Comparison of Predicted and Measured Multipath Impulse Responses

Haspert, Kent; Tuley, Michael T.

doi:10.1109/taes.2011.5937259

Cited by 24 publications

(14 citation statements)

References 11 publications

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“…Several approaches have been developed for modelling multipath propagation effects. A popular model in radar community is based on the empirical model (over the ocean) by Miller Brown and Vegh (MBV) [10,[41][42][43], which takes into account the specular and diffuse bistatic reflection. In particular, Global Positioning System (GPS) scattering modelling for sea states estimates is based on this empirical model [44], but it can be used for marine target backscattering [43].…”

Section: Attenuation and Scatteringmentioning

confidence: 99%

“…Unlike the urban environment (see [4][5][6][7] for instance), not many papers are available on the use of multipath propagation in a marine environment for ship recognition applications. Models for multipath propagation have been reported in literature [8][9][10]. Recently, the influence of the sea surface geometry has been taken into account in the path difference computation of the multipath propagation [11].…”

Section: Introductionmentioning

confidence: 99%

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Ship Profile Imaging Using Multipath Backscattering

2019

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This paper addresses the estimation of the height of a point scatterer over a sea surface via multipath exploitation for a High Range Resolution radar that is using pulse range compression, such as Synthetic Aperture Radars. We first focus our attention on the physical model, in particular on the specular/diffuse reflection coefficients, this coefficients being derived from the empirical Miller Brown and Vegh model. The gravity waves are also simulated since they modify the acquisition geometry such as the local grazing angle. Secondly, the signal model is derived, thus allowing an easy derivation of the time delays (direct echo and replicas), these time delays being converted into a height estimation for possible automatic ship recognition applications. Our algorithm is a non-conventional radar signal processing, in other words it uses the backscattered pulse over before range compression and demodulation. The aim of the paper is to understand for which radar and sea parameters, as well as acquisition scenes, it is possible to extract the scatterer height information using the multipath of the backscattered electromagnetic wave.

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Section: Attenuation and Scatteringmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ship Profile Imaging Using Multipath Backscattering

2019

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“…For wideband monopulse radar, since the range resolution is very high, these scattering centers can be effectively separated within different range resolution cells. Therefore, the wideband monopulse radar is used to restrain the angular glint effectively [5][6][7]. On the other hand, for the multipath propagation, the time delay of a target is smaller than its image.…”

Section: Introductionmentioning

confidence: 99%

Effects of Compound K‐Distributed Sea Clutter on Angle Measurement of Wideband Monopulse Radar

Hong

Pan

et al. 2017

Mathematical Problems in Engineering

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The effects of compound K-distributed sea clutter on angle measurement of wideband monopulse radar are investigated in this paper. We apply the conditional probability density function (pdf) of monopulse ratio (MR) error to analyze these effects. Based on the angle measurement procedure of the wideband monopulse radar, this conditional pdf is first deduced in detail for the case of compound -distributed sea clutter plus noise. Herein, the spatial correlation of the texture components for each channel clutter and the correlation of the texture components between the sum and difference channel clutters are considered, and two extreme situations for each of them are tackled. Referring to the measured sea clutter data, angle measurement performances in various K-distributed sea clutter plus noise circumstances are simulated, and the effects of compound K-distributed sea clutter on angle measurement are discussed.

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“…Nevertheless, less attention is given on the multipath effect on radar detection by scholars, relative to that given on the influence of sea clutter on radar detection. In [10], predicted multipath impulse response obtained by multipath modelling is examined by experimental results. Radar detection performance in perfect specular reflection environment is analysed in [11], with the assumption that one reflection path exists.…”

Section: Introductionmentioning

confidence: 99%

Effects of K distributed sea clutter and multipath on radar detection of low altitude sea surface targets

Yang

Feng

Wang

et al. 2014

IET Radar, Sonar & Navigation

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Sea clutter and multipath scattering affect the detection performance of sea surveillance radar simultaneously when the radar detects low altitude target over the sea. In this study, the effects of K distributed sea clutter and multipath on radar detection performance for low altitude sea surface targets are analysed. First, the probability density function of the multipath power propagation factor is derived by taking specular and diffuse reflections into account. Based on this, mathematical expressions of radar detection and false alarm probabilities in K distributed sea clutter and multipath are further derived. The radar detection performances in various K distributed sea clutter and multipath circumstances by simulation are presented, and the impacts of K distributed clutter and multipath on radar detection performance are analysed.

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Comparison of Predicted and Measured Multipath Impulse Responses

Cited by 24 publications

References 11 publications

Ship Profile Imaging Using Multipath Backscattering

Ship Profile Imaging Using Multipath Backscattering

Effects of Compound K‐Distributed Sea Clutter on Angle Measurement of Wideband Monopulse Radar

Effects of K distributed sea clutter and multipath on radar detection of low altitude sea surface targets

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