An integrated maritime surveillance system based on high-frequency surface-wave radars. 1. Theoretical background and numerical simulations

Sevgi, Levent; Ponsford, A.M.; Chan, Hing C.

doi:10.1109/74.951557

Cited by 132 publications

(65 citation statements)

References 16 publications

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“…Thus the radiation in the axial direction is inevitable. Figures 3 and 4 show sketch maps of the vertically polarized transmitting and receiving antenna arrays (and the ground screen), respectively [Sevgi, 2001]. Figure 5 shows the vertical radiation patterns of a vertically polarized transmitting antenna [Sevgi, 2001], which is on an ideal and nonideal conductive plane.…”

Section: Problemsmentioning

confidence: 99%

“…Figures 3 and 4 show sketch maps of the vertically polarized transmitting and receiving antenna arrays (and the ground screen), respectively [Sevgi, 2001]. Figure 5 shows the vertical radiation patterns of a vertically polarized transmitting antenna [Sevgi, 2001], which is on an ideal and nonideal conductive plane. Figure 6 shows the vertical radiation patterns of a vertically polarized receiving antenna array [Sevgi, 2001], also on ideal and nonideal conductive planes.…”

Section: Problemsmentioning

confidence: 99%

“…Figure 5 shows the vertical radiation patterns of a vertically polarized transmitting antenna [Sevgi, 2001], which is on an ideal and nonideal conductive plane. Figure 6 shows the vertical radiation patterns of a vertically polarized receiving antenna array [Sevgi, 2001], also on ideal and nonideal conductive planes. (The electrical parameters for the poor ground were s = 0.003 W À1 m À1 and e r = 4 and the parameters for the sea were s = 5 W À1 m À1 and e r = 80 [Sevgi, 2001].)…”

Section: Problemsmentioning

confidence: 99%

“…Figure 6 shows the vertical radiation patterns of a vertically polarized receiving antenna array [Sevgi, 2001], also on ideal and nonideal conductive planes. (The electrical parameters for the poor ground were s = 0.003 W À1 m À1 and e r = 4 and the parameters for the sea were s = 5 W À1 m À1 and e r = 80 [Sevgi, 2001].) In practical radar engineering, the installation field of the antenna array cannot be built to an ideal boundless conductive plane, so there must be electromagnetic radiation in the axial direction.…”

Section: Problemsmentioning

confidence: 99%

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Ionospheric effect of HF surface wave over‐the‐horizon radar

Gao

et al. 2006

Radio Science

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[1] The use of HF surface wave radar as an effective method for inspecting the environment of the ocean in the beyond-the-horizon area has been developing in recent years. However, because the radiating beam of the transmitting antenna is of a certain width and its electromagnetic radiating power propagates not only along the sea surface but also to the upper space, as a result, after interacting with the ionosphere or a scattering object on its path, the backscattered signal then returns to the radar along the radiative path. Thus, if we analyze the echo signal received by the radar, we can obtain some information about the ionosphere. This paper presents a method of sensing the ionosphere using HF ground wave radar, which can give information about the altitude of the ionosphere, Doppler, meteor showers, etc.

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Section: Problemsmentioning

confidence: 99%

Section: Problemsmentioning

confidence: 99%

Section: Problemsmentioning

confidence: 99%

Section: Problemsmentioning

confidence: 99%

See 2 more Smart Citations

Ionospheric effect of HF surface wave over‐the‐horizon radar

Gao

et al. 2006

Radio Science

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“…Other solutions like satellites are too expensive and cannot guarantee a constant control nor a high resolution. The optimum solution is the so called Surface Wave Radar: operating at HF frequencies, this land based radar utilizes surface wave propagation and is not affected by radio electric horizon [1]. However, its primary weakness lies in the antennas used for the excitation of the surface field, because a considerable amount of energy is spread towards the sky.…”

Section: Introductionmentioning

confidence: 99%

Towards a Better Excitation of the Surface Wave

Petrillo¹,

Jangal²,

Darces³

et al. 2010

PIER M

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Abstract-In the field of maritime surveillance, HF surface wave radars seem to be considered as an optimum and low cost solution. Nevertheless, the commonly used radiating elements of those radars are not yet able to only launch surface waves. We aim to design a specific radiating element optimized for exciting such waves. The first step of such an issue is to set thoroughly the problem. In this paper, surface waves on the boundary between two dielectric media are considered. Kistovich decomposition is applied in order to discuss the influence of the Zenneck wave on the field excited at the sea surface. It is shown that Zenneck approach and Norton's one are not contradictory. Above all, we point out that, using Kistovich decomposition to design radiating elements, we can expect a significant improvement of the surface wave intensity.

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Nonplanar Arrays

2010

Antenna Arrays

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An integrated maritime surveillance system based on high-frequency surface-wave radars. 1. Theoretical background and numerical simulations

Cited by 132 publications

References 16 publications

Ionospheric effect of HF surface wave over‐the‐horizon radar

Ionospheric effect of HF surface wave over‐the‐horizon radar

Towards a Better Excitation of the Surface Wave

Nonplanar Arrays

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