Sparse signal models for data augmentation in deep learning ATR

T Agarwal, N Sugavanam, E Ertin - Remote Sensing, 2023 - mdpi.com
Automatic target recognition (ATR) algorithms are used to classify a given synthetic aperture
radar (SAR) image into one of the known target classes by using the information gleaned …

High resolution mimo radar sensing with compressive illuminations

N Sugavanam, S Baskar, E Ertin - IEEE Transactions on Signal …, 2022 - ieeexplore.ieee.org
We present a compressive radar design that combines multitone linear frequency modulated
(LFM) waveforms in the transmitter with a classical stretch processor and sub-Nyquist …

Models of anisotropic scattering for 3D SAR reconstruction

N Sugavanam, E Ertin - 2022 IEEE Radar Conference …, 2022 - ieeexplore.ieee.org
We study different modeling approaches to anisotropic scattering from man-made objects to
derive novel solutions to the 3D imaging problem from multi-pass circular synthetic aperture …

MRF model-based joint interrupted SAR imaging and coherent change detection via variational Bayesian inference

Y Yang, X Cong, K Long, Y Luo, W Xie, Q Wan - Signal Processing, 2018 - Elsevier
In this paper, we study the problem of interrupted synthetic aperture radar (SAR) imaging
and coherent change detection (CCD) in the setting of gapped collections with missing …

SAR target augmentation and recognition via cross-domain reconstruction

G Dong, Y Song - Pattern Recognition, 2025 - Elsevier
The deep learning-based target recognition methods have achieved great performance in
the preceding works. Large amounts of training data with label were collected to train a deep …

Deep learning for three dimensional SAR imaging from limited viewing angles

N Sugavanam, E Ertin… - 2023 IEEE International …, 2023 - ieeexplore.ieee.org
A synthetic aperture radar (SAR) collects samples of the three-dimensional (3D) spatial
Fourier transform of the scene on a two dimensional conical manifold corresponding to the …

Compressing bistatic SAR target signatures with sparse‐limited persistence scattering models

N Sugavanam, E Ertin… - IET Radar, Sonar & …, 2019 - Wiley Online Library
Here, the authors study the modelling of bistatic synthetic aperture radar (SAR) target
signatures. They focus on building concise models inspired by physical phenomenology that …

Widely distributed radar imaging: unmediated ADMM based approach

A Murtada, R Hu, BSMR Rao… - IEEE Journal of Selected …, 2022 - ieeexplore.ieee.org
This paper presents a novel approach to reconstruct a unique image of an observed scene
via synthetic apertures (SA) generated by employing widely distributed radar sensors. The …

Toward Small-Sample Radar Target Recognition via Scene Reimaging

G Dong, H Liu - IEEE Transactions on Geoscience and Remote …, 2023 - ieeexplore.ieee.org
Target recognition via deep learning has achieved great performances in the preceding
works. Yet this family of method are dependent on large amounts of training data with label …

Polarimetric SAR compressive sensing examples

JA Jackson, F Lee-Elkin - 2018 IEEE Radar Conference …, 2018 - ieeexplore.ieee.org
Previously, we proposed a new compressive sensing (CS) scheme for polarimetric synthetic
aperture radar (SAR) that takes advantage of antenna crosstalk. The proposed framework …