Doppler measurments to resolve angle of arrival ambiguity of wide aperture radar

Abstract

A system and method to resolve angle of arrival (AOA) ambiguity in a radar system include receiving received reflections at a plurality of transceiver nodes. Each transceiver node among the plurality of transceiver nodes of the radar system receives one or more of the received reflections at respective one or more receive elements. The method includes determining candidate AOAs {circumflex over (θ)}i based on phases differences in the received reflections at the plurality of transceiver nodes, and determining Doppler frequencies fdi based on the received reflections. An estimated AOA {circumflex over (θ)} is selected from among the candidate AOAs {circumflex over (θ)}i based on matching metrics μi between the Doppler frequencies and the candidate AOAs {circumflex over (θ)}i.

Dependencies are inferred from the claim text.