Fig. 1. Schematic of millimeter wave fully- polarimetric holographic imaging

Fig. 2. Structural diagram of 140 GHz fully-polarimetric holographic radar imaging system

Fig. 3. Optical images of imaging targets. (a) Pistol model covered by towel; (b) uncovered pistol model; (c) enlarged surface texture of pistol model

Fig. 4. Amplitude and argument of SHH/SVV of dihedral reflector with 0° fixed to holder versus angle of incidence

Fig. 5. Maximum projection imaging results along range dimension of Sspan after multilook processing. (a) Full aperture; (b) 4 looks; (c) 9 looks; (d) 16 looks

Fig. 6. Normalized maximum projection imaging results by polarization decomposition based on Pauli basis.(a)(d) |a|2=|SHH+SVV|; (b)(e) |b|2=|SHH-SVV|; (c)(f) |c|2=|SHV+SVH|

Fig. 7. H/α decomposition projection results along range dimension pixel of maximum of Sspan. (a)(c) H;(b)(d) α