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Adaptive Multicarrier OFDM SAR Signal Processing.
- Source :
-
IEEE Transactions on Geoscience & Remote Sensing . Oct2011 Part 1, Vol. 49 Issue 10, p3780-3790. 11p. - Publication Year :
- 2011
-
Abstract
- This paper describes a solution algorithm for ultrawideband orthogonal frequency-division multiplexing (OFDM) synthetic aperture radar (SAR) signal processing. A single pointlike target is assumed, and stripmap SAR geometry is used for the analysis. The peculiarity of extracting phase history from a multicarrier return signal—such as OFDM—is in solving for the phase component using all signals' subbands in frequency domain. The least squares approach is used to find the solution form, and a grid search algorithm is used to find the phase history sample estimates. Simulation results illustrating the algorithm's performance in a 1-D cross-range profile reconstruction case, as well as in 2-D SAR imaging scenarios, are presented and discussed. It is shown that the proposed method is effective in reconstructing cross-range profiles and possesses high potential for adaptive SAR imaging while exhibiting good computational performance approximating that of range-Doppler algorithm. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01962892
- Volume :
- 49
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Geoscience & Remote Sensing
- Publication Type :
- Academic Journal
- Accession number :
- 65967655
- Full Text :
- https://doi.org/10.1109/TGRS.2011.2165546