| Project/Area Number |
26630179
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Measurement engineering
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| Research Institution | Gunma University |
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Principal Investigator |
Takashi Miwa 群馬大学, 大学院理工学府, 准教授 (30313414)
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | イメージング / 超解像 / ドップラ / 空間変調 / 加振 / ドップラ計測 |
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| Outline of Final Research Achievements |
Generally, the cross-range resolution in coherent imaging is restricted by a point spread function (PSF) of the sensor. Due to the low-pass characteristics of PSF in a spatial-frequency domain, we cannot obtain the high spatial-frequency information. In order to improve the cross range resolution, the bandwidth should widen in the spatial frequency domain. We propose a method in which the spatial frequency shift by using a vibro-Doppler measurement. In this research, we experimentally demonstrate the super-resolution method with vibro-Doppler measurement. The vibro-Doppler measurement can measure high spatial frequency information. Moreover, it can be applied to super-resolution imaging by applying amplitude compensation and demodulation of spatial frequency. we found that this method can improve the spatial resolution by 3 times through the experiment. However, a disadvantage of this method is SNR degradation.
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