Apparatus and methods determine the rotational position of a spinning object. A satellite positioning system can be used to determine the spatial position of an object, which in turn can be used to guide the object. However, when the object is spinning, such as an artillery shell, then the rotational orientation should be known in order to properly actuate the control surfaces, such as fins, which will also be spinning.

A method includes obtaining signal information based on wireless signals received from a target electronic device via a first antenna pair and a second antenna pair. The first and second antenna pairs are aligned along different axes. The signal information includes channel information, range information, a first angle of arrival (AoA) based on the first antenna pair, and a second AoA based on the second antenna pair. The method also includes obtaining tagging information that identifies an environment in which the electronic device is located. The method also includes generating encoded information from a memory module based on the tagging information. The method further includes initializing a field of view (FoV) classifier based on the encoded information. Additionally, the method includes determining whether the target electronic device is in a FoV of the electronic device based on the FoV classifier operating on the signal information.

A method includes obtaining signal information based on wireless signals received from a target electronic device via a first antenna pair and a second antenna pair. The first and second antenna pairs are aligned along different axes. The signal information includes channel information, range information, a first angle of arrival (AoA) based on the first antenna pair, and a second AoA based on the second antenna pair. The method also includes obtaining tagging information that identifies an environment in which the electronic device is located. The method also includes generating encoded information from a memory module based on the tagging information. The method further includes initializing a field of view (FoV) classifier based on the encoded information. Additionally, the method includes determining whether the target electronic device is in a FoV of the electronic device based on the FoV classifier operating on the signal information.

Approaches are described for antenna configuration in an antenna array of limited array size and channel state information (CSI) collection and analysis, to improve accuracy of angle of arrival (AoA) estimations for localizing a client device's position. Signals can be received from groups of antennas and CSI data can be generated from the signals. The CSI data can be combined, where the combined CSI data represents CSI data measurements of multiple signals received from a plurality of antenna subsets, without requiring physical installation of additional antennas to the limited antenna array to make the CSI data measurements. The angle of arrival (AoA) of the signals is estimated based on the combined CSI, and the AoA estimation can be used to determine the client device's location, and for other location services, such as identifying a person's location, tracking and managing inventory of objects, commute prediction, and the like.

A device including an antenna and a control method thereof are provided. In the method, a base station receives, from at least one terminal, a reference signal transmitted through at least one beam based on beam sweeping. Also, the base station calculates an angle between the base station and the at least one terminal transmitting the reference signal by using the received reference signal for each beam, and computes an optimal antenna orientation of a base station antenna of the base station by using the calculated angle. Further, the base station adjusts an orientation of the base station antenna according to the optimal antenna orientation of the base station antenna.

A device including an antenna and a control method thereof are provided. In the method, a base station receives, from at least one terminal, a reference signal transmitted through at least one beam based on beam sweeping. Also, the base station calculates an angle between the base station and the at least one terminal transmitting the reference signal by using the received reference signal for each beam, and computes an optimal antenna orientation of a base station antenna of the base station by using the calculated angle. Further, the base station adjusts an orientation of the base station antenna according to the optimal antenna orientation of the base station antenna.

A radio presence-advertising signal (PAS) a PAS emitter is simultaneously received at two or more co-located directional antennas that are coupled to respective radio receivers. The antennas have reception sensitivity lobes that overlap to define a region of interest at the overlap. Substantially cotemporaneous signal strength indications are obtained from the radio receivers. A difference signal representative of a difference between two of the obtained signal strength indications of the respective antennas is generated. An average signal representative of a running average of two or more of the obtained signal strength indications is generated and used to produce a normalized confidence indicator indicating a level of confidence that the PAS emitter is disposed inside (e.g., centered in) the region of interest or alternatively indicating a level of confidence that the PAS emitter is disposed outside the region of interest. Action is taken or avoided based on the confidence signal.

A system and method that can determine the direction of origin within 360 degrees around an antenna array for an emitted signal with a high degree of accuracy, even when the array is installed in a corrupted or unclean environment. Further, the provided system and method can provide a more accurate indication of direction despite polarization of the detected signal. Finally, the provided system and method can provide accurate results from phase measurements, amplitude measurements, or both phase and amplitude measurements, from an emitted signal where a phase network can be used to tailor the amplitude and phase variations versus spatial angle to best match the receiver measurement accuracies.

A system and method that can determine the direction of origin within 360 degrees around an antenna array for an emitted signal with a high degree of accuracy, even when the array is installed in a corrupted or unclean environment. Further, the provided system and method can provide a more accurate indication of direction despite polarization of the detected signal. Finally, the provided system and method can provide accurate results from phase measurements, amplitude measurements, or both phase and amplitude measurements, from an emitted signal where a phase network can be used to tailor the amplitude and phase variations versus spatial angle to best match the receiver measurement accuracies.

The present invention relates to a directional antenna module comprising: at least one antenna array having at least two antenna elements connected to a 180-degree hybrid providing an inphase summation signal and an out-of-phase summation signal of the antenna signals received from the antenna elements and a switching element adapted to switch between the inphase summation signal and the out-of-phase summation signal output by said 180-degree hybrid in response to a direction finding mode control signal (DFM-CRTL) to provide an antenna output signal at an antenna module output of said directional antenna module. The present invention further relates to a method for direction finding of a signal source.