Qiufang Wei, Yun Shao, Kun Li, Zhiqu Liu, Fengli Zhang, Xianyu Guo. Microwave Anechoic Chamber Measurement and Scatter Characteristics Analysis of Typical Wetland Vegetation in South China[J]. Laser & Optoelectronics Progress, 2022, 59(2): 0228001
- Laser & Optoelectronics Progress
- Vol. 59, Issue 2, 0228001 (2022)
Fig. 1. Interior view of microwave characteristic measurement and simulation imaging science experiment platform
Fig. 2. Diagram of measurement flow
Fig. 3. Measuring schematic diagrams of reed and zizania. (a) Reed scene; (b) zizania scene; (c) structure diagram of reed scene; (d) structure diagram of zizania scene
Fig. 4. Imaging of reed at 45° incidence angle and -135° azimuth. (a) C band; (b) X band; (c) Ku band
Fig. 5. Imaging of zizania at 45° incidence angle and 0° azimuth. (a) C band; (b) X band; (c) Ku band
Fig. 6. Comparison of RCS of the medal ball between the measurement result by LAMP and the prediction by Mie series[16]
Fig. 7. Measurement results of reed RCS at different incident angles and 0° azimuth angle in different bands. (a) C band (5.3 GHz); (b) X band (9.6 GHz); (c) Ku band (15 GHz)
Fig. 8. RCS scattering curves of reed at 25°‒55° incident angle and 0° azimuth angle. (a) 25° incident angle; (b) 35° incident angle; (c) 45° incident angle; (d) 55° incident angle
Fig. 9. Measurement results of zizania RCS at different incident angles and 0° azimuth angle in different bands.(a) C band (5.3 GHz); (b) X band (9.6 GHz); (c) Ku band (15 GHz)
Fig. 10. RCS scattering curves of zizania at 25°‒55° incident angle and 0° azimuth angle. (a) 25° incident angle; (b) 35° incident angle; (c) 45° incident angle; (d) 55° incident angle
Fig. 11. RCS images of reed and zizania at 20° incident angle and 0° azimuth angle from 9 to 17 GHz. (a) Logarithmic RCS_VH; (b) scatter plots of ratio of logarithmic RCS_HH to logarithmic RCS_VV with logarithmic RCS_VH
Fig. 12. Two dimensional RCS scatter plots of reed and zizania at 25° incident angle and 0° azimuth angle from 7.8 to 17 GHz. (a) RCS scatter plots under VV and VH; (b) scatter plots of ratio of logarithmic RCS_VV to logarithmic RCS_VH with logarithmic RCS_VH
Fig. 13. Two dimensional RCS scatter plots of reed and zizania with incident angle of 55° and azimuth angle of 0° in frequency of 7~17 GHz. (a) RCS scatter plots under HH and VV; (b) scatter plots of ratio of logarithmic RCS_HH to logarithmic RCS_HV with logarithmic RCS_HH
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Table 1. Measurement index and accuracy of experiment platform
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Table 2. Parameters of reed and zizania
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Table 3. RCS comparison table of reed and zizania at 35° incident angle and 0° azimuth angle in low frequency points
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