Patent ID: 9207313
Filing Date: 2015-12-08
Classification: G01S,H01Q,H04B,H04K

Abstract:
1. A radar system configured to detect at least one target, the system comprising: a transmit antenna array including a plurality of antenna elements arranged within a plurality of subarrays, each subarray being disposed at predetermined position relative to an antenna array boresight; a transmit beamformer coupled to the transmit antenna array, the transmit beamformer being configured to generate a plurality of unique transmit waveforms, each of the unique transmit waveforms being directed to a corresponding one of the plurality of subarrays such that each of the plurality of antenna elements within a subarray transmits the same unique transmit waveform; an adaptive processor coupled to a receive antenna array and configured to derive a plurality of adaptive weight factors from a plurality of receive signals provided by the plurality of antenna elements, the adaptive processor applying the plurality of adaptive weight factors to each subarray to provide a plurality of weighted signals; a correlator system including a plurality of correlator elements coupled to the adaptive processor, each correlator element being configured to detect signal components corresponding to one unique transmit waveform from each of the plurality of weighted signals and provide one unique weighted receive waveform based on the detected signal components, whereby the correlator system provides a plurality of unique receive waveforms substantially corresponding to the plurality of unique transmit waveforms; and a receive beamformer coupled to the correlation system, the receive beamformer configured to derive an angular estimate of at least one target relative to the boresight from the plurality of unique receive waveforms.