Results 11 to 20 of about 67,451 (128)

Space-polarization Collaborative Suppression Method for Ionospheric Clutter in HFSWR

Leida xuebao, 2016
High Frequency Surface Wave Radar (HFSWR) is able to receive surface target and low-flying aircraft echoes at a long-distance, but it suffers severely from ionospheric clutter.
Yang Yunlong, Mao Xingpeng, Dong Yingning, Deng Weibo   +3 more
doaj   +2 more sources

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, Kangning He, Zhaobin Wang, Xuguang Yang   +3 more
doaj   +2 more sources

Weak Target Detection within the Nonhomogeneous Ionospheric Clutter Background of HFSWR Based on STAP [PDF]

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
doaj   +2 more sources

An Ionospheric Es Layer Clutter Model and Suppression in HF Surfacewave Radar [PDF]

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, Yinsheng Wei, Rongqing Xu, Zhuoqun Wang, Tianqi Chu   +4 more
doaj   +2 more sources

Spread Sea Clutter Suppression in HF Hybrid Sky-Surface Wave Radars Based on General Parameterized Time-Frequency Analysis

International Journal of Antennas and Propagation, 2020
In high-frequency (HF) hybrid sky-surface wave radar, the first-order sea clutter broadening is severe under the action of ionospheric phase disturbance and bistatic angles. In this paper, a cascaded method is described to suppress the spread sea clutter.
Zhuo-qun Wang, Ya-jun Li, Jun-nan Shi, Peng-fei Wang, Ai-hua Liu, Xin-fan Xia, De-hong Chen   +6 more
doaj   +2 more sources

Ionospheric Clutter Model for HF Sky-Wave Path Propagation with an FMCW Source

International Journal of Antennas and Propagation, 2019
A theoretical model of the sky-wave path propagation with frequency modulated continuous wave (FMCW) source for high frequency (HF) radar is proposed in this paper.
Xuguang Yang, Aijun Liu, Changjun Yu, Linwei Wang   +3 more
doaj   +2 more sources

Space-Time Adaptive Processing Clutter Suppression Algorithm Based on Spatiotemporal Stationarity of Ionospheric Clutter in HFSWR

International Journal of Antennas and Propagation
In high-frequency surface wave radar (HFSWR) systems, ionospheric clutter is a common phenomenon that often causes targets to be submerged. Space-time adaptive processing (STAP) is a classical adaptive filtering algorithm.
Ruilong Ren, Weibo Deng, Fulin Su, Xin Zhang   +3 more
doaj   +2 more sources

Spreading Sea Clutter Suppression for High-Frequency Hybrid Sky-Surface Wave Radar Using Orthogonal Projection in Spatial–Temporal Domain

Remote Sensing
In recent years, the high-frequency hybrid sky-surface wave radar (HSSWR) has been increasingly used for target detection applications. Nevertheless, the specific bistatic system layout and the phase path disturbances induced by the ionospheric ...
Qing Zhou, Yufan Bai, Xiaohua Zhu, Xiongbin Wu, Hong Hong, Chuanwei Ding, Heng Zhao   +6 more
doaj   +2 more sources

Signal Processing Methods to Improve Ocean Surface Wave Estimation from a High Frequency Surface Wave Radar [PDF]

, 2011
High frequency surface wave radars are operated as a remote sensor to measure ocean surface parameters to ranges exceeding 200-300 km from the coastline.
Wang, Wei
core   +6 more sources

Space-Time Adaptive Processing Clutter-Suppression Algorithm Based on Beam Reshaping for High-Frequency Surface Wave Radar

Remote Sensing, 2022
In high-frequency surface wave radar (HFSWR) systems, clutter is a common phenomenon that causes objects to be submerged. Space-time adaptive processing (STAP), which uses two-dimensional data to increase the degrees of freedom, has recently become a ...
Jiaming Li, Qiang Yang, Xin Zhang, Xiaowei Ji, Dezhu Xiao   +4 more
doaj   +1 more source