Patent ID: 7768441
Filing Date: 2010-08-03
Classification: G01S

Abstract:
1. A method for refining surface deformation measurements, comprising: providing InSAR data, wherein the InSAR data is line of sight InSAR data; providing Global Positioning System (GPS) data; filtering the InSAR data using a two dimensional convolution filter; assembling the GPS data over a time span that matches the InSAR data; resolving the GPS data into a line of sight direction represented by the InSAR data; determining a correction, wherein determining the correction includes: generating a corrected line of sight image, wherein the generating includes applying the correction to the InSAR data using a minimally curved surface between a plurality of known points; generating a plurality of XY motion maps, wherein generating includes: using the correlation coefficient to produce a linear combination of the plurality of XY motion maps; and using the linear combination to convert the InSAR data to vertical motion.