Systems and methods for improved location accuracy are provided. For example, some systems can include a location engine, and a plurality of location anchors. In some embodiments, each of the plurality of location anchors can transmit or receive signals to or from an object for determining an angular orientation of the object with respect to the plurality of location anchors, and based on the angular orientation, the location engine can estimate a location of the object. In some embodiments, each of the plurality of location anchors can transmit first signals to the location engine, the location engine can receive a second signal from an object, based on the first signals and the second signal, the location engine can determine a differential pressure between the plurality of location anchors and the object, and based on the differential pressure, the location engine can estimate an altitude of the object.

Embodiments of the present disclosure provide a method for identifying an indoor environment location. The method includes an operation of obtaining a visibility map of an indoor environment. The visibility map may include a plurality of static markers in the indoor environment. The method can determine a direction of a first static marker with respect to magnetic north by an electronic device if the electronic device is located to point at the first static marker and can determine a direction of a second static marker with respect to magnetic north if the electronic device is disposed to point at the second static marker. The method can calculate an intersecting point based on the determined first static marker and second static marker and can identify a location of the electronic device in an indoor environment. The method may further include an operation of determining directions of objects (for example, first static marker and second static marker) in an indoor environment corresponding to a plurality of locations of the electronic device. Further, the method may include an operation of identifying a location of an object in an indoor environment by calculating an intersecting point of the determined directions of the objects.

This specification describes a method comprising determining an orientation of a first apparatus with respect to a second apparatus (S6.2) based on at least one radio frequency packet passed wirelessly between the first and second apparatuses, and causing performance of an active scan for the second apparatus or a third apparatus associated with the second apparatus (S6.5) only if it is determined that the orientation of the first apparatus with respect to the second apparatus satisfies at least one predetermined condition (S6.3).

The purpose is to provide a compact circularly polarized antenna while obtaining desired antenna characteristics. The circularly polarized antenna may include an antenna substrate formed with a flat film conductor configured to transmit and receive a circularly polarized wave, and a cavity formed in a surface of the antenna substrate opposite from a radiation surface. The cavity may at least partially overlap with the flat film conductor when seen in a depth direction of the cavity. The length of the cavity in at least one direction may be shorter than half of a wavelength of the circularly polarized wave.

A method and an associated system for vehicle localization are described. The system includes a first sensor unit for determining a relative movement of the vehicle in relation to at least one feature in the vehicle surroundings and a second sensor unit for detecting radar data of the vehicle surroundings. The system also includes a memory for storing a digital map, a localization unit, which is configured, for ascertaining a preliminary position indication, to localize the vehicle in the digital map based on the relative movement determined by the first sensor unit, and a position determination unit, which is configured to compare the radar data detected by the second sensor unit with the digital map while taking the preliminary position indication into account, and to determine a position of the vehicle based on the comparison.

A method of determining a position and orientation of a device is provided. The position and orientation of the device is determined based on multiple degrees of freedom (DoF) and the device is associated with a capturing device for capturing at least one image is provided. The method includes: capturing at least one image of a real object with the capturing device, and providing a coordinate system in relation to the object; providing an estimation of intrinsic parameters of the capturing device; providing pose data to compute first and second DoFs in the coordinate system, with each DoF having a confidence degree; determining an initial pose of the device; performing a pose estimation process, and calculating in the pose estimation process an estimation of the DoFs having a second confidence degree; and determining a position and orientation of the device.

A material tagging system is disclosed for use with an excavation machine. The material tagging system may have a locating device configured to generate a first signal indicative of a location of the excavation machine at a worksite, and a communication device. The material tagging system may also have at least one of an operator input device and a sensor configured to generate a second signal indicative of an identity of material in a work tool, and a controller. The controller may be configured to receive an electronic map of the worksite predicting locations of different types of material, and to make a comparison of the identity of the material with a type of material predicted to be at a location where the excavation machine was located when the material was loaded. The controller may further be configured to selectively generate and communicate an error flag based on the comparison.

An apparatus obtains a set of radio data comprising signal strength related values for radio signals transmitted by a transmitter with an association of each signal strength related value with a representation of a geographical location (201). The apparatus applies a frequency transform to the obtained set of radio data to obtain transform coefficients, each transform coefficient comprising a transform index and an associated transform value (202). The apparatus selects a subset of transform indices having more significant transform values than the remaining transform indices (203) and compresses the transform indices by encoding each transform index exploiting a probability of occurrence of an index value of a respective transform index (204). The same or another apparatus decodes the compressed transform indices again for use in position operations.

A method and corresponding apparatus are provided for network configuration selection in a wireless network comprising a plurality of nodes. A subset of the nodes are configured to simultaneously participate in a sounding process, in which a node of the subset omni-directionally transmits a predetermined signal and in which other nodes of the subset of nodes sample the predetermined signal as received by an omni-directional antenna array of that node. Measurement reports are received from the subset of nodes, each measurement report comprising a signal source angle and a received signal strength. A path loss is determined in dependence on each measurement report to generate a set of path losses covering a plurality of transmitter node receiver node pairs. Then a directional configuration is selected for a directional antenna of each node of the subset of nodes for data transmission in dependence on the set of path losses.

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.