Curved synthetic aperture radar for near-field terahertz imaging

M Gezimati, G Singh - IEEE Photonics Journal, 2023 - ieeexplore.ieee.org
High resolution imaging techniques will play an essential role in the future smart imaging
applications to provide potential solutions for accurate detection, monitoring and …

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 …

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 …

MrSARP: A hierarchical deep generative prior for SAR image super-resolution

T Agarwal, N Sugavanam, E Ertin - 2023 IEEE Radar …, 2023 - ieeexplore.ieee.org
Generative models learned from training using deep learning methods can be used as
priors in under-determined inverse problems, including imaging from sparse set of …

[HTML][HTML] Multi-circular SAR three-dimensional image formation via group sparsity in adjacent sub-apertures

W Yang, D Zhu - Remote Sensing, 2022 - mdpi.com
Multi-circular SAR (MCSAR) can obtain holographic three-dimensional (3D) images of
interesting observation targets, which is a significant research field at present. For …

Complex-valued deep-learning model for 3D SAR modeling and image generation

N Sugavanam, E Ertin - 2023 57th Asilomar Conference on …, 2023 - ieeexplore.ieee.org
Synthetic aperture radar (SAR) collects samples of the 3D Spatial Fourier transform on a two-
dimensional manifold corresponding to the backscatter data of wideband pulses launched …

Neural Implicit representations for 3D scene modeling and visualization using multipass SAR

N Sugavanam, E Ertin… - EUSAR 2024; 15th …, 2024 - ieeexplore.ieee.org
Synthetic aperture radar (SAR) collects samples of the 3D Spatial Fourier transform on a two-
dimensional surfaces corresponding to the backscatter data of wideband pulses launched …

Toward Internal Ice-Sheet Temperature Retrieval Using Microwave Radiometry and Simplified Ice-Flow Models

N Sugavanam, E Ertin, C Yardim… - IGARSS 2023-2023 …, 2023 - ieeexplore.ieee.org
Ice sheets are fundamental components of the Earth's system that impact the climate through
their contribution to global sea level. Knowledge of an ice sheet's internal temperature is …

Modeling frequency dependent scattering models for SAR Image Spectrum Extrapolation

N Sugavanam, E Ertin - 2023 IEEE Radar Conference …, 2023 - ieeexplore.ieee.org
The wavelength used for illumination dictates the scale of the mechanisms that interact with
the incident electromagnetic (EM) energy. We model the synthetic Aperture Radar Image of …

Research on Algorithm of Near-field 3D SAR Imaging Based on Linear Array

R Zhang, Z Zheng, X Chen… - 2022 7th International …, 2022 - ieeexplore.ieee.org
Collecting data in the near-field area of the radar using the spotlight mode based on the
linear array platform, and the three-dimensional imaging algorithm of the target within the …