Title :
Improving height resolution of interferometric SAR
Author :
Homer, J. ; Longstaff, I.D.
Author_Institution :
Dept. of Electr. & Comput. Eng., Queensland Univ., Brisbane, Qld., Australia
Abstract :
The authors introduce and examine a technique for combining a number (m>1) of SAR interferograms to improve terrain height resolution. This improvement can be interpreted as being due to the synthesis of aperture in the plane perpendicular to the slant range direction, or alternatively as being due to the use of m independent height estimators. A key requirement in this multi interferogram/baseline InSAR approach is accurate phase alignment of the interferograms. Results of various phase alignment methods are presented
Keywords :
geodesy; geophysical techniques; radar applications; remote sensing by radar; spaceborne radar; synthetic aperture radar; topography (Earth); InSAR; SAR interferogram; geodesy; geophysical measurement technique; height resolution improvement; interferometric SAR; land surface topography; radar remote sensing; synthesis of aperture; terrain height resolution; Equations; Phase estimation; Pixel; Satellites; Signal processing; Spaceborne radar; Synthetic aperture radar interferometry; Upper bound;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1995. IGARSS '95. 'Quantitative Remote Sensing for Science and Applications', International
Print_ISBN :
0-7803-2567-2
DOI :
10.1109/IGARSS.1995.520239
