Results 101 to 110 of about 531 (148)
Target Detection for HFSWR Using HFR-YOLO
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingShucheng Wang +5 more
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Improving the Azimuthal Resolution of HFSWR With Multiplicative Beamforming
IEEE Geoscience and Remote Sensing Letters, 2012 The use of multiplicative beamforming is described to improve the azimuthal resolution of existing high-frequency surface-wave radar (HFSWR). An existing method by Davies and Ward is used to improve the resolution by a factor of more than two for HFSWR with 16 antennas.
Régis Guinvarc'h +3 more
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Chaotic Properties of Gravity Waves during Typhoons Observed by HFSWR
Remote Sensing, 2023 The gravity wave produced by typhoons has been an essential subject of study that concerns numerous researchers. The damage to human beings and infrastructure in coastal regions caused by typhoon disasters annually is very severe, and analyzing gravity ...
Changjun Yu, Hongjuan Yang, Lyu Zhe
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A Knowledge-Based Auxiliary Channel STAP for Target Detection in Shipborne HFSWR
Remote Sensing, 2021 The broadened first-order sea clutter in shipborne high frequency surface wave radar (HFSWR), which will mask the targets with low radial velocity, is a kind of classical space–time coupled clutter.
Lei Ye, Liang Guo, Xin Zhang
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DOA Estimation for HFSWR Target Based on PSO-ELM
IEEE Geoscience and Remote Sensing Letters, 2022High-frequency surface wave radar (HFSWR) plays an important role in vessel target surveillance. However, HFSWR's inaccuracy of azimuth estimation caused by wide beams severely limits its detection ability. To solve this problem, a novel direction of arrival (DOA) estimation method based on extreme learning machine optimized by particle swarm ...
Ling Zhang 0003 +4 more
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2015 16th International Radar Symposium (IRS), 2015
In this paper, we explore the possibility of track retrodiction to improve the track performance. To make use of the extra multi-frame data, we borrow the Rauch-Tung-Striebel (RTS) algorithm for the track retrodiction purpose. Using a converted extended Kalman filter (CMEKF) as the baseline, its retrodicted version, namely the retrodicted CMEKF, shows ...
Zhen Ding, Peter Moo
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In this paper, we explore the possibility of track retrodiction to improve the track performance. To make use of the extra multi-frame data, we borrow the Rauch-Tung-Striebel (RTS) algorithm for the track retrodiction purpose. Using a converted extended Kalman filter (CMEKF) as the baseline, its retrodicted version, namely the retrodicted CMEKF, shows ...
Zhen Ding, Peter Moo
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Ionospheric Interference Suppression in HFSWR
2006 1ST IEEE Conference on Industrial Electronics and Applications, 2006Over the past two decades, significant advances have been made in the use of high frequency surface wave radar (HFSWR) for remote sensing in an ocean environment. As one of the main outside interference, ionospheric interference may badly affect radar's performance.
Huang. Liang, Wen. Biyang, Yao Min
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Extraction of ionospheric clutter in HFSWR
2010 The 2nd International Conference on Industrial Mechatronics and Automation, 2010The two main applications of High frequency surface wave radar (HFSWR) are maritime surveillance of the Exclusive Economic Zone (EEZ) and the remote sensing of the sea. Ionospheric clutter strongly limits the detection capabilities of HFSWR. In order to analyze the effect of ionospheric clutter, a method based on image processing is proposed to extract
Shang Shang, Ning Zhang, Yang Li
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Design of an IMM-NNJPDA tracker for HFSWR
2016 17th International Radar Symposium (IRS), 2016In this paper, an IMM-NNJPDA tracker was evaluated to test its capability of handling sharp turn motions for ships. With the flexibility of disabling one of the two models, two additional trackers are available: a Constant Velocity (CV) model NNJPDA (CV-NNJPDA) tracker and a Singer model NNJPDA (Singer-NNJPDA) tracker. All three trackers were evaluated
Zhen Ding, Peter Moo
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DFCW-LFM analysis for MIMO HFSWR
2016 CIE International Conference on Radar (RADAR), 2016Recently, discrete frequency coding waveform with linear frequency modulation (DFCW-LFM) has been proved to have good autocorrelation sidelobe peak and cross ambiguity peak. This paper derives the multiple-input multiple-output (MIMO) radar ambiguity function (AF) of DFCW-LFM.
Changjun Yu +4 more
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