Infrared and Laser Engineering, Volume. 50, Issue 12, 20210790(2021)
Progress and prospect of microwave coincidence imaging(Invited)
Fig. 3. Resolution analysis of microwave coincidence imaging[15]. (a) Coherent transmissions of conventional imaging; (b) Incoherent transmissions of coincidence imaging; (c) Spatial correlation function of conventional imaging; (d) Spatial correlation function of coincidence imaging
Fig. 4. Spatial correlation functions of transmitted waveforms[9]. (a)-(b) Radiation field and spatial correlation function of random frequency modulation waveform; (c)-(d) Radiation field and spatial correlation function of random amplitude modulation waveform; (e)-(f) Radiation field and spatial correlation function of random phase modulation waveform
Fig. 5. Relationship between effective rank of radiation field reference matrix and size of imaging cell[17]
Fig. 6. Comparison of various algorithms of microwave coincidence imaging. (a) Target scene; (b) Correlation; (c) Least square; (d) Tikhonov regularization; (e) SBL
Fig. 8. Results of the reweighted-dynamic-grids-based method[49]. (a) Target positions; (b)-(d) Results of 1st to 3rd iterations
Fig. 11. Typical wavefront modulation forms. (a) Random wavefront; (b) Vortex wavefront
Fig. 13. Wavefront modulation imaging to a vehicle target in W band. (a) Imaging scene; (b) Target and imaging results
Fig. 15. Principles of three kinds of imaging methods[65]. (a) Traditional optical imaging method; (b) Single pixel imaging method; (c) Coded-aperture imaging method
Fig. 16. Single pixel imaging with tunable terahertz parametric oscillator[66]
Fig. 17. Diagram of digital-array-based microwave coincidence imaging system[15]
Fig. 18. Schematic diagram of plasma-based microwave coincidence imaging system[72]
Fig. 19. The 1-dimensional frequency-diverse metasurface antenna of Duke university[73]
Fig. 20. The 2-dimensional frequency-diverse metasurface antenna of Duke university and imaging result[74]
Fig. 21. Active imaging system with coded metasurface aperture of Duke University and 3D imaging results[75]
Fig. 22. Imaging system with transmission-type metasurface aperture of Southeast University and imaging results[81]
Fig. 24. Coded-aperture imaging experiment in Ka band. (a) Experiment scene and imaging system; (b) Target model; (c) Imaging result of TRM algorithm; (d) Imaging result of SBL algorithm
Get Citation
Copy Citation Text
Yongqiang Cheng, Hongqiang Wang, Kaicheng Cao, Kang Liu, Chenggao Luo. Progress and prospect of microwave coincidence imaging(Invited)[J]. Infrared and Laser Engineering, 2021, 50(12): 20210790
Category: Special issue—Single-pixel imaging
Received: Oct. 28, 2021
Accepted: Nov. 9, 2021
Published Online: Feb. 9, 2022
The Author Email: Wang Hongqiang (oliverwhq@163.net)