Abstract

Uncompensated phase errors present in synthetic-aperture-radar data can have a disastrous effect on reconstructed image quality. We present a new iterative algorithm that holds promise of being a robust estimator and corrector for arbitrary phase errors. Our algorithm is similar in many respects to speckle processing methods currently used in optical astronomy. We demonstrate its ability to focus scenes containing large amounts of phase error regardless of the phase-error structure or its source. The algorithm works extremely well in both high and low signal-to-clutter conditions without human intervention.

© 1989 Optical Society of America

Two-dimensional phase correction of synthetic-aperture-radar imagery

Dennis C. Ghiglia and Gary A. Mastin
Opt. Lett. 14(20) 1104-1106 (1989)

Optical synthetic-aperture radar processor architecture with quadratic phase-error correction

Fred M. Dickey and J. Jeff Mason
Opt. Lett. 15(20) 1162-1164 (1990)

Speckle reduction in synthetic-aperture-radar imagery

E. R. Harvey and G. V. April
Opt. Lett. 15(13) 740-742 (1990)

Speckle reduction in synthetic-aperture radars

Leonard J. Porcello, Norman G. Massey, Richard B. Innes, and James M. Marks
J. Opt. Soc. Am. 66(11) 1305-1311 (1976)

Coherence and speckle reduction in compounded correlated phased arrays: synthetic aperture radar

S. D. Silverstein
J. Opt. Soc. Am. A 3(11) 1925-1934 (1986)