System Design and Signal Processing in Spaceborne Squint Sliding Spotlight SAR with Sub-Aperture Block-Varying PRF

W Xu, Z Zhang, P Huang, W Tan, Y Qi - Electronics, 2023 - mdpi.com
To tackle the problems of Doppler spectrum, aliasing caused by azimuth beam scanning
and azimuthal serious non-uniform sampling in squint sliding spotlight synthetic aperture …

Azimuth Preprocessing of Squinted Sliding Spotlight Synthetic Aperture Radar Data with Block Varying PRF

Z Zhang, W Xu, P Huang, W Tan… - 2021 Photonics & …, 2021 - ieeexplore.ieee.org
The squinted sliding spotlight synthetic aperture radar (SAR) based on the fixed pulse
repetition frequency (PRF) and continuously varying PRF will lead to the problems of blind …

Azimuth full-aperture processing of spaceborne squint SAR data with block varying PRF

Z Zhang, W Xu, P Huang, W Tan, Z Gao, Y Qi - Sensors, 2022 - mdpi.com
The block varying pulse repetition frequency (BV-PRF) scheme applied to spaceborne
squint sliding-spotlight synthetic aperture radar (SAR) can resolve large-range cell migration …

Block varying PRI design for high squint sliding-spotlight synthetic aperture radar

Y Zhang, P Huang, W Xu, W Tan… - 2019 Photonics & …, 2019 - ieeexplore.ieee.org
The squint sliding spotlight synthetic aperture radar (SAR) will bring about an exponentially
increased range cell migration (RCM), which could lead to a conflict between the receive …

[HTML][HTML] An improved imaging algorithm for spaceborne MAPs sliding spotlight SAR with high-resolution wide-swath capability

H Kuang, J Chen, W Yang, W Liu - Chinese Journal of Aeronautics, 2015 - Elsevier
Conventional synthetic aperture radar (SAR) systems cannot achieve both high-resolution
and wide-swath imaging simultaneously. This problem can be mitigated by employing …

A novel imaging algorithm for focusing high-resolution spaceborne SAR data in squinted sliding-spotlight mode

J Chen, H Kuang, W Yang, W Liu… - IEEE Geoscience and …, 2016 - ieeexplore.ieee.org
To process squinted sliding-spotlight synthetic aperture radar data, the azimuth
preprocessing step based on the linear range walk correction (LRWC) and derotation …

Extended wavenumber domain algorithm for highly squinted sliding spotlight SAR data processing

D Guo, H Xu, J Li - Progress In Electromagnetics Research, 2011 - jpier.org
Image formation from squinted sliding spotlight synthetic aperture radar (SAR) is limited by
azimuth spectral folding and severe two dimension coupling. This paper presents an …

An Improved Imaging Algorithm for High Resolution Spaceborne Squinted Sliding Spotlight SAR

H Kuang, Z Wang, Z Lu, Y Zhu, Y Liu… - 2019 6th Asia-Pacific …, 2019 - ieeexplore.ieee.org
An improved imaging algorithm is proposed for processing high resolution spaceborne
squinted sliding spotlight SAR data in this paper, which includes four steps, namely, azimuth …

A novel spaceborne sliding spotlight range sweep synthetic aperture radar: System and imaging

Y Wang, J Li, J Yang, B Sun - Remote Sensing, 2017 - mdpi.com
In this paper, a new Spaceborne Sliding Spotlight Range Sweep Synthetic Aperture Radar
(SSS-RSSAR) is proposed to generate a high-resolution image of a Region of Interest (ROI) …

Sequence design for high squint spotlight SAR imaging on manoeuvring descending trajectory

L Yachao, D Huan, Q Yinghui… - IET Radar, Sonar & …, 2017 - Wiley Online Library
Owing to the special geometry and system deviations of missile‐borne spotlight SAR with
manoeuvring motion, the sequence designed with traditional methods used in airborne and …