Multiband chirp synthesis for frequency-hopped FMCW radar


Journal Article

This paper presents a method for increasing radar range resolution by stitching together non-contiguous frequency-hopped FMCW radar sweeps across different dwells. The work extends previous bandwidth extrapolation methods, designed for radar imaging of space-based objects, to applications involving clutter-dominated downward-looking radars. Multiband chirp synthesis (MCS) uses an AR model for the de-chirped radar return in frequency-separated sub-bands across multiple dwells to interpolate missing fast-time data. The method aims to achieve range resolution commensurate with the full frequency-hopped band of the radar rather than the much narrower sub-bands used during each dwell. Both pre- and post-Doppler MCS methods are discussed. Real data results are presented using a 2.4 GHz laboratory radar to synthesize a 600 MHz bandwidth return from multiple fractional sub-band dwells. © 2009 IEEE.

Full Text

Duke Authors

Cited Authors

  • Yu, J; Krolik, J

Published Date

  • December 1, 2009

Published In

Start / End Page

  • 1315 - 1319

International Standard Serial Number (ISSN)

  • 1058-6393

Digital Object Identifier (DOI)

  • 10.1109/ACSSC.2009.5469920

Citation Source

  • Scopus