In emergency or search-and-rescue operations, user devices such as phones may transmit signals that indicate people may be located nearby. The signals can be detected by one or more rover devices, which can explore dangerous terrain for indications of people to be rescued. The user devices can activate an application that conserves battery power while emitting a signal, in some cases in a round robin configuration to further conserve power. The rover devices, or other devices that make contact with the user devices, can collect and manipulate data about the user devices to aid a rescue operation.

A system and method for locating radio-frequency identification tags within a predetermined area. The method can incorporate sub-threshold superposition response mapping techniques, alone, or in combination with other methods for locating radio-frequency identification tags such as but not limited to time differential on arrival (TDOA), frequency domain phase difference on arrival (FD-PDOA), and radio signal strength indication (RSSI). The system can include a plurality of antennas dispersed in a predefined area; one or more radio-frequency identification tags; a radio-frequency transceiver in communication with said antennas; a phase modulator coupled to the radio-frequency transceiver; and a system controller in communication with said transceiver and said phase modulator. Calibration techniques can be employed to map constructive interference zones for improved accuracy.

An imaging system including a transmitter configured to transmit a signal in a direction of a scene of interest. The transmitted signal is spatially and temporally incoherent at a point where the transmitted signal reaches the scene of interest. The system includes a receiver set including at least a first receiver and a second receiver. The first receiver and the second receiver are configured to receive a reflected signal. The reflected signal is a reflection of the transmitted signal from the scene of interest. The system further includes an active incoherent millimeter-wave image processor configured to obtain the reflected signal and reconstruct a scene based on the reflected signal. The system also includes a display device configured to display the scene.

An ultra-wideband assisted precise positioning system and an ultra-wideband assisted precise positioning method are provided. The method includes: arranging a plurality of device nodes in a target area; configuring a central control device node to communicatively connect to the device nodes; configuring the device nodes to perform a positioning process to obtain measured distances and positioning positions to be corrected; and configuring a central control processor to execute a positioning algorithm. The positioning algorithm includes: obtaining the measured distances and the positioning positions to be corrected; for each of the positioning positions to be corrected, performing a center-of-gravity weighting processing on neighboring points for obtaining initial guess positions; and obtaining the initial guess positions to input to an optimizer and optimize an objective function, and finding corrected positions with relatively smallest errors. The objective function includes empirical weights associated with distance errors of the measured distances.

A method for dynamic notification management at a head mounted display (HMD) includes presenting, at the HMD, an augmented reality display, receiving, at a processor controlling the HMD, a notification from an application for display at the HMD, receiving, at the processor at a first time, first sensor data from one or more of a camera or a microphone, determining, based on the first sensor data, a first value of one or more factors associated with a probability that a user of the HMD is currently in a real-world conversation, determining an importance value of the received notification at the first time, and determining whether to display the notification from the application based on a comparison of the first value of the one or more factors associated relative to the importance value of the received notification.

A system and method for locating a portable electronic device that is paired with a vehicle that uses a plurality of antennas located on an exterior of a body of the vehicle, within an interior cabin of the vehicle, or located on the exterior of the body and within the interior cabin of the vehicle to communicate with the portable electronic device, and displays a location of the portable electronic device within or near the vehicle based on the communication between the plurality of antennas and the portable electronic device on a graphic display interface of the vehicle.

Methods and systems for mapping boundaries of a given environment by a processor of a computer system, the method comprising: determining a trajectory of the body in the given environment over the given time period; and determining, based on the trajectory of the body in the given environment, one or more of an outer boundary of the given environment, and an inner boundary of the given environment. Methods and systems for mapping functionalities of a given environment executable by a processor of a computer system, the method comprising determining a pattern of movement of a body in the given environment in a given time period; and determining a functional identity of at least one zone in the given environment based on the pattern of movement of the body to obtain a mapped given environment.

A system for connecting a mobile device to a motor vehicle via a Bluetooth connection is proposed. The system comprises a processing unit for detecting a signal strength of a signal transmitted between the mobile device and the motor vehicle and for determining the position of the mobile device with respect to the motor vehicle based on the signal strength, and a connecting unit for coupling the mobile device and the motor vehicle via a Bluetooth Low Energy connection, for establishing a Bluetooth connection between the mobile device and the motor vehicle, and for coupling the mobile device to the motor vehicle via the Bluetooth connection based on the position of the mobile device and the Bluetooth Low Energy connection.

A method of identifying item selection by a user, the method comprising: receiving signals at a receiver of a fixed terminal from a transmitter of a mobile terminal associated with the user, generating a signature at the receiver of the fixed terminal of the movement of the user based on changes in the signals received from the transmitter, matching the signature with prior stored movement information to determine the movement of the user, and identifying the item being selected by the user based on the determined movement of the user.

A light emitting system comprises an angularly varying light emitting device (AVLED) operable to individually adjust light flux output from the one or more light sources into different angular bins in the environment and a light sensor positioned to receive light from the environment. The AVLED emits light flux into different angular bins in the environment, the at least one light sensor provides first information related to light from the light flux from each of the different angular bins reflected from the environment in one or more spatial zones, and the AVLED adjusts the light flux output in at least one angular bin based at least in part on analysis of the first information received by the light sensor and a target light property for the one or more spatial zones. The target light property may be luminance, irradiance, or illuminance.