Multibaseline IFSAR for 3D target reconstruction

Emre Ertin; Randolph L. Moses; Lee C. Potter

doi:10.1117/12.783893

15 April 2008 Multibaseline IFSAR for 3D target reconstruction

Emre Ertin, Randolph L. Moses, Lee C. Potter

Proceedings Volume 6970, Algorithms for Synthetic Aperture Radar Imagery XV; 697008 (2008) https://doi.org/10.1117/12.783893
Event: SPIE Defense and Security Symposium, 2008, Orlando, Florida, United States

Abstract

We consider three dimensional target construction from SAR data collected on multiple complete circular apertures at different elevation angle. The 3-D resolution of circular SAR systems is constrained by two factors: the sparse sampling in elevation and the limited azimuthal persistence of the reflectors in the scene. Three dimensional target reconstruction with multipass circular SAR data is further complicated by nonuniform elevation spacing in real flight paths and non-constant elevation angle throughout the circular pass. In this paper we first develop parametric spectral estimation methods that extend standard IFSAR method of height estimation to apertures at more than two elevation angles. Next, we show that linear interpolation of the phase history data leads to unsatisfactory performance in 3-D reconstruction from nonuniformly sampled elevation passes. We then present a new sparsity regularized interpolation algorithm to preprocess nonuniform elevation samples to create a virtual uniform linear array geometry. We illustrate the performance of the proposed method using simulated backscatter data.

Citation Download Citation

Emre Ertin, Randolph L. Moses, and Lee C. Potter "Multibaseline IFSAR for 3D target reconstruction", Proc. SPIE 6970, Algorithms for Synthetic Aperture Radar Imagery XV, 697008 (15 April 2008); https://doi.org/10.1117/12.783893

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