9/4/2023 0 Comments Radar reflector use![]() ![]() In: Proceedings of EUSAR 2014 Conference, June 03–05, Berlin, Germany. doi: 10.1109/IGARSS.2014.6947024īalss U, Gisinger C, Cong X, Brcic R, Hackel S, Eineder M (2014b) Precise measurements on absolute localization accuracy of TerraSAR-X on the base of far-distributed test sites. In: Proceedings of IGARSS’14 Conference, July 13–18, Québec, Canada, pp 2671–2674. doi: 10.1109/IGARSS.2013.6723835īalss U, Breit H, Fritz T, Steinbrecher U, Gisinger C, Eineder M (2014a) Analysis of internal timings and clock rates of TerraSAR-X. In: Proceedings of IGARSS’13 Conference, July 21–26, Melbourne, Australia, pp 4499–4502. doi: 10.1109/IGARSS.2012.6351217īalss U, Gisinger C, Cong X, Brcic R, Steigenberger P, Eineder M, Pail R, Hugentobler U (2013) High resolution geodetic Earth observation with TerraSAR-X: Correction schemes and validation. In: Proceedings of IGARSS’12 Conference, July 22–27, Munich, Germany, pp 1625–1628. doi: 10.1007/s0019-4īalss U, Cong X, Brcic R, Rexer M, Minet C, Breit H, Eineder M, Fritz T (2012) High precision measurement on the absolute localization accuracy of TerraSAR-X. ![]() The results also include our 1.5 m CR available at Wettzell, and the outcomes clearly demonstrate the advantage of the multi-directional octahedrons over conventional CRs for global positioning applications with SAR.Īltamimi Z, Collilieux X, Métivier L (2011) ITRF2008: an improved solution of the international terrestial reference frame. Moreover, we present statistical uncertainty estimates of the observations and the positioning solutions, which are additionally provided by our parameter estimation algorithms. The comparison with the independently determined reference coordinates confirms the positioning accuracy with 2–5 cm for the standard approach, and 2–3 cm for the differential processing. ![]() In this paper, we present and discuss both methods based on results when applying them to the aforementioned Wettzell data set of the octahedrons. Contrary to our standard processing, the differential approach does not require external corrections for the atmospheric path delays and the geodynamic displacements, rendering it particularly useful for joint geodetic networks employing SAR and GNSS. By applying our least squares stereo SAR algorithm already tested with common trihedral corner reflectors (CRs), and introducing a novel differential extension using one octahedron as reference point, the coordinates of the remaining octahedrons were directly retrieved in the International Terrestrial Reference Frame (ITRF). Four octahedrons were deployed at Wettzell geodetic observatory, and observed by TerraSAR-X with 12 acquisitions in three different geometries. Its highest resolution imaging mode termed staring spotlight enables the use of such octahedron reflectors with a dimension of only half a meter, but still providing backscatter equivalent to 1–2 cm observation error. In this paper, we report on the direct positioning of small multi-directional radar reflectors, so-called octahedrons, with the synthetic aperture radar (SAR) satellite TerraSAR-X. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |