Geodetic quality assessment of a low-cost InSAR transponder

Conference paper (2013)

Authors

P.S. Mahapatra Mathematical Geodesy and Positioning -

S. Samiei Esfahany Mathematical Geodesy and Positioning -

R.F. Hanssen Mathematical Geodesy and Positioning -

H. van der Marel Mathematical Geodesy and Positioning -

Research Group

Mathematical Geodesy and Positioning () (TU Delft)

InSAR Crustal deformation Transponder Corner reflector Measurement precision

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Published Date

2013

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Geoscience and Remote Sensing

Research Group

Mathematical Geodesy and Positioning

Abstract

The geodetic quality of a low-cost commercial off-the-shelf InSAR transponder has been empirically assessed, both under controlled conditions and operationally for landslide monitoring. Comparison of 113 transponder-InSAR observations with independent validation measurements (levelling or GPS) yields a transponder precision range of 1.8-4.6 mm after outlier removal for double-difference (spatial and temporal) phase measurements in the satellite line of sight for Envisat and ERS-2, making it a compact and lightweight alternative to a corner reflector for C-band InSAR.