1. Introduction
Multi-platform, multi-frequency airborne SAR experiments are complex and logistically challenging. Thus, many studies rely on satellite SAR data, either by using various sensor systems (e.g. [1]) or one of the newly established SAR constellation missions (e.g. [2]). Fewer studies make use of multi-platform airborne data at similar frequencies, which, however, are often non-simultaneously acquired ([3], [4]). In this paper, we present an experiment in which two different sensor platforms recorded the same test areas either simultaneously or only slightly shifted in time (minutes to a maximum of 2 days), covering a frequency range from the low-frequency L-band to the high-frequency Ka-band. The systems used are the pulsed F-SAR system of DLR ([5]) and the FMCW MIRANDA35 system of FHR ([6]). Here, we focus on three different experiments that were conducted within the multi-platform campaign: (1) polarimetric acquisitions of the same test site, (2) acquisition of moving targets for ground moving target indication (GMTI) and inverse SAR (ISAR) and (3) the acquisition of the signature of one platform in the beam of the other (AMTI).