Efficient pulse compression for LPI waveforms based on a nonparametric iterative adaptive approach

2015 ◽  
Author(s):  
Zhengzheng Li ◽  
Ramesh Nepal ◽  
Yan Zhang ◽  
WIlliam Blake
Keyword(s):  
Pulse Compression ◽  
Adaptive Approach ◽  
Iterative Adaptive Approach

Doppler beam sharpening imaging based on fast iterative adaptive approach

2017 ◽  
Author(s):  
Haiguang Yang ◽  
Deqing Mao ◽  
Yongchao Zhang ◽  
Yin Zhang ◽  
Yulin Huang ◽  
...  
Keyword(s):  
Adaptive Approach ◽  
Iterative Adaptive Approach

Super-resolution Doppler beam sharpening imaging based on an iterative adaptive approach

2016 ◽  
Vol 7 (3) ◽  
pp. 259-268 ◽  
Author(s):  
Lijuan Qi ◽  
Mingjie Zheng ◽  
Weidong Yu ◽  
Ning Li ◽  
Lili Hou
Keyword(s):  
Super Resolution ◽  
Adaptive Approach ◽  
Iterative Adaptive Approach

A Regularized Iterative Adaptive Approach Based for Radar Forward-Looking Imaging

2021 ◽  
Author(s):  
Yongwei Zhang ◽  
Jie Li ◽  
Yongchao Zhang ◽  
Fanyun Xu ◽  
Yulin Huang ◽  
...  
Keyword(s):  
Adaptive Approach ◽  
Iterative Adaptive Approach ◽  
Forward Looking

Doppler spectrogram analysis of human gait via iterative adaptive approach

2009 ◽  
Vol 45 (3) ◽  
pp. 186 ◽  
Author(s):  
L. Du ◽  
J. Li ◽  
P. Stoica ◽  
H. Ling ◽  
S.S. Ram
Keyword(s):  
Human Gait ◽  
Adaptive Approach ◽  
Iterative Adaptive Approach

scholarly journals RFI Suppression for SAR Systems Based on Removed Spectrum Iterative Adaptive Approach

2020 ◽  
Vol 12 (21) ◽  
pp. 3520
Author(s):  
Wei Xu ◽  
Weida Xing ◽  
Chonghua Fang ◽  
Pingping Huang ◽  
Weixian Tan ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Signal Detection ◽  
Image Interpretation ◽  
Microwave Frequency ◽  
Simulation Experiments ◽  
Raw Data ◽  
Adaptive Approach ◽  
Spectrum Recovery ◽  
Smoothing Process ◽  
Iterative Adaptive Approach

A synthetic aperture radar (SAR) system can be seriously contaminated by radio frequency systems because of working in the same microwave frequency bands, which would degrade the SAR image quality and affect the accuracy of image interpretation. In this paper, a novel radio frequency interference (RFI) suppression approach including RFI identification, band-stop filtering and a removed spectrum iterative adaptive approach (RSIAA) is proposed. First, the smoothing process is added before RFI signal detection to improve the RFI detection capacity. Afterwards, the band-stop filtering with a broaden factor is proposed to mitigate the residual RFI, and it ensures the accuracy of the following removed spectrum recovery by the RSIAA. Finally, the removed spectrum components are estimated from available adjacent spectrum data by the RSIAA in turn to obtain the desired range spectra. Compared with the conventional range frequency filtering method for RFI suppression, the capacity of the weak RFI signal detection is improved, and the increased sidelobes due to the discontinuous spectra are well suppressed. Simulation experiments on both simulated SAR raw data, Gaofen-3 and Sentinel-1 SAR raw data validate the proposed RFI suppression approach.

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