A tracking system, comprising: multiple beacons, each associated with a different cyclic equivalence class of code-word length n, and each configured to broadcast a bit-stream comprising a repeating code-word, where the code-word belongs to the associated cyclic equivalence class; and a mobile tracking unit, comprising: a sensor, and a processor, wherein the sensor is configured to simultaneously detects at least some of the bit streams, and provide each sensed bit stream in real-time to the processor, wherein for each bit-stream received by the processor from the sensor, the processor is configured to identify the beacon that broadcasted the bit-stream using the first n received bits.

A system is provided for maneuvering a payload in an air space constrained by one or more obstacles, and may include first and second aerial vehicles coupled by a tether to a ground station. Sensor systems and processors in the ground station and aerial vehicles may track obstacles and the tether's and the vehicles' positions and attitude to maneuver the payload and the tether to carry out a mission. The sensor system may include airborne cameras providing data for a scene reconstruction process and simultaneous mapping of obstacles and localization of aerial vehicles relative to the obstacles. The aerial vehicles may include a frame formed substantially of a composite material for preventing contact of the rotors with the tether segments.

A system for determining a location of a user is provided that comprises a plurality of transmitters, each associated with a predefined physical location and each comprising a light source to provide an optical location signal; and at least one head-worn locator device with an optical receiver for receiving at least one of the optical location signals. To allow the determination of a location of a user that is wearing the head-worn locator device, each transmitter is configured to provide location information in the respectively provided optical location signal, wherein said location information corresponds to said predefined physical location of the respective transmitter.

The disclosure relates to a system for measuring the position of an object in a measurement volume, including: an optical angular measurement device, disposed with static optics, configured for measurement of the an azimuth and elevation angle of the object in the measurement volume with respect to the optical angular measurement device, a range measurement device, disposed with static component, configured for measurement of the range of the object in the measurement volume. It further relates to a use of the system and a measurement method.

A position tracking system includes an array of detection pixels coupled to a head-mounted display (HMD) configured to capture light signals reflected from an environment surrounding the HMD. The position tracking system maintains, in a database, signal data related to a plurality of positions of the HMD. The position tracking system determines signal data related to a position of the HMD, based on the light signals captured during a time instant of the position of the HMD. The position tracking system matches the determined signal data to the maintained signal data, determines a present position of the HMD based on the matching, updates position data of the HMD with the determined position, and provides the updated position data of the HMD.

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.

A method for inspecting a component includes generating measurement data of the component, using a measurement device coupled to an optical marker device. The method further includes generating co-ordinate data of the measurement device, using the optical marker device and at least one camera. The method includes generating synchronized measurement data based on the measurement data and the co-ordinate data. The method further includes retrieving pre-stored data corresponding to the synchronized measurement data, from a database. The method also includes generating feedback data based on the pre-stored data and the synchronized measurement data, using an augmented reality technique. The method includes operating the measurement device based on the feedback data to perform one or more measurements to be acquired from the component.

Techniques are disclosed for determining a light-based communication (LCom) receiver position. The techniques can be used to determine the position of a receiver relative to a specific luminaire within the field of view (FOV) of the receiver camera. The relative position may be calculated by determining the distance and the orientation of the receiver relative to the luminaire. The distance relative to the luminaire may be calculated using the observed size of the luminaire in an image generated by the receiver camera, the image zoom factor, and actual geometry of the luminaire. The orientation relative to the luminaire may be determined using a fiducial associated with the luminaire that can be used as an orientation cue. Once the position of a receiver relative to a luminaire is determined, the absolute position of the receiver may be calculated using the absolute position of the luminaire.

Embodiments disclosed pertain to the use of user equipment (UE) for the generation of a 3D exterior envelope of a structure based on captured images and a measurement set associated with each captured image. In some embodiments, a sequence of exterior images of a structure is captured and a corresponding measurement set comprising Inertial Measurement Unit (IMU) measurements, wireless measurements (including Global Navigation Satellite (GNSS) measurements) and/or other non-wireless sensor measurements may be obtained concurrently. A closed-loop trajectory of the UE in global coordinates may be determined and a 3D structural envelope of the structure may be obtained based on the closed loop trajectory and feature points in a subset of images selected from the sequence of exterior images of the structure.

A system for projecting an image, including layout information, on a surface in a building under construction has a projector mounted on a moveable support for supporting a worker at a work position in the building. The projector projects an image on a surface above the moveable support in response to an image signal defining the image to be projected. The image indicates the location of connectors, anchors, and holes to be affixed to, or cut through, the surface. A system determines the two dimensional position of the projector in the building, and a distance measuring system for determines the distance from the projector to said surface. A processor, responsive to a memory having stored building plan images, provides an image signal to the projector adjusted for the two dimensional location of the projector and for the distance from the projector to the surface.