Application of Variance Components Estimation in Airborne InSAR Block Adjustment

doi:10.11947/j.AGCS.2016.20150415

Abstract

Abstract: Based on the idea of posterior variance component estimation, aiming at the problem that variance component for each observation component can't be estimated directly, the theory of weights determination for airborne InSAR interferometric parameters calibration with block adjustment is studied and the corresponding calibration method is designed on the basis of the extended model of variance components estimation of Helmert type. Calibration experiments performed on Chinese dual antenna airborne InSAR data confirm that the calibration schemes with posterior variance component estimated can take generation accuracy and mosaic accuracy of DEM into account reasonably.

Key words: interferometric synthetic aperture radar, Helmert, interferometric parameters, block adjustment, weights determination

CLC Number:

P231

XIONG Xin, JIN Guowang, ZHANG Hongmin, XU Qing. Application of Variance Components Estimation in Airborne InSAR Block Adjustment[J]. Acta Geodaetica et Cartographica Sinica, 2016, 45(5): 592-600.

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