Blind phase calibration for along-track interferometry: application to Gotcha data set

Faruk Uysal; Vinay Murthy; Steven M. Scarborough

doi:10.1117/12.2058259

13 June 2014 Blind phase calibration for along-track interferometry: application to Gotcha data set

Faruk Uysal, Vinay Murthy, Steven M. Scarborough

Proceedings Volume 9093, Algorithms for Synthetic Aperture Radar Imagery XXI; 90930O (2014) https://doi.org/10.1117/12.2058259
Event: SPIE Defense + Security, 2014, Baltimore, MD, United States

Abstract

Along-Track Interferometry (ATI) has been widely used for ground moving target indication (GMTI) in airborne synthetic aperture radar (SAR) systems. In ideal cases, the ATI phase obtained using two phase centers that are aligned in the along-track dimension yield clutter-only pixels with zero phase. However, the platform's motion may create a cross-track displacement between the two phase centers and in turn offset the phase centers' baseline from the along track dimension. This cross-track offset leads to non-zero phase for clutter-only pixels, necessitating calibration for accurate GMTI. This paper proposes a blind calibration method to correct the along-track baseline error in ATI-SAR systems. The success of the proposed method is shown on a set of measured data from the Gotcha sensor.

Citation Download Citation

Faruk Uysal, Vinay Murthy, and Steven M. Scarborough "Blind phase calibration for along-track interferometry: application to Gotcha data set", Proc. SPIE 9093, Algorithms for Synthetic Aperture Radar Imagery XXI, 90930O (13 June 2014); https://doi.org/10.1117/12.2058259

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