Results 51 to 60 of about 678 (183)
Remote Sensing with Shipborne High-Frequency Surface-Wave Radar [PDF]
, 2018 High-frequency surface-wave radar (HFSWR) has been successfully applied for moving target detection and remote sensing of ocean surface dynamic parameters for decades.
Ji, Zhenyuan +3 more
core +2 more sources
Introduction to Coastal HF Maritime Surveillance Radars
Polish Maritime Research, 2019 This paper presents the main technical characteristics and working performances of coastal maritime surveillance radars, such as low-power High-Frequency Surface Wave Radars (HFSWR) and Over the Horizon Radars (OTHR). These radars have demonstrated to be
Ilcev Dimov Stojce
doaj +1 more source
Remote Sensing, 2023 A high-frequency surface wave radar (HFSWR) is the only sensor that provides inexpensive surveillance for up to 200 nautical miles (NM) of the exclusive economic zone in the 3–5 MHz band. However, because of its long wavelength, its angular resolution is
Eunhee Kim +4 more
doaj +1 more source
Deghosting method for cross localization in distributed high frequency surface wave radar
The Journal of Engineering, Volume 2024, Issue 11, November 2024.To address the ghosts emerging during the cross localization in a novel distributed high frequency surface wave system, a multi‐stage deghosting method is utilized, which is based on the geometric characteristics, the velocity features, and the motion features of the targets across multiple frames.
Na Cui, Xuekun Chen, Changjun Yu
wiley +1 more source
DOA estimation with extended sparse and parametric approach in multi‐carrier MIMO HFSWR
The Journal of Engineering, Volume 2019, Issue 21, Page 7810-7814, November 2019., 2019 To obtain a higher angle resolution of multiple‐in multiple‐out high‐frequency surface wave radar (MIMO HFSWR) for direction of arrival (DOA) estimation with a limited number of antenna sensors, multiple working frequencies are proposed to enlarge the aperture of the virtual array of the MIMO HFSWR.
Aihua Liu +3 more
wiley +1 more source
Target Detection for HFSWR Based on an S3D Algorithm
IEEE Access, 2020 Because of the influence of clutter and interference, intelligent detection is of great importance for high-frequency surface wave radar (HFSWR) in complex environment.
Ling Zhang +2 more
doaj +1 more source
Array self‐calibration for sky‐wave over‐the‐horizon radar with gain‐phase errors
The Journal of Engineering, Volume 2019, Issue 19, Page 6192-6195, October 2019., 2019 This study proposes a novel algorithm for sky‐wave over‐the‐horizon (OTH) radar array self‐calibration with angle‐independent gain‐phase errors. The proposed method exploits backscattered echo from an ionised meteor trail, which can be considered as disjoint sources of opportunity for their spatial and temporal fluctuations during coherent processing ...
Baiqiang Zhang, Junhao Xie
wiley +1 more source
Density Based Clustering Data Association Procedure for Real–Time HFSWRs Tracking at OTH Distances
IEEE Access, 2020 In order to efficiently cover maritime areas at over the horizon (OTH) distances and thus increase marine safety in a nation's exclusive economic zone (EEZ), a network of maritime sensors built around High Frequency Surface Wave Radars (HFSWR) can be an ...
Nikola Stojkovic +2 more
doaj +1 more source
Remote Sensing, 2023 The problem of accurate source localization has been an area of focus in high-frequency surface wave radar (HFSWR) applications. However, antenna pattern distortion (APD) decreases the direction-of-arrival (DOA) estimation performance of the multiple ...
Hongbo Li +4 more
doaj +1 more source
International Journal of Antennas and Propagation, Volume 2024, Issue 1, 2024.The extraction algorithm of target characteristics resonance set at the high‐frequency band plays a significant role in defense applications like early warning. The paper proposes a new method to extract the characteristic resonance set of radar targets in the resonance frequency region using an autoregressive moving average model optimized by root ...
Sang Zhou +3 more
wiley +1 more source