Geodesy via GPS and INSAR integration
First Claim
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;
matching the InSAR data with the GPS data at one or more correction points along the line of sight direction; and
fitting a plane to the InSAR data, wherein the plane makes an average line of sight deformation around an edge of a scene represented by the InSAR data equal to zero;
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;
correlating a plurality of XY motions from a plurality of GPS sites with a gradient of the corrected line of site image;
determining a correlation coefficient, wherein the correlation coefficient is a percentage that represents how dependent calculation of the XY motion will be upon the gradient of the corrected line of site image; and
building a plane of XY motion using at least one of the plurality of XY motions;
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.
1 Assignment
0 Petitions
Accused Products
Abstract
A method for representing surface deformation measurements, including providing InSAR data, wherein the InSAR data is line of sight InSAR data; providing Global Positioning System (GPS) data; filtering the InSAR data; assembling the GPS data over a time span; resolving the GPS data into a line of sight direction; determining a correction; generating a corrected line of sight image; generating a plurality of XY motion maps, wherein generating includes: correlating a plurality of XY motions from a plurality of GPS sites with a gradient of the corrected line of site image; determining a correlation coefficient; and building a plane of XY motion using at least one of the plurality of XY motions; 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.
-
Citations
35 Claims
-
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; matching the InSAR data with the GPS data at one or more correction points along the line of sight direction; and fitting a plane to the InSAR data, wherein the plane makes an average line of sight deformation around an edge of a scene represented by the InSAR data equal to zero; 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; correlating a plurality of XY motions from a plurality of GPS sites with a gradient of the corrected line of site image; determining a correlation coefficient, wherein the correlation coefficient is a percentage that represents how dependent calculation of the XY motion will be upon the gradient of the corrected line of site image; and building a plane of XY motion using at least one of the plurality of XY motions; 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method comprising:
-
determining a surface deformation map that includes motion along a slant-range axis that is offset from a horizontal axis and a vertical axis; receiving data defining at least one land location within an area that is within the surface deformation map, wherein the data defining the at least one land location comprises more than one axis motion of the at least one land location; converting the motion along the slant-range axis of the surface deformation map to vertical motion, using the more than one axis motion of the at least one land location; and correcting the surface deformation map using the vertical motion derived from the motion along the slant-range axis. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. A computer-readable medium that provides instructions, which when executed by a machine, cause said machine to perform operations comprising:
-
receiving data for surface deformation that includes motion along a slant-range axis that is offset from a horizontal axis and a vertical axis, wherein the data is received from an airborne radar operation; determining a surface deformation map of a land surface derived the data that includes the motion along the slant-range axis; receiving data along a three axis motion defining at least one land location within an area that is within the surface deformation map, using a Global Positioning System (GPS); converting the data that includes the motion along the slant-range axis to vertical motion, using the data along the three axis motion; and correcting the surface deformation map using the vertical motion derived from the motion along the slant-range axis. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
-
-
29. An apparatus comprising:
-
means for determining a surface deformation map that includes motion along a slant-range axis that is offset from a horizontal axis and a vertical axis; means for receiving data defining at least one land location within an area that is within the surface deformation map, wherein the data defining the at least one land location comprises a three axis motion that includes two horizontal motion axes and a vertical motion axis; means for converting the motion along the slant-range axis of the surface deformation map to vertical motion, using the more than one axis motion of the at least one land location; and means for correcting the surface deformation map using the vertical motion derived from the motion along the slant-range axis. - View Dependent Claims (30, 31, 32, 33, 34, 35)
-
Specification