Results 21 to 30 of about 1,378 (177)
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022 The P-band spaceborne synthetic aperture radar (SAR) is significantly affected by ionospheric scintillation. Although the traditional phase gradient autofocus (PGA) can estimate and compensate for the scintillation phase of the single-polarization SAR ...
Hongcheng Zeng +3 more
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Stationary Time Statistical Property of Ionospheric Clutter in High-Frequency Surface-Wave Radar
Journal of Electrical and Computer Engineering, 2019 In HFSWR (high-frequency surface-wave radar) system, the detection performance is impacted seriously by ionospheric clutter. Frequency selection is an effective method to avoid the effect of ionospheric clutter.
Shang Shang +3 more
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A Comparative Study on Radio Frequency Interference Suppression and foF2 Scaling for Ionograms
Remote Sensing, 2023 In this paper, we compare the performances of radio frequency interference (RFI) suppression between radio frequency interference mitigation (RFIM) and frequency-domain adaptive clutter suppression (FACS) algorithms that apply to ionograms for foF2 ...
Zhao-Yu Chen +6 more
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Time-varying autoregressive (TVAR) models for multiple radar observations [PDF]
, 2007 ©2007 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any ...
Abramovich, Yuri +2 more
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Deep Learning Aided Time–Frequency Analysis Filter Framework for Suppressing Ionosphere Clutter
Remote Sensing, 2022 In a heterogeneous environment, the ionosphere is dynamically changing in the Earth’s middle latitude, and backscatter from fast-moving irregularities in the plasma can cause ionosphere clutter to extend. Suppressing varying ionosphere clutter and exploring obscured targets are challenging tasks for high frequency surface wave radar (HFSWR).
Xiaowei Ji +5 more
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International Journal of Antennas and Propagation, 2013 High Frequency Surface Wave Radar (HFSWR) can perform the functions of ocean environment monitoring, target detection, and target tracking over the horizon. However, its system's performance is always limited by the severe ionospheric clutter environment,
Xin Zhang, Qiang Yang, Weibo Deng
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The Case for Combining a Large Low-Band Very High Frequency Transmitter With Multiple Receiving Arrays for Geospace Research: A Geospace Radar [PDF]
, 2019 We argue that combining a high‐power, large‐aperture radar transmitter with several large‐aperture receiving arrays to make a geospace radar—a radar capable of probing near‐Earth space from the upper troposphere through to the solar corona—would ...
Chau, JL +5 more
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IET Radar, Sonar & Navigation, 2023 Small‐array high‐frequency surface wave radar (HFSWR) is widely used to monitor maritime targets as it can be used to save on‐land resources. In small‐array HFSWR systems, the main lobe of the receiving angle spectrum is significantly broadened.
Jiaming Li, Qiang Yang, Xin Zhang
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Quality Control for Ocean Current Measurement Using High-Frequency Direction-Finding Radar
Remote Sensing, 2023 High-frequency radars (HFRs) are important for remote sensing of the marine environment due to their ability to provide real-time, wide-coverage, and high-resolution measurements of the ocean surface current, wave height, and wind speed.
Shuqin He +6 more
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An Ionospheric Es Layer Clutter Model and Suppression in HF Surfacewave Radar
International Journal of Antennas and Propagation, 2013 This paper based on a fast implemented multiphase screen method using DFT puts forward an ionospheric Es layer clutter model and uses the newly developed dimensionality reduction space-time adaptive processing- (STAP-) JDL algorithm to suppress Es layer ...
Yajun Li +4 more
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