UWB SAR Time-Frequency Representation Image Formation in Low Signal-to-Clutter Ratio Environment

Sheen D R, Strawitch C M, Lewis T B. UHF wideband SAR design and preliminnary results [C], IGARSS'94 Proceedings, Pasadena , USA, 1994: 289.291.[2]Skolnik M, Andrews G, Hansen J P. Ultrawide band microwave-radar conceptual design [J]. IEEE Trans. on Aero. and Elec. Sys. Magazine, 1995, 10(10): 25.29.[3]Binder B T, Toups M F, Ayasli S, Adams E M. SAR foliage penetration phenomenology of tropical rain forest and northern U. S. forest[C]. IEEE International Radar Conference, WashingtonD.C. ,USA, 1995: 158.163.[4]Sheen D R. Foliage transmission measurements using a ground-based UWB(300-1300MHz) SAR system [J]. IEEE Trans. on Geosci Remote Sensing, 1994, 32(1): 18.130.[5]Sheen D R, Lewis T B, Wei S C, Kletzli D W. Imaging of buried and foliage-obscured objects with an ultrawide-bandwidth polarimetric SAR [C].[J]. SPIE.1993,Vol.1942:12-[6]Cameron R M, Stryker T, et al.. Development and application of airborne ground-penetrating radar for environmental disciplines [C][J].SPIE.1993, Vol.1942:21-[7]Carin L, Kapoor R, Baum C E. Polarimetric SAR imaging of buried landmines [J].IEEE Trans. on Geo. And Remote Sensing.1998, 36(12):1985-[8]Soumekh M. Reconnaissance with ultra wideband UHF synthetic aperture radar [J].IEEE Signal Processing Magazine.1995, 12(7):21-[9]Runkle P, Bharadwaj P K, Couchman L, Carin L. Hidden Markov models for multiaspect target classification [J].IEEE Trans. on Signal Processing.1999, 47(7):2035-[10]Runkle P, Varin L, Couchman L, Yoder T, Bucaro J. Multiaspect target identification with wave-based matched pursuits and continuous hidden Markov models [J].IEEE Trans. on Pattern Anal. Machine Intell.1999, 21(12):1371-[11]Dong Yanting, Runkle P R, Carin L, Damarla R, Sullivan A, Ressler M A, Sichina J. Multi-aspect detection of surface and shallow-buried unexploded ordnance via ultra-wideband synthetic aperture radar [J].IEEE Trans. on Geosci. Remote Sensing.2001, 39(6):1259-[12]Chaney R D, Willsky A S, Novak L M. Coherent aspect- dependent SAR image formation [C][J].SPIE.1994,Vol. 2230:256-[13]张贤达, 保铮. 非平稳信号分析与处理[M]. 北京：国防工业出版社，1998: 20.68.[14]Soumekh M. Synthetic aperture radar signal processing with MATLAB algorithm [M]. A Wiley-Interscience publication.[J].John Wiley Sons, INC.1999,:-