Concurrent Imaging for TerraSAR-X: Wide-Area Imaging paired with High-Resolution Capabilities

Thomas Kraus, Joao Pedro Turchetti Ribeiro, Markus Bachmann, Ulrich Steinbrecher, Christo Grigorov
2022 IEEE Transactions on Geoscience and Remote Sensing  
The concurrent imaging technique enables parallel acquisitions with different beams or modes, e.g., a wide area Stripmap mode with a high resolution Spotlight mode. Such a concurrent Stripmap/Spotlight imaging technique is investigated for TerraSAR-X. This technique employs a pulse-topulse interleaving scheme to acquire two acquisitions -even of disjunctive areas -at the same time, offering products with different resolution and coverage portfolios. This capability is especially interesting for
more » ... customers interested in an overview of a larger area but at the same time observing an area of interest with higher resolution, e.g., for infrastructure monitoring or reconnaissance applications. The basic concept, as well as the driving system parameters, are discussed in detail, together with a coverage analysis revealing the high availability rate of the mode combinations on a global scale. A processing approach reusing a substantial part of the existing infrastructure is described and exemplary acquisitions are shown, together with a detailed performance analysis with respect to resolution and ambiguities.
doi:10.1109/tgrs.2022.3140290 fatcat:zpiyrzmwpzejzl4wele2gbnbai