Photonics-Based High-Resolution 3D Inverse Synthetic Aperture Radar Imaging
| Autor: | Daiyin Zhu, Yue Yang, Shilong Pan, Xingwei Ye, Fangzheng Zhang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Synthetic aperture radar
microwave photonics General Computer Science inverse synthetic aperture radar 02 engineering and technology 01 natural sciences law.invention 010309 optics 020210 optoelectronics & photonics Optics 3D imaging law 0103 physical sciences 0202 electrical engineering electronic engineering information engineering de-chirp processing General Materials Science Radar Wideband Physics business.industry Transmitter Bandwidth (signal processing) General Engineering Azimuth Microwave imaging lcsh:Electrical engineering. Electronics. Nuclear engineering Photonics business lcsh:TK1-9971 |
| Zdroj: | IEEE Access, Vol 7, Pp 79503-79509 (2019) |
| ISSN: | 2169-3536 |
| DOI: | 10.1109/access.2019.2921802 |
| Popis: | A photonics-based radar for high-resolution 3D microwave imaging is proposed and demonstrated, in which high range resolution is achieved by employing a wideband linearly frequency modulated signal, and high cross-range resolution in both azimuth and elevation is realized by rotating the target around two orthogonal axes to compose a 2D inverse synthetic aperture. The proposed radar performs photonics-based in-phase/quadrature up-conversion and de-chirp processing in the transmitter and receiver, respectively, which features a compact structure with low-sampling-rate electronics in the receiver. An experiment is carried out. The established radar works in the K-band, with bandwidth as large as 8 GHz. Captured echo signals at different rotation angles of the target are processed to a 3D image, in which the voxel values are scattering intensities at different spatial positions. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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