Terahertz holographic radar speckle suppression method based on multi-look correction of correlation angle

Jing Wen; Cui Zhenmao; Cheng Binbin; Jiang Ge; Zhang Jian

doi:10.3788/irla201948.0125005

[1] Herschel R, Briese G, Lang S A, et al. Focused imaging by geometric optics for real-time passenger screening at sub-millimeter wave frequencies[C]//Microwave Conference, IEEE, 2017: 1549-1552.

[2] Gao Jingkun, Cui Zhenmao, Cheng Binbin, et al. Fast three-dimensional image reconstruction of a standoff screening system in the terahertz regime[J]. IEEE Transactions on Terahertz Science & Technology, 2018, 8(1): 1-14.

[3] Sheen D M, Hall T E, Severtsen R H, et al. Active wideband 350 GHz imaging system for concealed-weapon detection[C]//SPIE, 2009, 7309: 73090I.

[4] Patrick M A. Illumination strategies to reduce target orientation requirements and speckle in millimeter wave imaging[D]. USA: The Ohio State University, 2014.

[5] Jaeger I, Stiens J, Koers G, et al. Hadamard speckle reduction for millimeter wave imaging[J]. Microwave & Optical Technology Letters, 2006, 48(9): 1722-1725.

[6] Jaeger I, Stiens J, Zhang Lixiao, et al. Comparison of speckle reduction diversity tools for active millimeter-wave imaging[J]. Journal of the Optical Society of America A Optics Image Science & Vision, 2008, 25(7): 1716-1721.

[7] Xu Meifang, Ding Junwen, Wang Guanjun, et al. Comparison of laser speckle suppression due to angle diversity[J]. Infrared and Laser Engineering, 2017, 46(8): 0806004. (in Chinese)

[8] Petkie D T, Holt J A, Patrick M A, et al. Multimode illumination in the terahertz for elimination of target orientation requirements and minimization of coherent effects in active imaging systems[J]. Optical Engineering, 2012, 51(9): 091604.

[9] Patrick M A, Joye C D, Lucia F C D, Multimode illumination for speckle reduction and angle neutrality in millimeter wave active imaging: range and time-resolved mode averaging[J]. Journal of the Optical Society of America A Optics Image Science & Vision, 2014, 31(10): 2135-2141.

[10] Patrick M A, Holt J A, Joye C D, et al. Range resolved mode mixing in a large volume for the mitigation of speckle and strategic target orientation requirements in active millimeter-wave imaging[J]. Journal of the Optical Society of America A Optics Image Science & Vision, 2015, 32(4): 637-646.

[11] Goodman J W. Speckle Phenomena in Optics: Theory and Applications [M]. Englewood: Roberts & Company, 2007.

[12] Cui Zhenmao, Gao Jingkun, Lu Bin, et al. Real time 3D imaging system based on sparse MIMO array at 340 GHz[J]. Journal of Infrared and Millimeter Waves, 2017, 36(1): 102-106. (in Chinese)

[13] Jiang Yanwen, Qin Yuliang, Wang Hongqiang, et al. A side-lobe suppression method based on coherence factor for terahertz array imaging[J]. IEEE Access, 2018, 6: 5584-5588.