in the ranging round.

Aspects of this disclosure relate to a miniaturized digital radar system and method that can be fabricated on a Printed Circuit Board (PCB) and/or a chip, such as on a System-On-a-Chip (SOC). The digital radar system can operate at the S-band (e.g. in the range of 3 GHz). Advantageously, the S-band frequency range is less susceptible and/or not susceptible to clutter from precipitation and is well suited for long range surveillance applications. The small form factor of the miniaturized digital radar system on the PCB and/or the SOC can be implemented on small and/or low-observable platforms, such as on fixed or rotary wing unmanned aerial vehicles.

Aspects of this disclosure relate to a miniaturized digital radar system and method that can be fabricated on a Printed Circuit Board (PCB) and/or a chip, such as on a System-On-a-Chip (SOC). The digital radar system can operate at the S-band (e.g. in the range of 3 GHz). Advantageously, the S-band frequency range is less susceptible and/or not susceptible to clutter from precipitation and is well suited for long range surveillance applications. The small form factor of the miniaturized digital radar system on the PCB and/or the SOC can be implemented on small and/or low-observable platforms, such as on fixed or rotary wing unmanned aerial vehicles.