3-D Imaging Using Synthetic Aperture Radar With a Frequency Diverse Array
| Autor: | Li Jingjing, Shan Ouyang, Liao Kefei |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Synthetic aperture radar
Computer science Resolution (electron density) Bandwidth (signal processing) ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION 0211 other engineering and technologies 02 engineering and technology Geotechnical Engineering and Engineering Geology Range (mathematics) Transmission (telecommunications) Radar imaging Electronic engineering Electrical and Electronic Engineering Wideband Image resolution 021101 geological & geomatics engineering |
| Zdroj: | IEEE Geoscience and Remote Sensing Letters. 18:846-850 |
| ISSN: | 1558-0571 1545-598X |
| DOI: | 10.1109/lgrs.2020.2989342 |
| Popis: | In this letter, a 3-D synthetic aperture radar with a frequency diverse array (3-D-FDA-SAR) is proposed for 3-D imaging. By applying an FDA to the 3-D-SAR system, the proposed 3-D-FDA-SAR can achieve real 3-D imaging using a simple hardware structure and a simple imaging algorithm. Specifically, the bandwidth needed for the range resolution is dispersed in space by the FDA, and the spatial resources (large aperture) needed for the along-track resolution are replaced by time resources. Therefore, the transmission and processing of wideband signals can be avoided, so the imaging algorithm only comprises a phase compensation step based on the back projection (BP) imaging algorithm. A resolution analysis of the range, along-track and across-track is presented to illustrate the rationality of the bandwidth dispersion and resource replacement. The simulation and experimental results verify the effectiveness of the proposed strategy. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|