An underwater positioning system comprises a plurality of underwater beacons. A beacon, in response to a signal sent by an underwater vehicle, responds with a signal comprising one or more characteristics to identify the beacon. Components of an access algorithm are provided to the underwater vehicle. The access algorithm determines a location of the beacon based on the beacon's identity. A position of the vehicle is determined based at least in part on the location of the beacon.

Apparatus and methods for enhanced wireless determination of a position and direction of a smart device. Wireless transceivers controlled by the smart device communicate with reference point transceivers to generate data sufficient to determine relative positions of the wireless transceivers and a direction of interest. Operation of one or both of a magnetic force sensor and LIDAR may be operative to verify the position and direction of the Smart Device.

A system for tracking wearable user devices is provided herein. The system may include a tracking environment, comprising: one or more scene light sources, wherein the location of the scene light sources is known within said tracking environment; one or more scene detectors operable to detect light within the tracking environment, wherein the location and orientation of said one or more scene detectors is known within said tracking environment; one or more scene reflectors operable to reflect light originating from said one or more scene light sources, wherein the location of said one or more scene reflectors is known within said tracking environment; and, one or more wearable user devices comprising a curved reflective surface with known geometry; and, a computer processor operable to analyse light readings detected by said one or more scene detectors, and to calculate a position of the one or more wearable user devices.

A system for a vehicle includes a trio of ultrasonic sensors, and a controller configured to, responsive to a location of an object identified from a distance between the ultrasonic sensors, a receive time at each of the ultrasonic sensors associated with a same ultrasonic pulse from a transmitter of the object, and an absence of data regarding a send time of the ultrasonic pulse, steer the vehicle to the object.

A sensor control device includes a plurality of drive units for oscillating respective transducers included in a plurality of ultrasonic sensors, a driving signal generation section for generating driving signals capable of oscillating the respective plurality of transducers, a control unit having a control signal output section for outputting, to each one of the plurality of drive units, a control signal as an input command for the driving signal to the respective transducer and a bus line configured to connect the control unit to the plurality of drive units in form of a daisy-chain, the bus line being used for bidirectional communication of communication data between the control unit and the plurality of drive units based on preset time-division, the communication data being comprised of a data structure having a first band that allows superimposition of audio data thereon. Control data based on the control signal is included in the first band.

A parking assistance device includes: an obstacle detection unit that detects an obstacle; a separated distance determination unit that determines a separated distance between the obstacles when a plurality of the obstacles are detected; a target position determination unit that determines a target position in a guidance route; a route calculation unit that calculates the guidance route; and a control unit that guides a vehicle in accordance with the guidance route, wherein, when a second obstacle is detected in a second direction orthogonal to a first direction in which one or plurality of first obstacles extends or are lined up while being separated from each other and at a position separated from the first direction, the separated distance determination unit determines the separated distance between the first and second obstacles.

A vehicular radar sensing system includes a radar sensor disposed at a vehicle. The radar sensor includes a plurality of antennas, which includes a plurality of transmitting antennas and a plurality of receiving antennas. The radar sensor transmits multiple outputs via the plurality of transmitting antennas and receives multiple inputs via the plurality of receiving antennas. The plurality of antennas includes a plurality of sets of antennas, each set having a V shape or an X shape, and with each of the shaped sets of antennas having an apex. A signal feed is provided to the apex of each of the shaped sets of antennas. Outputs of the receiving antennas are communicated to a processor, and the processor, responsive to the outputs of the receiving antennas, determines presence of one or more objects exterior the vehicle and within the field of sensing of the radar sensor.

A system for searching for underground entities in ground of an area, including a search probe configured to generate and deliver an acoustic signal into the ground of the area, wherein the acoustic signal uses a low frequency signal so that wavelengths of the acoustic signal are between 0.01-500 times the depth to the sought underground entity, two or more sensors positioned on the ground at about an equal distance from the search probe at different angles, an analysis device that receives measurements from the two or more sensors in the form of a measured echo signal responsive to the delivered acoustic signal, wherein said analysis device designates pairs of sensors and subtracts their echo signals to identify a difference indicating the existence of an underground entity.

An object detection device includes: first and second transmission/reception units spaced apart from each other and configured to transmit an exploration wave and receive the exploration wave reflected by an object; and a processing unit configured to calculate a position of the object based on reception results by the first and second transmission/reception units. The processing unit includes: a distance processing unit configured to calculate first and second points based on the reception results, and calculates a separation distance between the first and second points; a position calculation unit configured to calculate the position based on the first and second points; a reflection intensity processing unit configured to calculate a reflection intensity indicating an intensity of the exploration wave received by the first and second transmission/reception units; and a position correction unit configured to correct the position based on the separation distance and the reflection intensity.

An electronic device is disclosed. The electronic device according to an embodiment include a communication module, an output device, a microphone, and a processor, wherein the processor acquires an audio signal from an external device using the communication module, outputs a signal corresponding to the audio signal and a signal of a specified frequency band through the output device, acquires the signal of the specified frequency band using the microphone, determines a proximity state of an external object to the electronic device based at least on a strength of the signal of the specified frequency band and controls at least some functions of the electronic device based on at least the determined proximity state. In addition, various embodiments understood from the specification are possible.