US 11,876,582 B2
Hybrid beam steering radar
Abdullah Ahsan Zaidi, San Diego, CA (US); Kenneth Ray Carroll, Huntington Beach, CA (US); Soren Shams, Carlsbad, CA (US); and Maha Achour, Encinitas, CA (US)
Assigned to Metawave Corporation, Carlsbad, CA (US)
Filed by Metawave Corporation, Carlsbad, CA (US)
Filed on Jul. 20, 2021, as Appl. No. 17/381,051.
Claims priority of provisional application 63/054,201, filed on Jul. 20, 2020.
Prior Publication US 2022/0021419 A1, Jan. 20, 2022
Int. Cl. H04B 7/0426 (2017.01); H04B 7/08 (2006.01); H04B 7/06 (2006.01)
CPC H04B 7/043 (2013.01) [H04B 7/0686 (2013.01); H04B 7/086 (2013.01); H04B 7/0817 (2013.01); H04B 7/0857 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A hybrid radar system, comprising:
a transmit antenna array configured to generate a radio frequency (RF) beam covering an azimuth field of view and scanning a range of elevation angles, wherein the transmit antenna array comprises a plurality of antenna elements configured for transmitting a transmit beam;
a receive antenna array configured to receive a reflected RF beam from an environment of a target;
a transceiver coupled to the transmit antenna array and the receive antenna array; and
an azimuth detection module coupled to the transceiver and configured to identify an azimuth angle of arrival upon a detection of the target from the environment by correlation of signals transmitted from at least a portion of the plurality of antenna elements, wherein the azimuth detection module is further configured to determine the azimuth angle of arrival of the detected target by:
(i) performing a multi-dimensional Fast Fourier Transform (FFT) of the correlated signals transmitted from the at least a portion of the plurality of antenna elements, and
(ii) performing non-coherent integration and constant false alarm rate detection of the signals.