Bistatic SAR imaging geometry performance metric

John C. McIntosh; Candace E. Clary

doi:10.1117/12.542114

2 September 2004 Bistatic SAR imaging geometry performance metric

John C. McIntosh, Candace E. Clary

Proceedings Volume 5427, Algorithms for Synthetic Aperture Radar Imagery XI; (2004) https://doi.org/10.1117/12.542114
Event: Defense and Security, 2004, Orlando, Florida, United States

Abstract

Two bistatic SAR image quality metrics are postulated. The combination of the two metrics provide a quick and computationally non-intensive means of predicting bistatic SAR image quality as a function of collection geometry. The metrics are based on local orthogonality criteria. By noting the fact that all SAR imaging techniques essentially map the downrange and Doppler frequency onto the image plane, it is observed that the downrange and crossrange direction vectors can be obtained via the gradients of the isorange and isoDoppler contours respectively. Using the criteria that maximum image information content is obtained if the downrange and crossrange directions are orthogonal, a metric is postulated which relates the isorange and isoDoppler contour grandients in such a way as to be maximum under such orthogonal conditions. A secondary measure of merit is also postulated related to isoDoppler contour density and crossrange resolution for a given CPI. A good qualitative correlation between the image metrics and reconstructed images of a representative collection of point scatterers was shown to exist.

Citation Download Citation

John C. McIntosh and Candace E. Clary "Bistatic SAR imaging geometry performance metric", Proc. SPIE 5427, Algorithms for Synthetic Aperture Radar Imagery XI, (2 September 2004); https://doi.org/10.1117/12.542114

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

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