A system and method to generate a three-dimensional mapping of an arrangement of tubular components are described. The tubular components include one or more straight pipes and one or more bent segments connected at interfaces. The system includes a plurality of electronically readable identifiers, each electronically readable identifier being disposed in proximity to one of the interfaces of two of the tubular components and each side of the interface comprising at least one RFID chip. The system also includes a reader to receive a signal from each of the plurality of electronically readable identifiers in turn and a processor to process a position of the reader and each of the signals to generate the three-dimensional mapping.

A network comprises a network apparatus constructed and arranged for each of a plurality of vehicles in radio frequency (RF) communication with each other, the network apparatus comprising: at least one first transceiver; at least one second transceiver configured to exchange RF signals with the at least one first transceiver; receiver circuitry configured to determine timing information from the acquired RF signals; memory storing information related to fixed distances between the at least one first transceiver and the at least one second transceiver; a processor coupled to the memory to access the stored information related to the fixed distances, and to the receiver circuitry to receive the timing information determined from the RF signals, the processor being configured to determine a relative position of the vehicle with respect to a receipt of the RF signals based on the stored information related to the fixed distances between each of at least three spatially separated antenna and on the timing information determined by the receiver circuitry; and a control system configured to control operation of the vehicle in response to the relative position of the vehicle, determined by the processor.

A hybrid method of estimating position of a mobile device which utilizes both received signal power and timing measurements. Received signal power of signals received by the mobile device from a plurality of cells are measured and corresponding received signal power measurements are stored. The method further includes measuring, at the mobile device, times of arrival of signals received from the plurality of cells. A plurality of time difference of arrival (TDOA) measurements are determined from the times of arrival. A power-time hybrid Gaussian maximum likelihood estimator and positioning assistance data for the plurality of cells are used to generate a maximum likelihood estimate of the position of the mobile device by evaluating a joint conditional probability of the received signal power measurements and the plurality of TDOA measurements. Gaussian random variables may be used to represent the received signal power measurements and the TDOA measurements.

An RF position tracking system for wirelessly tracking the three-dimensional position of a tracked object. The tracked object has at least one mobile antenna and at least one inertial sensor. The system uses a plurality of base antennas which communicate with the mobile antenna using radio signals. The tracked object also incorporates the inertial sensor to improve position stability by allowing the system to compare position data from radio signals to data provided by the inertial sensor.

Systems and methods for determining a location of one or more user equipment (UE) in a wireless system can comprise receiving reference signals via a location management unit having two or more co-located channels, wherein the two or more co-located channels are tightly synchronized with each other and utilizing the received reference signals to calculate a location of at least one UE among the one or more UE. Embodiments include multichannel synchronization with a standard deviation of less than or equal 10 ns. Embodiments can include two LMUs, with each LMU having internal synchronization, or one LMU with tightly synchronized signals.

It is disclosed to obtain physical layout data of radiomap based on a plurality of location information representatives, each of the location information representatives being associated with a radiomeasurement.

Various presence detection techniques are disclosed. In some embodiments, a system comprises a signal generator configured to generate a signal that includes a plurality of selected frequencies that are selected from among a set of candidate frequencies, wherein inclusion or exclusion of each candidate frequency in the signal encodes a bit of information and wherein the encoded information comprises a store identifier that identifies a retail store; and a transmitter configured to transmit the signal within the retail store; wherein presence of a device in the retail store is determined in response to reception of the signal at the device and extraction of the store identifier from the received signal by decoding the received signal.

A method and system, the method including transmitting a unique identifier of at least one radio frequency (RF) transmitter to a device in a vicinity of the RF transmitter; acquiring images of objects by a vision system, the vision system comprising at least one image capturing device and an image processing unit to determine objects in the images acquired by the image capturing device; determining, by a controller, a location of the device based on, at least in part, the unique identifier of one of the at least one RF transmitters; and determining, by the controller, a precise location of the device based on a correlation between the location of the device determined based on the unique identifier and the objects captured in the images acquired by the image capturing device.

A system for managing data related to at least one leaf node device includes a location processing engine located on a server that is remote from the leaf node device, at least one point of interest (POI) device for collecting data via Bluetooth Low Energy (BLE) communication signals from the leaf node device on each of a plurality of channels and transmitting the collected data which includes phase angle information, a reader node device for receiving and transmitting the collected data to the location processing engine and a database of the known locations of a plurality of POI devices. The reader device or the location processing engine averages the collected data across the plurality of channels, and the known locations are used along with the averaged data as a basis for determining the location of the leaf node device.

A system includes a plurality of wireless transmitters and a processor configured to: receive, from a mobile device, signal strengths of signals from the wireless transmitters as detected by the mobile device. The processor is also configured to determine a location of the mobile device in a vehicle, based on a distance from the mobile device to each of the wireless transmitters, as indicated by the received signal strengths and store the location of the mobile device as an occupant location.