基于北斗导航卫星的多角度双基地SAR成像与融合

基金项目:

国家自然科学基金(61120106004, 61225005, 61427802)资助课题

Multiangle Bistatic SAR Imaging and Fusion Based on BeiDou-2 Navigation Satellite System

(School of Information and Electronic, Beijing Institute of Technology, Beijing 100081, China)

摘要: GNSS-BSAR 是一种利用导航卫星作为发射机的双基地SAR (BSAR)系统，具有系统代价低等特点，但是其图像分辨率差、信噪比低。结合我国现有的北斗导航卫星系统，该文提出了一种BSAR 多角度观测与数据处理方法，实现了对目标区域的多角度观测，共获取了26 种几何配置下的图像，并提出一种感兴趣区域融合方法生成了多融合图像。获得了较高质量的图像，证明了多角度融合是一种扩展GNSS-BSAR 遥感应用的有效途径。
- 双基地SAR (BSAR) /
- 导航卫星 /
- 多角度 /
- 图像融合 /
- 图像解译
Abstract: Bistatic Synthetic Aperture Radar (BSAR) based on the Global Navigation Service System (GNSSBSAR) uses navigation satellites as radar transmitters, which are low in cost. However, GNSS-BSAR images have poor resolution and low Signal-to-Noise Ratios (SNR). In this paper, a multiangle observation and data processing strategy are presented based on BeiDou-2 navigation satellite imagery, from which twenty-six BSAR images in different configurations are obtained. A region-based fusion algorithm using region of interest segmentation is proposed, and a high-quality fusion image is obtained. The results reveal that the multiangle imaging method can extend the applications of GNSS-BSAR.
- Bistatic SAR (BSAR) /
- Global Navigation Service System (GNSS) /
- Multi-angle /
- Image fusion /
- Image interpretation

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