A network system can communicate with user and provider devices to facilitate the provision of a network-based service. The network system can identify optimal service providers to provide services requested by users. The network can utilize context data in matching service providers with users. In particular, the network system can determine, based on context data associated with a user, whether to perform pre-request matching for that user. A service provider who is pre-request matched with the user can be directed by the network system to relocate via a pre-request relocation direction. When the user submits the service request after the pre-request match, the network system can either automatically transmit an invitation to the pre-request matched service provider or can perform post-request matching to identify an optimal service provider for the user.

Training a machine learning neural network (MLNN) in radiowave based monitoring of fall characteristics in diagnosing injury. The method comprises receiving, in a first set of input layers of the MLNN, from a millimeter wave (mmWave) radar sensing device, a set of mmWave radar point cloud data representing fall attributes associated with a subject, each of the first set associated with a respective fall attribute; receiving, at a second set of input layers of the MLNN, a set of personal attributes of the subject, training a MLNN classifier based on supervised training that establishes a correlation between an injury condition of the subject as generated at the output layer, the mmWave point cloud data, and personal attributes; and adjusting an initial matrix of weights by backpropagation to increase correlation between the injury condition, the mmWave point cloud data, and the personal attributes.

An aerial vehicle system for mapping an object buried in a subterranean surface, the aerial vehicle system including an aerial vehicle, an electronic sensor, a processor, and a memory. The memory includes instructions, which when executed by the processor, cause the system to receive a first input data set by the electronic sensor, the first input data set based on an electromagnetic signal and geographic location data, generate a raw image based on the first input data set, and compare the raw image to a calibration data set, the calibration data set based on material calibration data. The material calibration data is based on unique spectral reflection patterns of an object in a controlled environment at predefined heights and subterranean conditions.

A method for occupancy detection for at least one vehicle seat, using at least one transmit antenna and a plurality of receive antennas, includes: emitting a detection signal with each transmit antenna onto at least one vehicle seat, which detection signal is a frequency-modulated continuous-wave radar signal, and receiving with each receive antenna a reflected signal; recording sample data representing the reflected signal, the sample data having M channels, with M=N1.Math.N2, where N1 is the number of transmit antennas and N2 is the number of receive antennas; for each channel, removing a component from the sample data that corresponds to a reflection from a static object; and applying a frequency estimation method to the sample data to at least implicitly determine at least one angle of arrival θ.sub.i corresponding to a position of an occupant on a vehicle seat.

The invention relates to device (1) for measuring volumes of a liquid in a container (B) by means of measuring emitted high-frequency radiation, comprising control unit (C), a transmitter (TX), at least one first transmitting antenna (ANT_TX1) and at least one second transmitting antenna (ANT_TX2), at least one receiving antenna (ANT_RX1) and a receiver (RX), wherein the transmitter (TX) is configured to emit high-frequency radiation when in operation, wherein the first transmitting antenna (ANT_TX1) and the second transmitting antenna (ANT_TX2) are configured to emit high-frequency radiation during operation so that radiation can reach the container (B), wherein first receiving antenna (ANT_RX1) is configured to record high-frequency radiation reflected from the container (B), wherein the receiver (RX) is configured to take up the high-frequency radiation received by the receiving antenna (ANT_RX1), wherein the control unit (C) is configured to control the transmitters so that the transmitter (TX) emits high-frequency radiation, and wherein the control unit (C) is also configured to evaluate high-frequency radiation taken up by the receiver (RX) so that a measurement of the volume of the liquid in the container (B) is determined, wherein the measurement of the volume of liquid in the container (B) is determined from channel state information. The invention also relates to device (1) for measuring volumes of a liquid in a container (B) by means of measuring emitted high-frequency radiation, comprising a control unit (C), a transmitter (TX), at least one first transmitting antenna (ANT_TX1) and at least one second transmitting antenna (ANT_TX2), a least one first receiving antenna (ANT_RX1) and a second receiving antenna (ANT_RX2) and a receiver (RX), wherein the transmitter (TX) is configured to emit high-frequency radiation when in operation, wherein the first transmitting antenna (ANT_TX1) and the second transmitting antenna (ANT_TX2) are configured to emit high-frequency radiation during operation so that radiation can reach the container (B), wherein the first receiving antenna (ANT_RX1) is configured to record high-frequency radiation reflected from the container (B), wherein the second receiving antenna (ANT_RX2) is configured to record high-frequency radiation transmitted from the container (B), wherein the control unit (C) is configured to control the transmitters so that the transmitter (TX) emits high-frequency radiation, and wherein the control unit (C) is also configured up to evaluate high-frequency radiation taken up by the r

Trapped or confined individuals may be located and rescued by detecting their movement using reflected, radio frequency signals over a range of multiple antenna polarities.

Trapped or confined individuals may be located and rescued by detecting their movement using reflected, radio frequency signals over a range of multiple antenna polarities.

A field of awareness (FOA) system provides an operator of a vessel with intuitive object detection and positioning information. The system may comprise an FOA cloud server and an FOA unit. The FOA cloud server may be configured to perform a machine learning training operation to modify an FOA model based on a location-based relationship between training radar data and truth data. The FOA unit may be disposed on the vessel and may comprise processing circuitry configured to apply radar data to the FOA model to perform a comparison to determine a matched model signature, an associated matched object type, and an icon representation for the object of interest. The processing circuitry also be configured to control the display device to render the icon representation of the object at a position relative to a representation of the vessel based on the relative object position.

A radar device comprising: a printed circuit board (120), PCB, comprising a ground plane (1202), a radar sensor chip package (130) mounted on the PCB (120) and comprising a mm Wave radio frequency, RF, integrated circuit (1302) and a planar antenna structure (1304) configured as an antenna-in-package and oriented in a plane parallel to the ground plane (1202), wherein the mmWave RF integrated circuit (1302) is configured to output a mmWave signal (1360) to be transmitted by the planar antenna structure (1304), and a cavity (140), wherein the radar sensor chip package (130) is arranged in the cavity (140), the cavity (140) having an open side (1402), and the cavity (140) being defined by a conductive rear wall surface (1404) opposite the open side (1402), a pair of mutually opposite and conductive sidewall surfaces (1406), a conductive top surface (1408), and a conductive bottom surface (1410), wherein at least a portion of the conductive bottom surface (1410) is formed by at least a portion of the ground plane (1202) of the PCB (120), and wherein the sidewall surfaces, the top surface, and the bottom surfaces (1406, 1408,1410) each extends from the rear wall surface (1404) towards the open side (1402) of the cavity (140).

Technologies for tracking the location of mobile assets include a tracking device mounted to an asset and radio-frequency identification tags installed or attached to static structures. The radio-frequency identification tags include identification data stored thereon. The identification data is associated with the installed location of the corresponding radio-frequency identification tags. The tracking device includes one or more transceivers configured to energize or trigger the radio-frequency identification tags and receive the stored identification data when the tracking device and asset are in proximity to the tags. The current location of the mobile asset is determined based on the identification data received from the radio-frequency identification tags.