Recovery effect in radiowave propagation

Wu, Zhipeng; Maclean, T.S.M.; Jayasundere, N.; Carter, L.J.; Williamson, A.G.

doi:10.1049/el:19900110

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…The surface wave can be strong and dominant when the transmitter is near the sea surface and a recovery effect (also called Millington effect [21,22]) can appear when a transition between land and sea surface is met. It is characterised on the propagation path by an increase of the propagation losses above the land path and a decrease of the propagation losses above the sea.…”

Section: Example Of Recovery Effectmentioning

confidence: 99%

Apparent Radar Cross Section of a Large Target Illuminated by a Surface Wave Above the Sea

Fabbro¹,

Combes²,

Guillet³

2005

PIER

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Abstract-Classical assesssment of the received power by a radar leads to a decorrelation of many relevant phenomena (i.e. propagation, backscattering), which may introduce modelling errors notably in the presence of large target with respect to the wavelength. To overcome this limitation, a new hybrid approach is proposed. It combines a method of propagation calculation (the parabolic wave equation) with a method of scattering calculation (the EFIE solved by a method of moment approach) and an application of the reciprocity principle (the power coupling factor). Each method constituting the hybrid approach is described; the example of a large cargo is chosen and its apparent RCS is evaluated above the sea at low frequency. The results are discussed, studying the influence of the different parts of the boat on the apparent RCS. † Also with UPS-AD2M-IGEEP, 118 route de Narbonne,

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Section: Example Of Recovery Effectmentioning

confidence: 99%

Apparent Radar Cross Section of a Large Target Illuminated by a Surface Wave Above the Sea

Fabbro¹,

Combes²,

Guillet³

2005

PIER

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“…Assim, é esperado um aumento na intensidade do sinal logo na fronteira entre as regiões devido ao fato que, agora, menos energia é perdida dentro do solo. Esse é o efeito recuperação que foi observado experimentalmente por Millington e Isted [124] e pode ser calculado analiticamente por um método proposto por Eckersley [125] , pelo teorema da compensação [126,127]. Esse caso é a reprodução de um experimento feito por Millington e Isted [124] sobre o efeito recuperação.…”

Section: Refração Costal E Efeito Recuperaçãounclassified