Orbit inaccuracy influence in InSAR products

Min He; Xiufeng He

doi:10.1117/12.832604

30 October 2009 Orbit inaccuracy influence in InSAR products

Min He, Xiufeng He

Proceedings Volume 7494, MIPPR 2009: Multispectral Image Acquisition and Processing; 74940S (2009) https://doi.org/10.1117/12.832604
Event: Sixth International Symposium on Multispectral Image Processing and Pattern Recognition, 2009, Yichang, China

Abstract

Satellite orbital state vectors are required not only to determine the baseline parameters, the coarse offset in registration step but also to remove the phase of the flat Earth and geocode the InSAR products to WGS84. The quality of orbit plays an important role in InSAR products, i.e. DEMs and deformation maps. The orbit inaccuracy in along-track, radial and across-track directions is transformed into a noise baseline vector. Baseline errors are introduced into the InSAR products in the Flat-Earth phase subtraction and topographic phase subtraction processing steps. Under the transformation, the influences of the orbit inaccuracy in the two InSAR processing steps and the InSAR products are analyzed. According to the error propagation theory, we built the relationship between orbit errors and InSAR products. The influence of orbit errors caused by imprecise topography subtraction is small in comparison to imprecisely subtracted flat-Earth phase. The propagation of orbit errors to deformation maps is derived, revealing that the influence of orbital error on deformation is much lower than that on height and only sub-millimeters.

Citation Download Citation

Min He and Xiufeng He "Orbit inaccuracy influence in InSAR products", Proc. SPIE 7494, MIPPR 2009: Multispectral Image Acquisition and Processing, 74940S (30 October 2009); https://doi.org/10.1117/12.832604

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available