Proceedings with Extended Abstracts (single PDF file) - Radio ...

Improving MST radar resolution by using various imaging techniques may be anothercomplementary approach for a better understanding of radar backscattering processes. R.Palmer (with H. Tong, V. Tellabati, B. Cheong and M. Hoffman) presented two talks aboutradar imaging technique developments on a turbulent eddy 915 MHz profiler. Simulationsand applications were discussed. Horizontal maps of the wind field and reflectivitystructures obtained with a sophisticated Capon beamforming method applied on datacollected from 90 independent receivers were shown. The authors demonstrated thecapabilities of the proposed coherent radar imaging, not only for turbulence studies, butalso for attenuating airplane interferences. Horizontal maps of echo power using a multibeamapproach are also of great importance for our purpose. Recent papers by R.Worthington et al. were a clear demonstration of their potentials by identifying a systematicskew of the horizontal echo power distribution related to the direction of the wind shear, asrecalled by F. Dalaudier. Such a kind of information is crucial for interpreting radar echoes.Unfortunately, a review on the topic was not available because R. Worthington was unableto attend the workshop.Aspect sensitivity (i.e. the enhancement of echo power in vertical direction with respect tooblique echo power) was discussed by the invited papers and by J. Röttger within thestudies of the PMSE layering. PMSE are indeed often aspect sensitive. Double-layerstructures are usual but multiple layering structures can also be observed. They mayindicate a complex mechanism of interactions between waves and turbulence.19