An efficient algorithm based on CSA for THz stepped-frequency SAR imaging

C Wang, Q Zhang, J Hu, C Li, S Shi… - IEEE Geoscience and …, 2020 - ieeexplore.ieee.org
An efficient algorithm based on chirp scaling algorithm (CSA) for terahertz (THz) stepped-
frequency (SF) synthetic aperture radar (SAR) imaging is proposed in this letter. We call this …

An efficient algorithm based on frequency scaling for THz stepped-frequency SAR imaging

C Wang, Q Zhang, J Hu, S Shi, C Li… - … on Geoscience and …, 2022 - ieeexplore.ieee.org
An efficient algorithm based on the frequency scaling algorithm (FSA) for terahertz (THz)
stepped-frequency (SF) synthetic aperture radar (SAR) imaging is proposed in this article …

Improved stepped-frequency SAR imaging algorithm with the range spectral-length extension strategy

T Zeng, L Liu, Z Ding - IEEE Journal of Selected Topics in …, 2012 - ieeexplore.ieee.org
In order to achieve a high range resolution and low instantaneous bandwidth, stepped
frequency synthetic aperture radar (SAR) is widely used with stepped-frequency chirps and …

An Improved Ultra-high-resolution Stepped-frequency Spaceborne SAR Imaging Algorithm

Z Li, Z Ding, T Zhang, L Li, H Li… - IEEE Journal of …, 2024 - ieeexplore.ieee.org
Frequency stepping is a widely used technique for ultrahigh-resolution synthetic aperture
radar (SAR). Although reducing the burden of hardware, this technique increases the …

Spaceborne high-resolution stepped-frequency SAR imaging technology

L Teng, D Zegang, X Feng, W Yan, LI Zhe - 雷达学报, 2019 - radars.ac.cn
Abstract Spaceborne Synthetic Aperture Radar (SAR) is a type of microwave imaging radar
with 2D high resolution. This technological device achieves range high resolution by …

A Novel Two-Dimensional Autofocusing Algorithm for Real Airborne Stripmap Terahertz Synthetic Aperture Radar Imaging

Y Li, J Wu, Q Mao, H Xiao, F Meng… - IEEE Geoscience and …, 2023 - ieeexplore.ieee.org
In practical applications, airborne terahertz synthetic aperture radar (THz-SAR) echo signal
is not only affected by range amplitude and phase errors introduced by nonideal THz device …

Experimental verification of stepped frequency continuous wave ground-based SAR

Z Ding, Y Wang, W Tan, W Hong - 2013 - IET
GBSAR (Ground-Based Synthetic Aperture Radar) is an effective supplement to Space-
borne SAR and Air-borne SAR, as well as an experimental platform for deformation …

One-bit SAR imaging based on single-frequency thresholds

B Zhao, L Huang, W Bao - IEEE Transactions on Geoscience …, 2019 - ieeexplore.ieee.org
This paper addresses a novel SAR imaging scheme based on 1-bit sampling assisted with a
single-frequency threshold. The 1-bit sampling approach is able to considerably reduce the …

Autofocusing of THz SAR Images by Integrating Compressed Sensing into the Backprojection Process

Y Ivanenko, VT Vu, MI Pettersson - 2023 IEEE Radar …, 2023 - ieeexplore.ieee.org
The THz frequency spectrum provides an opportunity to explore high-resolution synthetic-
aperture-radar (SAR) short-range imaging that can be used for various applications …

[HTML][HTML] An Efficient Spectrum Reconstruction Algorithm for Non-Uniformly Sampled Signals and Its Application in Terahertz SAR

G Zhang, C Li, Z Wang, J Hu, S Zheng, X Liu, G Fang - Remote Sensing, 2023 - mdpi.com
An efficient spectrum reconstruction algorithm based on the Tikhonov regularization for
terahertz (THz) synthetic aperture radar (SAR) azimuth non-uniform sampling is proposed in …