Systems and methods for locating a position of a target object are provided. The target object can be equipped with a plurality of spatially distributed antennas, and can be located within a network of a plurality of anchors at fixed locations. A plurality of anchor pairs can be assigned. Each anchor pair can include at least two anchors. The anchor pairs can transmit and receive range request (REQ) and range response (RSP) packets. The REQ and RSP packets can be received by the antennas on the target object. Distance differences between the target object to the first anchor and from the target object to the second anchor of each anchor pair can be estimated, based on times at which the REQ packet and the RSP packet are received at the target object. The position of the target object can be estimated based on the distance differences.

Provided is a measuring apparatus using a beacon tag. More particularly, the measuring apparatus uses a beacon tag which is simple in configuration, easy to carry and use, and has low manufacturing cost, including: three reference beacon tags arranged in a specific space; a distance measuring unit including a distance measuring sensor measuring a distance to a target, a measurement direction detection unit detecting a measurement direction of the distance measuring sensor, and a measuring beacon tag provided in a low part of the distance measuring sensor; a position detection unit: calculating relative coordinates of the measuring beacon tag; and detecting relative coordinates of the target on the basis of the relative coordinates of the measuring beacon tag, the distance between the target and the distance measuring sensor, and the measurement direction of the distance measuring sensor.

Position information estimation in a distributed radio frequency (RF) communications system is provided. Embodiments disclosed herein facilitate high-precision estimations of positions, orientations, velocities, and acceleration of network nodes in a distributed RF network (e.g., including base stations and vehicles, such as aircraft or unmanned aerial systems (UASs)). Modern radio systems must adapt to limited spectral access by reducing spectrum demand and increasing operational efficiency. In this regard, an RF system is provided which simultaneously performs positioning and communications tasks. This system specifically addresses the issue of spectral congestion by employing an extremely efficient positioning strategy and using a joint waveform that simultaneously enables both tasks. This efficiency in turn supports more users in a given frequency allocation.

A method for specifying an object, includes: determining whether a pointing device is in a pointing mode or a control mode; determining a first position of a first locator and a second position of a second locator in the pointing device in a virtual space, when the pointing device is in the pointing mode; determining a pointing of the pointing device based on the first position of the first locator and the second position of the second locator; and determining a specified virtual object based on the pointing of the pointing device.

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. 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. The apparatus selects a subset of transform indices having more significant transform values than the remaining transform indices and compresses the transform indices by encoding each transform index exploiting a probability of occurrence of an index value of a respective transform index. The same or another apparatus decodes the compressed transform indices again for use in position operations.

Various techniques are provided for receiving, by a base station (BS) from a user equipment (UE), a communication including a feature vector, storing, by the BS, a dataset including one or more feature vectors associated with the UE, communicating, by the BS to a network device, the dataset associated with the UE, receiving, by the BS from the network device, a machine learning (ML) model, the ML model being trained, using the dataset, to detect UE orientation, and communicating, by the BS to the UE, the trained ML model.

Provided is a technology for increasing accuracy of position estimation by estimating a position of a signal source based on an error due to altitudes of a sensor and a signal source and an error due to a pitch of an aircraft as well as an error due to curvature of the earth. At this time, a position estimation method may include receiving measurement data from a plurality of sensors, estimating first position data of the signal source based on the measurement data, identifying an altitude error of the first position data, and estimating second position data that is data obtained by correcting the first position data based on the altitude error.

A radio localization system and a method for determining an orientation of an object are disclosed. The radio localization system comprises a first transceiver configured for being attached to an object and one or more second transceivers. The first transceiver is configured for measuring one or more characteristics of a radio signal received from a second transceiver and/or the one or more second transceivers are configured for measuring one or more characteristics of a radio signal received from the first transceiver. Furthermore, the radio localization system comprises processing means configured for determining an orientation of the object based on a radiation pattern and/or a spatial absorption pattern associated with the first transceiver as attached to the object, and one or more measured characteristics of one or more received radio signals.

A method of direction finding (DF) positioning based on a simplified antenna platform format in a wireless communication network is proposed. A receiver receives antenna platform format information of a transmitter having multiple antenna elements. The antenna platform format information comprises an antenna platform format indicator, antenna platform position and orientation information, a number of antenna elements, and switching delay, phase center, and polarization information for each antenna element. The receiver receives a plurality of direction finding sounding signals transmitted from the transmitter via the multiple antenna elements. The receiver performs a DF algorithm based on the plurality of DF sounding signals and the antenna platform format information and thereby estimating a DF solution. Finally, the receiver determines its own location information based on the estimated DF solution.

Systems and methods for locating a position of a target object are provided. The target object can be equipped with a plurality of spatially distributed antennas, and can be located within a network of a plurality of anchors at fixed locations. A plurality of anchor pairs can be assigned. Each anchor pair can include at least two anchors. The anchor pairs can transmit and receive range request (REQ) and range response (RSP) packets. The REQ and RSP packets can be received by the antennas on the target object. Distance differences between the target object to the first anchor and from the target object to the second anchor of each anchor pair can be estimated, based on times at which the REQ packet and the RSP packet are received at the target object. The position of the target object can be estimated based on the distance differences.