Results 11 to 20 of about 279 (160)
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
IET Radar, Sonar & Navigation, 2023 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.
Ya‐Jun Li +5 more
doaj +2 more sources
Ground clutter cancellation in incoherent radars: solutions for EISCAT Svalbard radar [PDF]
Annales Geophysicae, 2000 Incoherent scatter radars measure ionosphere parameters using modified Thomson scatter from free electrons in the target (see e.g. Hagfors, 1997). The integrated cross section of the ionospheric scatterers is extremely small and the measurements can ...
T. Turunen +2 more
doaj +2 more sources
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 +6 more
doaj +2 more sources
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 +4 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 +3 more
doaj +2 more sources
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
doaj +2 more sources
New BSS‐based ABF for heterogeneous ionospheric clutter mitigation in HFSWR [PDF]
IET Radar, Sonar and Navigation, 2019 Ionospheric clutter is detrimental to target detection in high‐frequency surface‐wave radar (HFSWR). Adaptive beamforming (ABF) has been adopted to suppress the ionospheric clutter in recent years. Unfortunately, the performance of ABF degrades due to the heterogeneity of the ionospheric clutter.
Yueyu Guo, Yinsheng Wei, Rongqing Xu
exaly +2 more sources
Measurement of the Ionospheric Scintillation Parameter $C_{k}L$ From SAR Images of Clutter [PDF]
IEEE Transactions on Geoscience and Remote Sensing, 2017 Space-based synthetic aperture radar (SAR) can be affected by the ionosphere, particularly at L-band and below. A technique is described that exploits the reduction in SAR image contrast to measure the strength of ionospheric turbulence parameter ${C}_{k}{L}$ .
David P. Belcher +2 more
openaire +2 more sources
Modeling and Simulation Challenges in Wide Ocean Area Surveillance
IEEE Access, 2019 Wide ocean area surveillance using high frequency surface wave radar(s) is discussed in this paper. Theoretical and practical issues and problems are reviewed.
Levent Sevgi
doaj +2 more sources