A location estimation system includes a plurality of Kalman filters, a UWB position system, a pressure sensor, a temperature sensor and a MEMs chip that provides gyroscope, accelerometer and magnetometer information. The data is Kalman filtered to determine precise location information that is more precise any sensor that is processed to determine the probably location of a device.

Teachings herein improve selection of the positioning method(s) used to obtain positioning information responsive to a positioning request, by approaching positioning QoS holistically. Approached holistically, a joint QoS metric as taught herein takes into account the joint effect of individual QoS parameters of a positioning method, or the joint effect of multiple methods in a sequence. Processing in one or more embodiments thus includes determining a joint QoS metric for each of a plurality of candidate positioning methods or sequences, and selecting a positioning method or sequence based on those joint QoS metrics. By selecting a positioning method or sequence in this way, holistically based on joint QoS metrics rather than a piecemeal approach based on a one-by-one check of individual QoS parameters, selection proceeds flexibly according to actual QoS requirements of position-based services and/or systematically according to the joint effect of multiple positioning methods.

A method of setting up a tracking system of the type including a plurality of spaced-apart stationary nodes for tracking mobile nodes within a tracking environment, the method including using an independent localisation system to determine respective locations of at least a subset of the stationary nodes within the tracking environment.

Embodiments of the present disclosure provide a collaborative positioning method and a wireless terminal, includes: generating, by a wireless terminal, positioning request information, where the positioning request information includes a positioning precision parameter; selecting a wireless communications technology according to the positioning precision parameter, where the selected wireless communications technology is a communications manner used by the wireless terminal to perform collaborative positioning; obtaining, by using the selected wireless communications technology, first collaborative positioning information sent by a neighboring terminal, where the first collaborative positioning information includes location information of the neighboring terminal; and calculating, by the wireless terminal, a current location of the wireless terminal according to the location information of the neighboring terminal. The embodiments of the present disclosure resolve a problem that a requirement on hardware of two collaboration parties is relatively strict.

A device may determine a set of orientations or relative displacements at a set of locations. The set of locations may include at least a first location and a second location. The device may determine a set of sensor measurements relating to one or more measurable parameters at the set of locations. The device may determine, based on the set of orientations or relative displacements at the set of locations and the set of sensor measurements relating to the one or more measurable parameters at the set of locations, a path relating to the set of locations. The device may perform an action based on determining the path.

The present invention discloses a APNT service positioning and integrity monitoring method and system. The method includes the following steps: determining a positioning accuracy requirement in a target scene; when the positioning accuracy requirement is high-accuracy positioning, determining a position of an aircraft by adopting a combined positioning algorithm, and monitoring the integrity of a combined positioning by adopting a multi-solution separation mode; when the positioning accuracy requirement is low-accuracy positioning, judging whether the aircraft is a high-altitude user; if not, adopting an air-to-air positioning algorithm for a high-altitude user and a low-altitude user based on LDACS to determine the position of the aircraft, and adopting a least square residual method to monitor the integrity of the air-to-air positioning. According to different requirements of users on positioning accuracy and actual application conditions, the present invention can provide a variety of APNT alternative solutions for an aircraft.

Techniques are provided which may be implemented using various methods and/or apparatuses in a mobile device to perform a distance travelled estimate with a mobile device. The distance travelled estimate is performed by determining a quality of displacement between a base position and each new position for the mobile device, which is determined based on the displacement between the positions and their associated uncertainties. If the quality of displacement is sufficient, the distance travelled estimate is updated using the displacement between the positions. Multiple tiers may be used, where, for example, if the quality of displacement is sufficiently high, the displacement associated with a preceding position may be excised from the distance travelled estimate and replaced with the displacement associated with the new position. Additionally, if the quality of displacement is even greater, the new position may be set as the base position.

A method, system, and computer-readable medium for performing a flight check of one or more navigational aid systems. Aspects include obtaining, using an aircraft, first information associated with an accuracy of signals transmitted by a localizer. Aspects also include obtaining, using the aircraft, second information associated with an accuracy of signals transmitted by a glide slope station. Aspects also include transmitting the first information and the second information to a ground receiver for processing.

Methods, devices and systems for generating enhanced location information on or about a wireless device. A fixed wireless device (e.g., fixed infrastructure device) may be configured to determine its current location based on location information received from one or more other devices. For example, the fixed wireless device may determine its current three-dimensional location based on latitude coordinate values, longitude coordinate values, and altitude coordinate values received from a plurality of the devices that are in proximity to the fixed wireless device. The fixed wireless device may then dynamically determine whether the fixed wireless device should be included in a telecommunication resource lease based on its determined current location. The fixed wireless device may allocate its available radio frequency resources use by devices that subscribe to a different network in response to determining that it should be included in the telecommunication resource lease.

A geo-localization device and methodology use a plurality of wireless localization technologies, predictive methods and filtering to deliver accurate and reliable 3-dimensional positioning data for static and moving objects both outdoor and indoor.