Ralf Horn

Learn More
—SAR tomography (SARTom) is an imaging technique that allows multiple phase center separation in the vertical direction , leading to a 3-D reconstruction of the imaged scene. The retrieval of volume structure information (e.g., for forest classification) and the solution of the layover problem are two of the most promising applications. In this letter,(More)
—This paper presents a methodology to process airborne interferometric synthetic aperture radar (SAR) data to measure surface velocity fields (SVFs) of temperate glaciers, and applies it to data acquired over the Aletsch glacier. The first part of this paper deals with the main limitation in airborne interfero-metric SAR to retrieve reliable interferometric(More)
—Synthetic aperture radar (SAR) interferometric data offer the opportunity to measure temperate glacier surface topography and displacement. The increase of the resolution provided by the most recent SAR systems has some critical implications. For instance, a reliable estimate of the phase gradient can only be achieved by using interferogram local(More)
— The initiative to INDREX-II originated from the recommendation of the POLinSAR 2003 workshop held by the European Space Agency (ESA) in Frascati, Italy. From the participating scientists a gap in the knowledge and performance of polarimetric and interferometric SAR over tropical forest has been identified and a recommendation has been given for an(More)
– In continuation of the BACCHUS project, aimed at establishing a reference high quality geographic information system for vineyards, an airborne SAR survey has been carried out in fall 2005 in the Frascati area, near Rome (Italy) to demonstrate the potential of airborne radar remote sensing in vineyard characterization. This contribution reports on the(More)
1. ABSTRACT The Microwaves and Radar Institute of the German Aerospace Center (DLR) is known for consistent work on the field of airborne synthetic aperture radar and its application. In April 2008 the 20th anniversary of the maiden flight of the well-known E-SAR system was celebrated. E-SAR was maintained well over the time. It provided valuable knowledge(More)