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dc.contributor.authorRecolons Martos, Jaume
dc.contributor.authorAndrews, L.C.
dc.contributor.authorPhillips, R.L.
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.identifier.citationRecolons, J.; Andrews, L. C.; Phillips, R. L. Analysis of beam wander effects for a horizontal-path propagating Gaussian-beam wave: focused beam case. Optical engineering, 2007, vol. 46, núm. 8, p. 86002-86002.
dc.description.abstractFailure of the first-order Rytov approximation to properly predict the scintillation index of a large-aperture focused beam, or an uplink collimated (or focused) beam, has been discussed in several recent publications, which cite beam wander effects as the main reason for this failure. We use computer simulations to examine several aspects of beam wander phenomena on a propagating convergent beam in the weak-fluctuation regime over a horizontal path at high altitude for which the refractive index structure parameter is on the order of C=1.39×10−16 m−2/3. Simulation results are presented at various ranges up to 10 km for (1) the beam wander centroid displacement, (2) the kurtosis excess of the irradiance profile, (3) the irradiance profile, (4) the mean-square hot spot displacement from the boresight and from the centroid, and (5) the scintillation index at the optical axis of the beam. In addition, simulation results are compared with theoretical models.
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Teledetecció
dc.subject.lcshLaser beams
dc.subject.lcshFluctuations (Physics)
dc.subject.otherLaser beams
dc.subject.otherLight propagation
dc.subject.otherOptical focusing
dc.subject.otherRefractive index
dc.subject.otherBeam wander effects
dc.subject.otherHorizontal-path propagating Gaussian-beam wave
dc.subject.otherFocused beam case
dc.subject.otherScintillation index
dc.subject.otherlarge-aperture focused beam
dc.subject.otherUplink collimated beam
dc.subject.otherFirst-order Rytov approximation failure
dc.subject.otherComputer simulations
dc.subject.otherWeak fluctuation regime
dc.subject.otherBeam irradiance profile
dc.subject.otherHot spot displacement
dc.subject.otherBeam wander centroid displacement
dc.titleAnalysis of beam wander effects for a horizontal-path propagating Gaussian-beam wave: focused beam case
dc.subject.lemacFluctuacions (Física)
dc.contributor.groupUniversitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access

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