Matched filter response of a linear array with time-varying phase weights

Author

Plumb, R.G.

Author_Institution

Dept. of Electr. & Comput. Eng., Kansas Univ., Lawrence, KS

Volume

29

Issue

3

fYear

1993

fDate

7/1/1993 12:00:00 AM

Firstpage

1046

Lastpage

1050

Abstract

Phased-array antennas used in radars to transmit broadband linear frequency modulated (LFM) signals suffer from array dispersion. Array dispersion decreases the matched filter signal-to-noise ratio and the range resolution of the radar. By allowing the phase weights to vary in time the amount of array dispersion can be greatly reduced and the useful instantaneous bandwidth of the array increased. Results are presented for the array output and matched filter response for a linear array using time-varying phase weights and are compared with those for a traditional phased array

Keywords

antenna phased arrays; array signal processing; filtering and prediction theory; frequency modulation; matched filters; radar antennas; time-varying systems; array dispersion; broadband signals; instantaneous bandwidth; linear array; linear frequency modulated signals; matched filter signal-to-noise ratio; numerical simulation; phase weights; phased array antennas; radars; range resolution; time-varying phase weights; Broadband antennas; Chirp modulation; Frequency modulation; Linear antenna arrays; Matched filters; Phase modulation; Phased arrays; Radar antennas; Signal resolution; Signal to noise ratio;

fLanguage

English

Journal_Title

Aerospace and Electronic Systems, IEEE Transactions on

Publisher

ieee

ISSN

0018-9251

Type

jour

DOI

10.1109/7.220953

Filename

220953