Abstract: A received signal DOA estimation method using generation of virtual received signals includes: generating a preset number of virtual antennas at preset positions of a plurality of actual antennas; generating received signals received from the virtual antennas; and generating a DOA estimation value through a DOA estimation algorithm using the received signals received from the virtual antennas and the received signals received from the actual antennas.

Abstract: Apparatus and methods provide anti-spoofing capability from a first global navigation satellite system (GNSS) receiver to a second GNSS receiver. These GNSS receivers can be, for example, global positioning satellite (GPS) receivers. Via an authentication technique, signals from authentic GNSS sources are distinguished from signals from spoofers. Timing information, such as numerically-controlled oscillator (NCO) settings, used for tracking authenticated signals are then used to generate replica GNSS signals, which are then provided to the second GNSS receiver. As a result, the second GNSS receiver can provide accurate positioning system information in the presence of GNSS spoofers.

Abstract: In one example, a radar circuit uses computer processing circuitry for processing data corresponding to reflection signals via a sparse array. Output data indicative of signal magnitude associated with the reflection signals is generated, and then angle-of-arrival information is discerned therefrom by (e.g., iteratively): correlating the output data with at least one spatial frequency support vector indicative of a correlation peak for the output data; generating upper-side and lower-side support vectors which are neighbors along the spatial frequency spectrum for said at least one spatial frequency support vector, and providing, via a correlation of the upper-side and lower-side support vectors and said at least one spatial frequency support vector, at least one new vector that is more refined along the spatial frequency spectrum for said at least one spatial frequency support vector.

Abstract: Examples disclosed herein relate to an adaptive radar for near-far target identification. The radar includes an antenna module configured to radiate a transmission signal with an analog beamforming antenna in a plurality of directions using one or more phase control elements in a first radar scan and to generate radar data capturing a surrounding environment. The radar also includes a data pre-preprocessing module configured to receive the radar data and determine adjustments to transceiver parameters in the antenna module for a second radar scan subsequent to the first radar scan based at least on range. The radar also includes a perception module configured to detect and identify a target in the surrounding environment from the radar data. Other examples disclosed herein relate to methods of near-far target identification in a radar.

Abstract: A occupant detection and monitoring system has a sensor unit having a radio wave transmitter, a radio wave receiver, and a wireless transmitter configured to detect and receive vital signs of an occupant; a user interface having a microcontroller, a wireless receiver configured to receive the wireless signals transmitted from the sensor unit, a means for user input, and a network card; and a means for alerting occupants and third-parties to a triggering event; wherein the microcontroller, based upon logic, activates the alerting means at the triggering event. The sensor unit may be a camera that detects the presence of an individual and register their unique heart rhythm for identification purposes. This camera can be installed at the entry points of a home, behind the counter of a business near a cash register or at a bank or any other place that desires to use surveillance as a form of security. The sensor unit may be a light bulb that comprises the components of the sensor unit.

Abstract: Systems and methods are provided that may be implemented to modify information of an audio data transmission based on one or more measured signal reception and/or transmission characteristics of a radio frequency (RF) signal data transmission that contains or otherwise conveys the audio data transmission. The modified audio data may then be acoustically reproduced in analog form as sound waves. Examples of signal reception characteristics of a RF signal data transmission that may be measured and used as a basis for modifying information of audio data of an audio data transmission include, but are not limited to, time Difference of Arrival (TDOA), Angle of Arrival (AoA), measured received signal strength, etc. Example signal transmission characteristics of a RF signal that may be measured and used as a basis for modifying information of audio data include, but are not limited to, Angle of Departure (AoD).

Abstract: A portable radar system that may leverage the processing power, input and/or display functionality in mobile computing devices. Some examples of mobile computing devices may include mobile phones, tablet computers, laptop computers and similar devices. The radar system of this disclosure may include a wired or wireless interface to communicate with the mobile computing device, or similar device that includes a display. The radar system may be configured with an open set of instructions for interacting with an application executing on the mobile computing device to accept control inputs as well as output signals that the application may interpret and display, such as target detection and tracking. The radar system may consume less power than other radar systems. The radar system of this disclosure may be used for a wide variety of applications by consumers, military, law enforcement and commercial use.

Abstract: Methods and systems for detecting human presence in an outdoor monitored site are disclosed. In an configuration, the method may include providing at least three transmitters for transmitting radio signals and at least three receivers for receiving radio signals. Channel state information (CSI) data is extracted from the radio signals. The CSI data include phase values and amplitude values. The CSI data is converted into an image representation map and then a surface map is generated using Machine Learning (ML) networks. The surface map is a representation of correspondence between the image representation map and a 3-dimensional (3D) surface associated with a human body.

Abstract: A pallet safety system includes one or more of a pallet bed monitoring system, a pallet height monitoring system, and a pallet interface monitoring system, each of which provide an emitter and a detector. The safety system may be configured to be retrofit to an existing pallet system and is enabled to monitor the presence of unwanted obstructions at various regions proximate to the pallet bed opening, including a plane region above and parallel to the pallet beds, a region proximate to an interface between the pallet system and a material processing system, and a region between an upper and lower pallet.

