A system and method for an indoor position localization of a target device is provided. A network comprising a server and a plurality of anchors is configured to fuse two radio technologies to estimate a location of the target device within an indoor facility. The method includes obtaining, via a first radio technology, a first candidate location of a target device. The method also includes obtaining, via a second radio technology, a plurality of second candidate locations of the target device. The method further includes selecting one of the second candidate locations as an estimated position of the target device based on a proximity of each of the second candidate locations to the first candidate location.

A system and method for an indoor position localization of a target device is provided. A network comprising a server and a plurality of anchors is configured to fuse two radio technologies to estimate a location of the target device within an indoor facility. The method includes obtaining, via a first radio technology, a first candidate location of a target device. The method also includes obtaining, via a second radio technology, a plurality of second candidate locations of the target device. The method further includes selecting one of the second candidate locations as an estimated position of the target device based on a proximity of each of the second candidate locations to the first candidate location.

Disclosed are a positioning communication device, a positioning method, and a computer storage medium. The positioning communication device comprises: at least two positioning antenna groups (111), at least used for receiving a positioning signal sent by a beacon, wherein each positioning antenna group (111) comprises two positioning antennas arranged separately, and the positioning ranges of different positioning antenna groups (111) are at least partially different; a selection switching module (112) respectively connected to the at least two positioning antenna groups (111); and a processing module (113), connected to the positioning antenna groups (111) by means of the selection switching module (112), and used for controlling, according to orientation information of the beacon at a previous moment, the positioning antenna group (111) turned on by the selection switching module (112), and determining, according to the positioning signal received by the positioning antenna group (111) turned on, orientation information of the beacon at the current moment.

Disclosed are a positioning communication device, a positioning method, and a computer storage medium. The positioning communication device comprises: at least two positioning antenna groups (111), at least used for receiving a positioning signal sent by a beacon, wherein each positioning antenna group (111) comprises two positioning antennas arranged separately, and the positioning ranges of different positioning antenna groups (111) are at least partially different; a selection switching module (112) respectively connected to the at least two positioning antenna groups (111); and a processing module (113), connected to the positioning antenna groups (111) by means of the selection switching module (112), and used for controlling, according to orientation information of the beacon at a previous moment, the positioning antenna group (111) turned on by the selection switching module (112), and determining, according to the positioning signal received by the positioning antenna group (111) turned on, orientation information of the beacon at the current moment.

Systems and methods are provided in which a direction of arrival of a radio frequency (RF) signal received by a plurality of antennas is determined. A plurality of first converter receives RF signals from the plurality of antennas and outputs a minimum of a first optical signal and a second optical signal each modulated by their corresponding RF signal. A plurality of second converters receives a minimum of the first optical signal via a first optical channel that introduces a first delay and the second optical signal via a second optical channel that introduces a second delay. The second converter outputs a first RF signal that corresponds to the RF modulation on the first optical signal and a second RF signal that corresponds to the RF modulation on the second optical signal. A switch serially receives, from the second converter outputs, the first RF signal and the second RF signal. A direction finding subsystem determines a direction of arrival using a phase difference between the first RF signal and the second RF signal.

A method is disclosed for determining a relative pose between a primary winding structure and a secondary winding structure of a system for inductive power transfer to a vehicle. The method includes obtaining first output values generated by multiple receiving devices of a first radio direction finding system. The first radio direction finding system further includes a transmitting device. The receiving devices generate the output values in response to receiving a position signal transmitted by the transmitting device. The method includes determining a motion value of the vehicle. The method includes providing the obtained first output values and the motion value as input values to a model. The method includes determining a first relative pose based on the model. The method includes determining the relative pose based on the first relative pose.

A method is disclosed for determining a relative pose between a primary winding structure and a secondary winding structure of a system for inductive power transfer to a vehicle. The method includes obtaining first output values generated by multiple receiving devices of a first radio direction finding system. The first radio direction finding system further includes a transmitting device. The receiving devices generate the output values in response to receiving a position signal transmitted by the transmitting device. The method includes determining a motion value of the vehicle. The method includes providing the obtained first output values and the motion value as input values to a model. The method includes determining a first relative pose based on the model. The method includes determining the relative pose based on the first relative pose.

An emitter positioning method based on spectrum monitoring big data processing comprises the following steps: station monitoring data obtaining, multi-station spectrum monitoring data-based emitter direction finding, multi-station spectrum monitoring data-based emitter cross positioning, and emitter continuous positioning.

A radio frequency identification (RFID) system includes an array of antennas to distinguish line-of-sight (LOS) paths from non-line-of-sight (NLOS) paths. The distance between adjacent antennas in the array of antennas is less than half the wavelength of the radio frequency (RF) signal of the system. Each antenna in the antenna array is also digitally controlled to change relative phase difference among the antennas, thereby allowing digital steering of the array of antennas across angles of arrival (AOAs) between 0 and π. The digital steering generates a plot of signal amplitudes as a function of AOAs. LOS paths are distinguished from NLOS paths based on the shapes (e.g., depth, gradient, etc.) of local extremes (e.g., maxima or minima) in the plot.

A radio frequency identification (RFID) system includes an array of antennas to distinguish line-of-sight (LOS) paths from non-line-of-sight (NLOS) paths. The distance between adjacent antennas in the array of antennas is less than half the wavelength of the radio frequency (RF) signal of the system. Each antenna in the antenna array is also digitally controlled to change relative phase difference among the antennas, thereby allowing digital steering of the array of antennas across angles of arrival (AOAs) between 0 and π. The digital steering generates a plot of signal amplitudes as a function of AOAs. LOS paths are distinguished from NLOS paths based on the shapes (e.g., depth, gradient, etc.) of local extremes (e.g., maxima or minima) in the plot.