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Efficient and Precise Processing for Squinted Spotlight SAR through a Modified Stolt Mapping
EURASIP Journal on Advances in Signal Processing volume 2007, Article number: 059704 (2006)
Processing of squinted SAR spotlight data is a challenge because of the significant range migration effects of the raw data over the coherent aperture time. Although in theory the ()-algorithm takes care of these aspects, its digital implementation requires a time-consuming interpolation step. Moreover, the limited precision of this interpolation can introduce distortions at the edges of the final image especially for squinted geometries. A wave number domain processing using a modified Stolt mapping will be developed and analyzed to enhance the quality of the final SAR image. Additionally, the proposed algorithm has a decreased computational load compared to the original ()-algorithm. Simulation results will validate the focusing and efficiency performances of the modified wave number domain algorithm.
Cumming IG, Wong FH: Digital Processing of Synthetic Aperture Radar Data. Artech House, Boston, Mass, USA; 2005. chapter 5, 8
Carrara WG, Goodman RS, Majewski RM: Spotlight SAR Signal Processing Algorithms. Artech House, Boston, Mass, USA; 1995. chapter 10
Bamler R: A comparison of range-Doppler and wavenumber domain SAR focusing algorithms. IEEE Transactions on Geoscience and Remote Sensing 1992,30(4):706–713. 10.1109/36.158864
Fornaro G, Sansosti E, Lanari R, Tesauro M: Role of processing geometry in SAR raw data focusing. IEEE Transactions on Aerospace and Electronic Systems 2002,38(2):441–454. 10.1109/TAES.2002.1008978
Gough PT, Hawkins DW: Unified framework for modern synthetic aperture imaging algorithms. International Journal of Imaging Systems and Technology 1997,8(4):343–358. 10.1002/(SICI)1098-1098(1997)8:4<343::AID-IMA2>3.0.CO;2-A
Fornaro G, Franceschetti G, Perna S: Motion compensation of squinted airborne SAR raw data: role of processing geometry. Proceedings of IEEE International Geoscience and Remote Sensing Symposium (IGARSS '04), September 2004, Anchorage, Alaska, USA 2: 1518–1521.
Berens P: Extended range migration algorithm for squinted spotlight SAR. Proceedings of IEEE International Geoscience and Remote Sensing Symposium (IGARSS '03), July 2003, Toulouse, France 6: 4053–4055.
Berens P: Efficient wave number domain processing for squinted spotlight SAR. Proceedings of 5th European Conference on Synthetic Aperture Radar (EUSAR '04), May 2004, Ulm, Germany 1: 171–174.
Soumekh M: SAR Signal Processing. John Wiley & Sons, New York, NY, USA; 1999.
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Vandewal, M., Speck, R. & Süß, H. Efficient and Precise Processing for Squinted Spotlight SAR through a Modified Stolt Mapping. EURASIP J. Adv. Signal Process. 2007, 059704 (2006). https://doi.org/10.1155/2007/59704
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