Abstract: A radar sensor system is provided that includes: multiple sensor units that each includes a radar receiver and a location sensor; and a processor that is configured to use location sensor-based information to determine differences between respective sensor unit nominal locations and respective sensor unit actual locations and to use the determined differences to fuse the radar data received at the radar receivers to produce a wide radar aperture.

Abstract: Provided is an object shape detection apparatus that can detect the shape of a raised or depressed portion on the surface of an object. In accordance with a comparison result obtained by a reflection intensity comparator with regard to intensity of a horizontally polarized wave component and a vertically polarized wave component of a reflected wave, the object shape determiner detects the shape of the raised portion and the shape of the depressed portion of a detection target object. The object locator detects the position of the raised portion and the position of the depressed portion of the detection target object by measuring the distance to the raised portion and the distance to the depressed portion of the detection target object detected by the object shape determiner.

Abstract: A method for camera radar fusion includes receiving, by the processor, radar object detection data for an object and modeling, by a processor, a three dimensional (3D) physical space kinematic model, including updating 3D coordinates of the object, to generate updated 3D coordinates of the object, in response to receiving the radar object detection data for the object. The method also includes transforming, by the processor, the updated 3D coordinates of the object to updated two dimensional (2D) coordinates of the object, based on a 2D-3D calibrated mapping table and modeling, by the processor, a two dimensional (2D) image plane kinematic model, while modeling the 3D physical space kinematic model, where modeling the 2D image plane kinematic model includes updating coordinates of the object based on the updated 2D coordinates of the object.

Abstract: The invention relates to a method on a radar measuring system for determining a uniform speed, in which method two antenna pairs, each consisting of a transmitting antenna and a receiving antenna, are mapped to the same position within a virtual antenna arrangement.

Abstract: The present provides a radar apparatus and an antenna apparatus for the radar apparatus. Two transmission antennas disposed on both sides of the transmission antenna set may be arranged apart from each other by a predetermined vertical distance in a first direction perpendicular to the ground, and the four receiving antennas may be disposed apart from each other by a predetermined horizontal distance, so that the vertical information and the horizontal information of the object can be easily obtained in the long range detection mode and the short range detection mode.

Abstract: A method of using a radar sensor for a security system to determine a range for a sensed moving object or person, the method including: transmitting, from the radar sensor, a plurality of radar pulses and, when the object or person is present to reflect the radar pulses, receiving a corresponding plurality of pulses.

Abstract: Aspects of the present disclosure are directed to radar apparatuses and methods involving the communication of data with radar signals. As may be implemented with one or more embodiments, a sequence of radar waveforms are transmitted as RF signals, the RF signals carrying communication data encoded onto a ramped radar carrier signal via phase-shift keying (PSK) modulation. Such modulation may utilize a modified, reduced-angle modulation with phase angles of less than ?. Object-reflected versions of the RF signals are received and demodulated by deramping the received object-reflected versions of RF signals using a linearized version of the radar waveforms (e.g., without PSK modulation). This approach can mitigate compression peak loss.

Abstract: A mirror adjusting device, a reflecting assembly, a LiDAR, and an intelligent driving apparatus are provided. The mirror adjusting device includes a mounting bracket, a fixing bracket, and an elastic assembly. The mounting bracket includes a mirror mounting structure for mounting a mirror at one side and an adjusting part at the opposite side. The adjusting part includes a first curved wall protruding in a direction away from the mirror mounting structure, and the middle of the first curved wall is provided with a connecting structure. The fixing bracket includes a groove at one side and a through hole on the other side. The groove includes a second curved wall recessed toward the other side of the fixing bracket, and the first curved wall abuts against the second curved wall. The elastic assembly includes an elastic member and a connecting member.

Abstract: A centralized object detection sensor network system comprises a central unit configured to generate one or more probing signals for detecting one or more objects in an environment, and one or more transponders configured to receive the one or more probing signals and convert them into free space waves for detecting the one or more objects in the environment. The one or more transponders are communicatively coupled to the central unit through one or more communication links.

Abstract: In some embodiments, a non-transitory computer-readable storage medium includes instructions to identify, based upon Doppler-speed determination from one or more radars, radar targets within a hitbox for determining a first stationary status of a vehicle based on tracking Doppler-speed radar targets in a hitbox region. The medium also includes instructions to identify, based upon the Doppler speed determination from the one or more radars, field-of-view (FOV) radar targets for determining a second stationary status based on a substantial number and a distribution of Doppler-speed determinations for the FOV radar targets. The medium also includes instructions to confirm, based on detecting a change in either of the first or the second stationary status of the vehicle, an acceleration sensed by an inertial measurement unit onboard the vehicle.

Abstract: A mobile radar system for visualizing forward looking topography is configured with at least two phased-array antennas to form a forwarding looking phased-array interferometer.