This paper proposes two different calibration techniques for Geostationary Synthetic Aperture Radar (GEOSAR) missions requiring a high precision positioning, based on Active Radar Calibrators and Ground Based Interferometry. The research is enclosed in the preparation studies of a future GEOSAR mission providing continuous monitoring at continental scale.
Martin, R., Fernández, M., Casado, D., Broquetas, A. Proposed satellite position determination systems and techniques for Geostationary Synthetic Aperture Radar. "European Journal of Remote Sensing", 2016, vol. 49, núm. 1, p. 735-744.