Dual format algorithm for monostatic SAR

LeRoy A. Gorham; Brian D. Rigling

doi:10.1117/12.855374

21 April 2010 Dual format algorithm for monostatic SAR

LeRoy A. Gorham; Brian D. Rigling

Author Affiliations +

Proceedings Volume 7699, Algorithms for Synthetic Aperture Radar Imagery XVII; 769905 (2010) https://doi.org/10.1117/12.855374
Event: SPIE Defense, Security, and Sensing, 2010, Orlando, Florida, United States

Abstract

The polar format algorithm for monostatic synthetic aperture radar imaging is based on a linear approximation of the differential range to a scatterer, which leads to spatially-variant distortion and defocus in the resultant image. While approximate corrections may be applied to compensate for these effects, these corrections are ad-hoc in nature. Here, we introduce an alternative imaging algorithm called the Dual Format Algorithm (DFA) that provides better isolation of the defocus effects and reduces distortion. Quadratic phase errors are isolated along a single dimension by allowing image formation to an arbitrary grid instead of a Cartesian grid. This provides an opportunity for more efficient phase error corrections. We provide a description of the arbitrary image grid and we show the quadratic phase error correction derived from a second-order Taylor series approximation of the differential range. The algorithm is demonstrated with a point target simulation.

Citation Download Citation

LeRoy A. Gorham, LeRoy A. Gorham, Brian D. Rigling, Brian D. Rigling, } "Dual format algorithm for monostatic SAR", Proc. SPIE 7699, Algorithms for Synthetic Aperture Radar Imagery XVII, 769905 (21 April 2010); doi: 10.1117/12.855374; https://doi.org/10.1117/12.855374

ACCESS THE FULL ARTICLE

PERSONAL SIGN IN
Full access may be available with your subscription

Email or Username Forgot your username?

Password Forgot your password?

Show

Remember Email/Username on this computer

Remember Password

No SPIE account? Create an account
or Institutional Sign In via Shibboleth

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $14.40

Non-members: $18.00 ADD TO CART

Show All Keywords

Keywords/Phrases

Search In:

Publication Years