Organizing the International Radar Symposium 2013 (IRS 2013), the Hamburg University of Technology (TUHH) and the German Institute of Navigation (DGON) continue a very successful sequence of Radar Symposia, which started in 1998 in Munich, Germany. Due to the rapid development of technologies, radar technique is still an expanding technical and economical segment with practical applications both in civil and military areas. The worldwide family of radar researchers and experts is quite small and everyone from the radar family is cordially invited to attend the International Radar Symposium 2013 in Dresden, Germany.