1. A method comprising: obtaining a plurality of samples of a plurality of signals from a plurality of transmitter-receiver pairs, a transmitter-receiver pair configured to transmit a signal and receive the signal reflected by an object; identifying a plurality of integer multiples of a sample-time distance; determining with a processor, using a logic encoded in one or more non-transitory computer-executable storage media, a plurality of intersection points, an intersection point indicating an intersection for the identified plurality of integer multiples of the sample-time distance; selecting a subset of samples corresponding only to the intersection points; and generating image data from the selected subset of samples, the image data used to generate an image of the object.