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1. Ager, T.P. An introduction to synthetic aperture radar imaging. Oceanography 26(2). 2013. 2033.
2. A. F. Yegulap, Minimum Entropy Auto-Focus, Seventh Annual Adaptive Sensor Array Processing. Lexington, MA: MIT Lincoln Laboratory, 1999. P. 2536.
3. Wahl D.E., Eichel P.H., Ghiglia D.C., Jakowatz C.V.Jr. Phase Gradient Auto-Focus - A Robust Tool for High Resolution SAR Phase Correction. IEEE Trans, on Aerospace and Electronics Systems. 1994. P. 827-835.
4. Carrara W.G., Goodman R.S., MaJevsJd R.M. Spotlight Synthetic Aperture Radar Signal Processing Algorithms. Boston. London. Artech House. 1995. P. 554.
5. . ., . ., . ., . . / . . . . .: . 2010. 680 .
6. .., .., .. . 59- - - .. . 2010. 124 .
7. Armin W. Doerry. Basics of Polar-Format Algorithm for Processing Synthetic Aperture Radar Images. SANDIA REPORT. SAND2012-3369. 2012. 66 .
8. . . , . . , . . [ .]; . . . . . : . : . . -. 2011. 400 .
9. M. Gottwald, U. Shonfeldt, S. Idler, G. Danzer, M. v. Alberti. SAR Space Packet Protocol Data Unit. 2014. 85 c.