Aufbau- und Verbindungstechniken fuer faser- und integriert-optische Sensoren (AVT-FIOS). Phase 1 Teilvorhaben: Klebesysteme, Laserloeten, Anodisches Bonden, Formgedaechtnismetallklammern, Fuehrungsstrukturen, Normung. Abschlussbericht

In the framework of preliminary investigations various technologies were examined for the possibilities of application, performance and system compatibility in the field of fibre-chip-coupling. New UV-adhesives, which were developed and modified within the project, were examined and analysed. Laser-micro-welding techniques were designed and examined to realize fiber-arrays and array-couplings. The possibilities of coupling different materials by anodic bonding were examined. A releasable coupling technique by use of memory shape alloy-devices was investigated. Various techniques using laser-milling to fabricate guiding and alignments structures in Lithiumniobat were investigated. The results of various structures were analysed. Within the project standards in the field of integrated optics were considered and proposedSIGLEAvailable from TIB Hannover: F94B0016 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Forschung und Technologie (BMFT), Bonn (Germany)DEGerman

Das thermische Plasmaexperiment im Hoehenforschungsraketenprogramm HEATING. Projekt: 'HERO' Schlussbericht

With 12 refs., 6 tabs. and 35 figs.SIGLECopy held by FIZ Karlsruhe; available from UB/TIB Hannover / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

A numerical method to generate high temporal resolution precipitation time series by combining weather radar measurements with a nowcast model

The topic of this paper is temporal interpolation of precipitation observed by weather radars. Precipitation measurements with high spatial and temporal resolution are, in general, desired for urban drainage applications. An advection-based interpolation method is developed which uses methods for vector field estimation already known from short-term weather radar nowcasting. However, instead of forecasting the weather radar rainfall, the proposed interpolation method exploits the advection of the rainfall in the interpolation. The interpolated rainfall fields are validated by measurements at ground level from laser disdrometers. The proposed interpolation method performs better when compared to traditional interpolation of weather radar rainfall where the radar observation is considered constant in time between measurements. It is demonstrated that the advection-based interpolation method reconstructs a significant part of the temporal variations of the rainfall. Moreover, the interpolated precipitation fields estimate accumulated rain depths more accurately