Method and device for using array antenna to estimate location of source in near field

摘要

An array antenna includes two sub-arrays. Each sub-array has at least three elements with at least one unshared element. Samplers sample elements separately for the sub-arrays. A direction-of-arrival estimator uses sampling from the samplers to make a separate direction-of-arrival estimate for each sub-array for direction of arrival of a signal from a source. A source location estimator estimates distances from the source to each element based on the separate direction-of-arrival estimates from the direction-of-arrival estimator. A sampling adjuster adjusts timing of sampling performed by the samplers based on the distances from the source location estimator.