Title :
Time-Domain Reconstruction Algorithms for FMCW-SAR
Author_Institution :
Fraunhofer Inst. for High Freq. Phys. & Radar Tech. (Fraunhofer FHR), Wachtberg, Germany
fDate :
5/1/2011 12:00:00 AM
Abstract :
In this letter, we develop time-domain reconstruction algorithms for frequency-modulated continuous wave synthetic aperture radar (FMCW-SAR). The algorithms considered here are the time-domain correlation algorithm, and two versions of the backprojection algorithm: the standard one based on the start-stop approximation, and a modified version that takes into account the movement of the sensor during the transmission of the pulse. Numerical simulations illustrate the performance of the algorithms, showing that the start-stop approximation may not be valid for FMCW-SAR, whereas the modified backprojection algorithm works very well here.
Keywords :
FM radar; synthetic aperture radar; FMCW-SAR; backprojection algorithm; frequency-modulated continuous wave synthetic aperture radar; start-stop approximation; time-domain correlation algorithm; time-domain reconstruction; Approximation algorithms; Approximation methods; Image resolution; Reconstruction algorithms; Synthetic aperture radar; Time domain analysis; Backprojection; FMCW-SAR; start-stop approximation; time-domain reconstruction;
Journal_Title :
Geoscience and Remote Sensing Letters, IEEE
DOI :
10.1109/LGRS.2010.2078486