Yashang Li, Guozhong Zhao, Qingyun Wei, Yuyang Liu, Chen Kan, Shuai Li. Study on the performance of terahertz passive imaging system[J]. Infrared and Laser Engineering, 2020, 49(4): 0404005
- Infrared and Laser Engineering
- Vol. 49, Issue 4, 0404005 (2020)
Fig. 1. Schematic diagram of optical path of terahertz passive imaging system
Fig. 2. Comparison of THz imaging results for the human body under the different levels of detector
Fig. 3. Information entropy of the images on human body under different levels of detector
Fig. 4. Comparison of THz imaging results for the human body under different gains of detector
Fig. 5. Information entropy of the image on the human body at different gains
Fig. 6. Imaging result after the optimization of level and gain
Fig. 7. Comparison of THz images for the human body under different imaging distances
Fig. 8. Comparison of information entropy and height ratio of the human body's images at different imaging distances
Fig. 9. Comparison of images on the human body at different imaging speeds
Fig. 10. Information entropy of the human body images under different rotational speeds
Fig. 11. Imaging results of metal resolution plates with different landscape stripe spacing
Fig. 12. Imaging results of a metal resolution plate with different portrait stripe spacing
Fig. 13. Imaging results for concealed cell phones and wrenches
Fig. 14. Imaging results of the knives unhidden and hidden
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