Results 11 to 20 of about 1,378 (177)
Prediction method for ionospheric clutter suppression for HFSWR
Electronics Letters, 2019 The detection performance of high‐frequency surface wave radar (HFSWR) is significantly impacted by ionospheric clutter and sea clutter. In order to suppress the ionospheric clutter, a new method based on the largest Lyapunov exponent prediction algorithm is proposed in this Letter.
Lyu Zhe, Yu ChangJun, Liu AiJun
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IEEE Access, 2020 For high-frequency surface wave radar (HFSWR), the unwanted radio wave originated from the ionosphere is commonly called ionospheric clutter. Its presence seriously affects the performance of the HFSWR and extremely degrades the radar capability to ...
Yunlong Yang +3 more
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New BSS‐based ABF for heterogeneous ionospheric clutter mitigation in HFSWR [PDF]
IET Radar, Sonar & 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 +3 more
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Statistical Analysis of Performance of Optimisation‐Based SAR Autofocus
IET Radar, Sonar & NavigationTransionospheric SAR autofocus is a variational algorithm designed to circumvent the deficiencies of conventional autofocus techniques in correcting the distortions of spaceborne SAR images due to ionospheric turbulence.
Patrick Haughey +2 more
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IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020 Ionospheric clutter is a major factor affecting the performance of high-frequency surface wave radar (HFSWR). Previous studies have been mainly focused on the development of ionospheric clutter suppression methods involving delicate signal processing ...
Xuguang Yang +3 more
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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
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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
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A Network of Portable, Low-Cost, X-Band Radars [PDF]
, 2012 Radar is a unique tool to get an overview on the weather situation, given its high spatio- temporal resolution. Over 60 years, researchers have been investigating ways for obtaining the best use of radar.
Allegretti, Marco +7 more
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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
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IET Radar, Sonar & Navigation, 2023 A great interest has been directed towards high frequency surface wave radar (HFSWR), because it is applied as long‐range early warning and real‐time measurements of sea surface condition tools in maritime surveillance.
Xiaowei Ji +3 more
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