Title :
Decorrelation induced by interpolation errors in InSAR processing
Author :
Bamler, Richard ; Hanssen, Ramon
Author_Institution :
Remote Sensing Data Center, German Aerosp. Res. Establ., Wessling, Germany
Abstract :
Interpolation is required in interferometric SAR processing for co-registration of complex signals. Straightforward system theoretical considerations provide objective figures of merit, like interferometric decorrelation and phase noise, for interpolators. Theoretical and simulation results are given for nearest neighbor, piecewise linear, 4-point and 6-point cubic convolution kernels
Keywords :
geophysical techniques; interpolation; radar imaging; radar theory; remote sensing by radar; spaceborne radar; synthetic aperture radar; topography (Earth); InSAR; SAR; co-registration; complex signal; cubic convolution kernel; decorrelation; geophysical measurement technique; interferometric SAR; interferometric SAR processing; interpolation error; land surface topography; phase noise; radar remote sensing; spaceborne radar imaging; synthetic aperture radar; terrain mapping; Convolution; Decorrelation; Interpolation; Kernel; Nearest neighbor searches; Phase noise; Signal sampling; Space technology; Synthetic aperture radar interferometry; Transfer functions;
Conference_Titel :
Geoscience and Remote Sensing, 1997. IGARSS '97. Remote Sensing - A Scientific Vision for Sustainable Development., 1997 IEEE International
Print_ISBN :
0-7803-3836-7
DOI :
10.1109/IGARSS.1997.609036
