Analysis of first-order sea clutter spectrum characteristics for HF sky-surface wave radar

Li, Yajun; Yan, Wei

doi:10.1109/radar.2013.6652015

Cited by 11 publications

(18 citation statements)

References 2 publications

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“…Considering the hybrid system radar's geometrical relation and configuration, we have the incident angle Δ i = α and the reflection angle Δ s = 0. Known from the theory of hydraulics, for gravity wave, its v p and its wavelength has the following relation [10] v p = gL/2p (8) Thus, the first-order sea clutter Bragg frequency for HF sky-surface wave radar can be derived…”

Section: Characteristics Of Frequency Shift Of First-order Sea Cluttermentioning

confidence: 99%

“…At present, little amount of work has been done on this new radar type, and related theoretical research is preliminary [1][2][3][4][5][6][7][8]. In 2007 and 2008, Riddolls discussed the experimental configuration and the detection performance against ship targets in this radar system [1,2].…”

Section: Introductionmentioning

confidence: 99%

“…In 2011, the detection performance of a hybrid sky-surface wave propagation mode based on Digital Radio Mondiale digital amplitude modulation broadcasting was analysed by Zhao and Wan [7]. Harbin Institute of Technology carried out a newly-developed integrated sky-surface wave experimental system in recent years to verify the feasibility of this radar system [4,8]. Fig.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, in order to effectively detect a ship target, we require to deeply study the characteristics of sea clutter. In [8], we preliminarily analysed the characteristics of first-order sea clutter spectrum for this new system radar. However, unlike the previous conference paper [8], this new paper is an extension and further research of the previous one in detail, and we added some new research contents.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Research on characteristics of first‐order sea clutter for high‐frequency sky–surface wave radar

Wang

Shao

et al. 2016

IET Microwaves, Antennas & Propagation

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In high‐frequency (HF) hybrid sky–surface wave radar, the first‐order sea clutter broadening is severe under the influence of the ionosphere and bistatic angle. This affects the detection of ship targets. Thereby a comprehensive analysis is essential and will be presented in this study. First, according to the geometry configuration and detection characteristics of this new system radar, the positioning principle and the range of grazing angle are analysed. Then, the first‐order sea clutter Bragg frequency is presented and broadening model is given on the basis of the system configuration. Next, the mechanism of first‐order sea clutter frequency shift and broadening is explained and, based on the system layout, simulation is provided to illustrate the effects of various factors on first‐order sea clutter, including ionosphere, grazing angle and bistatic angle. Moreover, the characteristics of sea clutter frequency shift and broadening in different range and azimuth are analysed. Finally, the results of theoretical analysis are compared with the experimental data based on the newly‐developed integrated experimental system, and the dominant factor of sea clutter broadening is studied. Simulation results show that the results of experiment are consistent with that of theoretical analysis.

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Section: Characteristics Of Frequency Shift Of First-order Sea Cluttermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Research on characteristics of first‐order sea clutter for high‐frequency sky–surface wave radar

Wang

Shao

et al. 2016

IET Microwaves, Antennas & Propagation

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show abstract

“…Since the receivers are close to the target, the target echo is relatively stronger which can improve the detection probability. Researchers in Wuhan University try to use the broadcast signal DRM to realize the target detection in the hybrid mode [5]. As a new radar system, only the sea clutter characteristics, the ionospheric influence on the resolution, and the time availability and the asynchronous filtering are mentioned in papers [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Study on the Detectability of the Sky-Surface Wave Hybrid Radar

Hou

Guo

Shi

et al. 2014

Journal of Applied Mathematics

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Working in the HF (high-frequency) band and the transmitter and receiver locating separately, the sky-surface wave hybrid radar both has the capabilities of the OTHR (over-the-horizon radar) and the advantage of the bistatic radar. As the electromagnetic wave will be disturbed by the ionosphere, interfered by the sea clutter and attenuated by the sea surface, the detectability of this radar system is more complex. So, in this paper, we will discuss the problem detailedly. First of all, the radar equation is deduced based on the propagation of the electromagnetic wave. Then, how to calculate the effect of the ionosphere and the propagation loss is discussed. And an example based on the radar equation is given. At last, the ambiguity function is used to analyze the range and velocity resolution. From the result, we find that the resolution has relation with the location of the target and the height of reflection point of the ionosphere. But compared with the location, the effect of the ionospheric height can be ignored.

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Analysis and simulation for broadening first‐order sea clutter spectrum in high frequency hybrid sky‐surface wave propagation mode

Yan

Zhu

et al. 2015

IET Radar, Sonar & Navigation

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Analysis of first-order sea clutter spectrum characteristics for HF sky-surface wave radar

Cited by 11 publications

References 2 publications

Research on characteristics of first‐order sea clutter for high‐frequency sky–surface wave radar

Research on characteristics of first‐order sea clutter for high‐frequency sky–surface wave radar

Study on the Detectability of the Sky-Surface Wave Hybrid Radar

Analysis and simulation for broadening first‐order sea clutter spectrum in high frequency hybrid sky‐surface wave propagation mode

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