Unambiguous reconstruction and imaging of nonuniform sampling SAR signals

L Guangyan, L Youquan - 2007 1st Asian and Pacific …, 2007 - ieeexplore.ieee.org
Nonuniform sample of SAR signal will bring the noise into the signals, and thus mix the
spectrum of the echo signals with that of the noises, increase ambiguity of the signals, and …

Out-of-band ambiguity analysis of nonuniformly sampled SAR signals

Z Zhu, Z Zhang, R Wang, L Guo - IEEE Geoscience and Remote …, 2014 - ieeexplore.ieee.org
High-resolution and wide-swath synthetic aperture radar (SAR) images can be obtained by
multichannel sampling. However, a nonoptimum pulse-repetition frequency is associated …

Investigation of azimuth multichannel reconstruction for moving targets in high resolution wide swath SAR

W Tan, W Xu, P Huang, Z Huang, Y Qi, K Han - Sensors, 2017 - mdpi.com
The azimuth multichannel imaging scheme with the large receive antenna divided into
multiple sub-apertures usually leads to azimuth non-uniform sampling, and echoes from all …

SAR signal reconstruction from multi-channel non-uniform sampling near singular points

L Guo, R Wang, Y Deng, M Wang, X Luo - Remote sensing letters, 2015 - Taylor & Francis
The technique of multiple apertures in azimuth enables a wide swath synthetic aperture
radar (SAR) with a high azimuth resolution. In a traditional multi-channel SAR system, if the …

Azimuth ambiguity of multi-channel SAR

X Ma, Z Sun, Z Dong, H Huang - 2012 IEEE International …, 2012 - ieeexplore.ieee.org
Azimuth multi-channel synthetic aperture radar has been widely studied to realize high
resolution wide swath imaging. Spectrum reconstruction algorithm deals with the main-lobe …

Unambiguous imaging of static scenes and moving targets with the first Chinese dual-channel spaceborne SAR sensor

T Jin, X Qiu, D Hu, C Ding - Sensors, 2017 - mdpi.com
Multichannel synthetic aperture radar (SAR) is a breakthrough given the inherent limitation
between high-resolution and wide-swath (HRWS) faced with conventional SAR. This paper …

Study on time domain reconstruction from non-uniform azimuth sampling in SAR signal

Y Jiang, C Li, X Wu - 2007 1st Asian and Pacific Conference on …, 2007 - ieeexplore.ieee.org
Wide-swath and high-resolution impose contradicting requirements on synthetic aperture
radar (SAR) system design and parameters choice. To solve non-uniform sampling in the …

Unambiguous reconstruction for multichannel nonuniform sampling SAR signal based on image fusion

L Zhou, X Zhang, Y Wang, L Li, L Pu, J Shi… - IEEE Access, 2020 - ieeexplore.ieee.org
Multichannel signal processing in azimuth is a vital technique to enable a wide-swath
Synthetic Aperture Radar (SAR) with high azimuth resolution. However, the multichannel …

Improved signal reconstruction algorithm for multichannel SAR based on the Doppler spectrum estimation

SS Zuo, M Xing, XG Xia, GC Sun - IEEE Journal of Selected …, 2016 - ieeexplore.ieee.org
For high-resolution wide-swath synthetic aperture radar imaging algorithms, signal
reconstruction is a key step. The steering vector plays an important role in signal …

A High-Resolution, Wide-Swath SAR Imaging System Based on Tandem SAR Satellites

L Sun, C Li - Sensors, 2022 - mdpi.com
For the spaceborne synthetic aperture radar (SAR), it is difficult to obtain high resolution and
wide width at the same time. This paper proposes a novel imaging system based on tandem …