[2] [2] LIN Y, HONG W, TAN W X, et al.Extension of range migration algorithm to squint circular SAR imaging［J］.IEEE Geoscience and Remote Sensing Letters, 2011, 8(4)：651-655.

[3] [3] LI Y H, JIN T, SONG Q.3D back-projection imaging in circular SAR with impulse signal［C］//The 2nd Asian-Pacific Conference on Synthetic Aperture Radar, 2009:775-778.

[5] [5] LUO Y H, SONG H J, WANG R.An accurate and efficient extended scene simulator for FMCW SAR with static and moving targets［J］.IEEE Geoscience and Remote Sensing Letter, 2014, 11(10):1159-1164.

[7] [7] SOUMEKH M.Reconnaissance with slant plane circular SAR imaging［J］.IEEE Transactions on Image Processing, 1996, 8(5):1252-1265.

[8] [8] DALLINGER A, SCHELKSHORN S, DETLEFESN J.Effi-cient ω-k-algorithm for circular SAR and cylindrical reconstruction areas［J］.Advances in Radio Science, 2006, 4(8):85-91.

[9] [9] KOU L L, WANG X Q, CHONG J S, et al.Circular SAR processing using an improved omega-k-type algorithm［J］.Journal of Systems Engineering and Electronics, 2010, 21(4):572-579.