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| Citation: | Wu Yang, Bai Yang, Yin Hongcheng, Zhang Liangcong. Terahertz Radar Cross Section Measurements Based on Millimeter-wave Converter[J]. Journal of Radars, 2018, 7(1): 147-152. doi: 10.12000/JR17099
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Terahertz Radar Cross Section Measurements Based on Millimeter-wave Converter
doi: 10.12000/JR17099
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Abstract
The measurement system has been built with Stepped Frequency Continuous Wave (SFCW) signal for Radar Cross Section (RCS) measurements in free-space at 220～330 GHz. The system consists of vector network analyzer, Millimeter-Wave Converters and target support structure. The measurement techniques which are used in scattering measurements are verified by RCS measurement data. The system measurement accuracy is control within about ±3 dB at –23.6 dBsm.-
Keywords:
- Radar Cross Section (RCS),
- Terahertz,
- Scattering
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References
[1] 黄培康. 雷达目标特征信号[M]. 北京: 宇航出版社, 1993.Huang Pei-kang. Radar Target Signature Signal[M]. Beijing: China Astronautic Publishing House, 1993: 59–74.[2] Waldman J, Fetterman H R, Duffy P E, et al.. Submillimeter model measurements and their applications to millimeter radar systems[C]. Proceedings of the Fourth International Conference on Infrared Near-Millimeter Waves, Miami Beach, FL, USA, 1979: 49–50.[3] Jansen C, Krumbholz N, Geise R, et al.. Scaled radar cross section measurements with terahertz–spectroscopy up to 800 GHz[C]. Proceedings of the 3rd European Conference on Antennas and Propagation, Berlin, Germany, 2009: 3645–3648.[4] Iwaszczuk K, Heiselberg H, and Jepsen P U. Terahertz radar cross section measurements[J]. Optics Express, 2010, 18(25): 26399–26408. DOI: 10.1364/OE.18.026399[5] Coulombe M J, Horgan T, and Waldman J. A 160 GHz polarimetric compact range for scale model RCS measurements[C]. Proceedings of the Antenna Measurements and Techniques Association, Seattle, WA, USA, 1996: 239–244.[6] Coulombe M J, Horgan T, Waldman J A, et al.. A 524 GHz polarimetric compact range for scale model RCS measurements[C]. Proceedings of the Antenna Measurements and Techniques Association, Monterey, CA, USA, 1999: 458–463.[7] DeMartinis G B, Coulombe M J, Horgan T M, et al.. A 240 GHz polarimetric compact range for scale model RCS measurements[C]. Proceedings of the Antenna Measurements and Techniques Association, Atlanta, GA, USA, 2010: 3–8.[8] GJB5022-2001室内场缩比目标雷达散射截面测试方法[S]. 2001.GJB5022-2001 Method for measurement of radar cross section of scale target indoor range[S]. 2001. -
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- Figure 1. Measurement system’s sketch map
- Figure 2. Terahertz scattering measurement system
- Figure 3. Measurement flow chart
- Figure 4. Background subtraction results
- Figure 5. Range distance compensation result
- Figure 6. Positionsketch map of amplitude-phase calibration
- Figure 7. Amplitude-phase Calibrator’s signal
- Figure 8. Correction results
- Figure 9. 75 mm Calibration ball’s RCS data processing comparison results
- Figure 10. 75 mm Calibration ball’s RCS results