A method for computing a correction to a compass heading for a portable device worn or carried by a user is described. The method involves determining a heading for the device based on a compass reading, collecting data from one or more sensors, determining if the device is indoors or outdoors based on the collected data, and correcting the heading based on the determination of whether the device is indoors or outdoors.

Disclosed are a positioning method, a gateway, and a positioning device. The positioning method comprises: receiving, by means of a Bluetooth gateway, a data packet sent by a terminal device and comprising target position information, and position information of a Bluetooth node closest to the terminal device; determining the closest Bluetooth node according to the position information of the closest Bluetooth node; receiving, by the closest Bluetooth node, a data packet sent by the terminal device and comprising CTE information; obtaining current position information of the terminal device according to the CTE information; and when the current position information of the terminal device is inconsistent with the target position information, obtaining, according to the current position information of the terminal device and the target position information, position information of a next Bluetooth node closest to the terminal device and navigation information, and sending the navigation information to the terminal device.

Disclosed embodiments facilitate combining a plurality of wireless signal measurement sets with displacement measurements within some time interval of a position request to determine a User Equipment (UE) position. A first set of wireless signal measurements may be obtained from a first set of base stations at a first time at a first location. Subsequently, a second set of wireless signal measurements from a second set of base stations may be obtained at a second time at a second location distinct from the first location. A displacement measurement (e.g .a displacement vector) between the first location and the second location may be obtained. The position of the UE at the second location may then be determined based on the first and second sets of wireless signal measurements and the displacement measurement. In some embodiments, the first and second sets of wireless signal measurements may each be deficient measurement sets.

An antenna apparatus for use in a wireless network and method of operating such an antenna apparatus are provided. The antenna apparatus has omnidirectional antenna elements and RF chains, where there are fewer RF chains than omnidirectional antenna elements. A subset of the omnidirectional antenna elements are coupled to the RF chains and sampling circuitry coupled to the RF chains samples the signals received by the subset of the omnidirectional antenna elements. This forms part of a signal detection process in which different subsets of the omnidirectional antenna elements are iteratively coupled to the RF chains. A signal sample spatial covariance matrix for the omnidirectional antenna elements is constructed from the signals sampled by the sampling circuitry at each iteration and a beamforming algorithm applied to the signal sample spatial covariance matrix parameterizes the signals received by the omnidirectional antenna elements.

The present disclosure relates to a vehicle imaging apparatus (2) having a location determining module (10) for determining the relative location of a remote imaging apparatus (3). The location determining module (10) is configured to receive a tracking signal (S2) from a remote transmitter (16) associated with the remote imaging apparatus (3). An image receiver module (7) is provided to receive image data (DT) transmitted by the remote imaging apparatus (3). At least one image processor (5) is provided to process the image data (DT) in dependence on the determined location of the remote imaging apparatus (3). The present disclosure also relates to a remote imaging apparatus (3) for mounting to a trailer (T). The remote imaging apparatus (3) having a camera (CT); and an image transmitter (14) for transmitting image data (DT) generated by the camera (CT). A tracking module (15) is disposed on the remote imaging apparatus (3) to enable the relative location of the remote imaging apparatus (3) to be determined. The tracking module (15) has a remote transmitter (16) configured to transmit a tracking signal (S2) to a location determining module (10). The disclosure also relates to a vehicle imaging system (1) including a vehicle imaging apparatus (2) and a remote imaging apparatus (3).

A position tracking system includes one or more beacons and one or more sensor pairs. Each of the one or more sensor pairs is configured to be disposed on equipment that moves within a facility. Each of the one or more sensor pairs includes a motion sensor and a beacon sensor configured to receive signals from the one or more beacons. The position tracking system also include a control system, which include a processor configured to receive a first signal collected by the motion sensor, receive a second signal collected by the beacon sensor, compute a first location and/or orientation based on the first signal, and determine a second location and/or orientation based on the second signal.

An antenna apparatus for use in a wireless network and method of operating such an antenna apparatus are provided. A wireless network controller provides a configuration of such an antenna apparatus, a method of operating such a wireless network controller, and a resulting wireless network. The antenna apparatus comprises a directional antenna and a uniform circular antenna array. The directional antenna can be rotatably positioned about an axis with respect to a fixed mounting portion of the apparatus in dependence on wireless signals received by the antenna array. The antenna array allows the antenna apparatus to receive wireless signals isotropically and thus to accurately monitor the wireless signal environment in which it finds itself. The antenna apparatus can thus monitor and characterise incoming signals, both from external interference sources and from other network nodes, and the directional antenna can then be positioned in rotation to improve the network throughput.

Systems and methods for spatial tracking using a hybrid signal are disclosed. A method for spatial tracking using a hybrid signal may include: receiving, from a peripheral unit and via an antenna array of a central unit, a signal that includes inertial measurement data from an inertial measurement unit (IMU) of the peripheral unit, and a constant tone extension (CTE); determining, based on the CTE, direction data for the peripheral unit; and determining, based on the direction data and the inertial measurement data, spatial tracking data for the peripheral unit.

A rotatable antenna apparatus has a fixed unit for attachment of the apparatus to an external structure, and a rotatable unit mounted on the fixed unit and comprising an antenna assembly and processing circuitry coupled to the antenna assembly for signal processing. An interface unit, coupled to both the fixed unit and the rotatable unit, routes a cable to provide a wired connection from the fixed unit to the processing circuitry. The interface unit includes a cable housing within which a coiled length of the cable is enclosed. A control mechanism coupled to the interface unit constrains the amount to which the length of cable is wound and unwound within the cable housing to inhibit application of a stretching stress on the cable during rotatable unit rotation. This provides a very efficient, cost effective mechanism for providing a wired connection to the processing circuitry included within the rotatable unit.

Orientation-independent antennas and associated beamforming circuits, to provide polarization-independent determination of position. An Indoor Positioning System (IPS) may utilize beacon or tag devices equipped with orientation-independent antennas to determine the location of nearby objects. The system can exist in many different customizable configurations, sometimes utilizing orientation-independent antennas embedded in smartphones that serve as beacon or tag devices. The devices, systems and methods described herein may be used for an IPS in a residential setting, a commercial setting (like a department store), an event or workplace, or an industrial setting.