Florian Behner

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Geant4 is a toolkit for simulating the passage of particles through matter. It includes a complete range of functionality including tracking, geometry, physics models and hits. The physics processes offered cover a comprehensive range, including electromagnetic, hadronic and optical processes, a large set of long-lived particles, materials and elements,(More)
The work presented in this paper describes the signal processing of raw data measured by the HITCHHIKER bistatic radar system which is the final step toward open publication of the raw radar data acquired in the hybrid (spaceborne/stationary) experiments in cooperation with the TerraSAR-X/TanDEM-X system. During the preprocessing, the data stored by the(More)
In this paper, the development of a stationary SAR receiver system using TerraSAR-X as transmitter is described. First the bistatic geometry and expected resolution are considered. After giving an overview of the hardware setup, the expected performance of the system is evaluated. The paper ends with the processed results of a measurement campaign performed(More)
A lot of bistatic experiments have recently been performed by different researchers to show the differences between monostatic and bistatic SAR. The acquired data was needed to verify the developed bistatic processing algorithms. To extend the conventional bistatic SAR experiments, we investigated whether bistatic systems can be used in the field of(More)
In summer 2009 the SAR research group of the Center for Sensorsystems (ZESS) started a project to generate high resolution SAR data, which is acquired by a stationary receiver. As illuminator for our experiments the German TerraSAR-X satellite is used, which can generate frequency modulated signals with a bandwidth up to 300MHz. We intend to acquire the(More)
This article proposes an imaging algorithm based on Keystone Transform for bistatic SAR with a stationary receiver. It can efficiently be applied to high-resolution spotlight mode, and can directly be process the bistatic SAR data which have been ranged compressed by the synchronization reference pulses. Both simulation and experimental results validate the(More)
The structure of hadronic events from Z 0 decay is studied by measuring event shape variables, factorial moments, and the energy flow distribution. The distributions, after correction for detector effects and initial and final state radiation, are compared with the predictions of different QCD Monte Carlo programs with optimized parameter values. These(More)
We report on measurements of hadronic and leptonic cross sections and leptonic forwardbackward asymmetries performed with the L3 detector in the years 1993–95. A total luminosity of 103 pb−1 was collected at centre-of-mass energies √ s ≈ mZ and √s ≈ mZ±1.8 GeV which corresponds to 2.5 million hadronic and 245 thousand leptonic events selected. These data(More)