The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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Articles | Volume XLIII-B1-2020
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLIII-B1-2020, 331–336, 2020
https://doi.org/10.5194/isprs-archives-XLIII-B1-2020-331-2020
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLIII-B1-2020, 331–336, 2020
https://doi.org/10.5194/isprs-archives-XLIII-B1-2020-331-2020

  06 Aug 2020

06 Aug 2020

A SINGLE-PASS AIRBORNE INTERFEROMETRIC CALIBRATION METHOD RESEARCH FOR DEM MAPPING

L. J. Lu and G. M. Huang L. J. Lu and G. M. Huang
  • Key Laboratory of Surveying and Geospatial Information Science, Chinese Academy of Surveying and Mapping, 100830 Beijing, China

Keywords: Synthetic aperture radar interferometry (InSAR), airborne SAR, calibration, DEM mapping

Abstract. This paper presents a novel single-pass airborne interferometric calibration method with a limited Number GCPs for InSAR digital elevation model (DEM) mapping. The proposed method is based on a rigorous three-dimensional model for a single-pass airborne InSAR system. The corrected InSAR parameters of baseline length, baseline inclination, near slant range, and Doppler centroid frequency, as well as phase offset, can be jointly solved via a unified optimization procedure in terms of the constructed three-dimensional geometric model using a limited number ground control points (GCPs). The proposed method is evaluated on real data of the CASMSAR system in X-band, the final DEMs generated by the calibration processing achieve a high accuracy level (1–3 m standard deviation), even in the presence of only 3–5 GCPs.