Radar angular ambiguity resolution

A method comprising:

• receiving, via an antenna array, a radar signal using multiple antenna elements of the antenna array;
• generating, based on the received radar signal and using digital beamforming, a spatial response across a field of view;
• characterizing a shape of the spatial response across the field of view based on two or more data points within the spatial response;
• and
• determining, based on the shape of the spatial response, an angle of arrival of the radar signal to estimate an angular position of an object that reflected the radar signal.

A method comprising:

• receiving, via an antenna array, a radar signal using multiple antenna elements of the antenna array, the radar signal comprising multiple frequencies associated with multiple frequency sub-spectrums;
• generating, based on the received radar signal and using digital beamforming, spatial responses across a field of view, the spatial responses respectively associated with the multiple frequency sub-spectrums, each spatial response comprising an amplitude response having at least two amplitude peaks within the field of view, the amplitude peaks associated with an angular ambiguity;
• and
• resolving the angular ambiguity to determine a direction to an object that reflected the radar signal, the resolving comprising:
• characterizing a shape of at least one of the spatial responses across the field of view based on two or more data points within the spatial response, the shape identifying one of the amplitude peaks as being associated with the direction to the object;
• or
• generating a phase coherence map using complex coherence and at least two of the spatial responses;
• and identifying the direction to the object based on the phase coherence map.