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.

An object orientation system, an object orientation method and an electronic apparatus are provided. A signal transmitter includes a directional antenna and emits a first wireless signal. A plurality of signal receivers are respectively disposed in a plurality of orientations. The signal receivers receive the first wireless signal and measure a plurality of first received signal strength indicators of the first wireless signal. The electronic apparatus is coupled to the signal receivers, estimates a plurality of strength variation data of the first received signal strength indicators measured by the signal receivers, and obtains orientation information of the signal transmitter according to the strength variation data corresponding to the signal receivers.

Techniques are disclosed for determining AOA of one or more radar pulses received at a vehicle and originating from a source. The techniques are particularly well-suited to provide pilots with a more accurate determination of the azimuth angle to the radar source, although ground-based and water-based vehicles may benefit as well. Some embodiments discussed herein determine a true estimation of both azimuth and elevation angles, with reference to an aircraft's body-centered coordinate system, to the radar source. These parameters can also be used to determine a more accurate position on the ground for the radar source.

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.

A locating method and device, and a computer storage medium are provided for realizing that an anchor node apparatus locates a beacon apparatus in a range of 360 degrees. The method is applied to an anchor node apparatus. The anchor node apparatus comprises at least three first antennas, wherein a set location of at least one first antenna is not collinear with set locations of the remaining first antennas. The method comprises: receiving a signal sent by a second antenna of a beacon apparatus by means of each of the first antennas; according to a phase of each of the first antennas for receiving the signal, obtaining a phase difference between every two first antennas for receiving the signal; extracting at least three phase differences closest to a pointed orientation; and based on the at least three phase differences, determining the orientation of the beacon apparatus.

Mechanisms for selecting beam direction for a radio communications device are provided. A method is performed by the radio communications device. The method includes obtaining radio channel estimates of a radio channel on which radio waves have been transmitted between the radio communications device and another radio communications device at an angle of arrival and departure. The method includes determining a Doppler shift from the radio channel estimates. The method includes estimating at least one of the angle of arrival and departure of the radio waves based on the Doppler shift. The method includes selecting a beam direction for a signal to be transmitted between the radio communications device and this another radio communications device over the radio channel according to the estimated angle of arrival or departure.

Systems and methods are provided to simultaneously determine both angle of arrival (AoA) and angle of departure (AoD) of a signal transmitted between two or more radio frequency (RF)-enabled wireless devices (e.g., such as BLE modules). The disclosed systems and methods may be so implemented in one embodiment to determine AoD even in the case where the transmitting wireless device is at the same time operating in a departure (or AoD) transmitting mode by transmitting a RF signal from multiple antenna elements of at least one switched antenna array using a given switching pattern or sequence implemented by an array switch.

Methods and devices for, among other applications, locating an emitter, comprises an array of receivers configured in different angular positions about the array relative to a corresponding array location axis, to receive a signal from the emitter having at least one burst containing a train of pulses, and at least one processor configured to profile pulse count values at each receiver, from one receiver to another in the array in relation to their respective angular positions, to designate a maximum peak angular position associated with a maximum pulse count value, and to attribute the peak angular position to an angular emitter location.

A safety system and a method for localizing at least one object having a control and evaluation unit have at least one radio location system. The radio location system has at least three arranged radio stations. Position data of the object can be determined by means of the radio location system and can be transmitted to the control and evaluation unit. At least three radio transponders are arranged at the object, each arranged spaced apart from one another and the three radio transponders form different points on a plane and unambiguously define the plane in space. The control and evaluation unit is configured to compare the position data of the radio transponders and to form checked position data of the object. The control and evaluation unit is configured to form orientation data of the object from the position data of the radio transponders.

The disclosure pertains to using ultra-wideband (UWB) radio communications to execute a pedestrian-vehicle rendezvous. In one example operation, a personal device such as a smartphone, is used to identify a location of a vehicle with a first level of accuracy. For example, the smartphone may be used by a pedestrian to obtain GPS location coordinates of a ride-hail vehicle summoned by the pedestrian. The vehicle may be located relatively far from the pedestrian. The smartphone may be configured to automatically establish a UWB radio link with a UWB transponder in the vehicle and/or a smartphone carried by a driver of the ride-hail vehicle, when the vehicle is within range to establish UWB communications. The UWB radio link may be used to execute one or more of various procedures to locate the vehicle with a second level of accuracy that is higher than the first level of accuracy.