Design and implementation of near-field, wideband synthetic aperture beamformers

A coarray-based near-field, wideband synthetic aperture beamformer using stepped-frequency signal synthesis and post-data acquisition processing is presented. While coarray techniques offer significant reduction in the number of array elements for a given angular resolution, the hybrid subarray-step...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on aerospace and electronic systems 2004-01, Vol.40 (1), p.206-220
Main Authors: Ahmad, F., Frazer, G.J., Kassam, S.A., Amin, M.G.
Format: Article
Language:English
Subjects:
Aircraft components
Apertures
Array signal processing
Arrays
Australia
Flexibility
Image sensors
Microwave imaging
Pulse shape
Reduction
Sensor arrays
Signal resolution
Synthesis
Synthetic apertures
Transmitters
Ultrasonic imaging
Wideband
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A coarray-based near-field, wideband synthetic aperture beamformer using stepped-frequency signal synthesis and post-data acquisition processing is presented. While coarray techniques offer significant reduction in the number of array elements for a given angular resolution, the hybrid subarray-stepped frequency realization of wideband systems simplifies implementations and offers flexibility in beamforming. Proof of concept is provided using real data collected in an anechoic chamber for several pulse shapes and array weightings.
ISSN:0018-9251
1557-9603
DOI:10.1109/TAES.2004.1292154