A maximum-likelihood beamspace processor for improved search and track

Author

Davis, Richard M. ; Fante, Ronald L.

Author_Institution

MITRE Corp., Bedford, MA, USA

Volume

49

Issue

7

fYear

2001

fDate

7/1/2001 12:00:00 AM

Firstpage

1043

Lastpage

1053

Abstract

The authors describe a two-stage digital beamforming architecture for use in radar. The first stage uses digitized subarray voltages to form a number of highly overlapped adaptive beams. The beams are themselves adaptively weighted during the second stage. Maximum-likelihood processing is used in the second stage to estimate target amplitude and angle of arrival. It is shown that the new architecture supports improved search and track performance compared to traditional systems that use a single receive beam and monopulse processing to measure angle

Keywords

antenna phased arrays; array signal processing; direction-of-arrival estimation; phased array radar; radar signal processing; radar tracking; search radar; target tracking; adaptively weighted beams; angle measurement; angle of arrival estimation; digitized subarray voltages; maximum-likelihood beamspace processor; maximum-likelihood processing; monopulse processing; overlapped adaptive beams; phased-array antennas; radar tracking; search performance; search radar; target amplitude estimation; track performance; two-stage digital beamforming architecture; Antenna measurements; Array signal processing; Frequency; Interference; Maximum likelihood detection; Maximum likelihood estimation; Pulse compression methods; Radar antennas; Radar tracking; Voltage;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.933484

Filename

933484