Focusing wide bandwidth and wide swath synthetic aperture sonar data using modified nonlinear chirp-scaling imaging algorithm

2014 ◽  
Author(s):  
Zhen Tian ◽  
He-Ping Zhong ◽  
Jin-Song Tang
Keyword(s):  
Synthetic Aperture ◽  
Wide Bandwidth ◽  
Imaging Algorithm ◽  
Synthetic Aperture Sonar ◽  
Wide Swath

scholarly journals An Improved Full-Aperture ScanSAR Imaging Method Integrating the MIAA Based Aperture Interpolation

2020 ◽  
Vol 2020 ◽  
pp. 1-15
Author(s):  
Jiaqi Ning ◽  
Dacheng Liu ◽  
Kaiyu Liu ◽  
Heng Zhang ◽  
Yingjie Wang
Keyword(s):  
Missing Data ◽  
Target Detection ◽  
High Precision ◽  
Synthetic Aperture ◽  
Imaging Method ◽  
Imaging Algorithm ◽  
Radar Antenna ◽  
Azimuth Resolution ◽  
Iterative Adaptive Approach ◽  
Wide Swath

In the scanning synthetic aperture radar (ScanSAR) mode, the radar antenna sweeps through different range subswaths to image a wide swath. The full-aperture imaging algorithm for ScanSAR data has been widely used because it can be realized by exploiting the existing standard high-precision Stripmap SAR processor and does not require stitch processing in the azimuth. However, both the focused image and the interferogram achieved by full-aperture processing suffer from spikes. The spikes adversely affect the ScanSAR-related applications, such as target detection and interferometry. To effectively suppress the spikes, an improved algorithm based on the missing-data iterative adaptive approach (MIAA) is proposed in this manuscript. Besides, the proposed method can also improve the azimuth resolution of ScanSAR images. Simulation and experimental results demonstrate that this algorithm has better performance when processing ScanSAR data compared with existing methods.

Accelerating range Doppler imaging algorithm for multiple-receiver synthetic aperture sonar on multi-core-based architectures

2019 ◽  
Vol 24 (13) ◽  
pp. 9777-9788
Author(s):  
Zhong Heping ◽  
Tang Jinsong ◽  
Tian Zhen ◽  
Wu Haoran ◽  
Ma Mengbo
Keyword(s):  
Doppler Imaging ◽  
Synthetic Aperture ◽  
Imaging Algorithm ◽  
Synthetic Aperture Sonar ◽  
Multiple Receiver
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