GNSS-based multistatic SAR

Nithirochananont, Ussanai (2021). GNSS-based multistatic SAR. University of Birmingham. Ph.D.

Text - Accepted Version
Available under License All rights reserved.

Download (4MB) | Preview


Synthetic aperture radar (SAR) is an efficient tool in remote sensing for imaging the Earth’s surface to detect, monitor, and assess its changes. Despite SAR is widely used worldwide, its operation mainly uses monostatic and bistatic configuration. In contrast, multistatic configuration is confined to simulation level, at least in open literature. This thesis experimentally explored the potential of passive multistatic SAR imaging using Global Navigation Satellite Systems (GNSS) as transmitters of opportunity and a single stationary receiver on the ground, and established a practical framework for GNSS-based multistatic SAR.

During the experiment, a passive SAR system recorded satellite signal reflections off a target area from four GNSS satellites and processed these signals into bistatic images. Those images were combined using both coherent and non-coherent combination techniques to form multistatic imagery. The obtained results showed that the non-coherent multistatic method enhanced information space and revealed object geometric features such as edges, shapes, and dimensions. In addition, variations of bistatic scattering obtained from individual images can be used to coarsely classify different object types. The results also confirmed that a coherent combination of SAR images with such a system was possible and improved spatial resolution as well as power budget.

Type of Work: Thesis (Doctorates > Ph.D.)
Award Type: Doctorates > Ph.D.
Licence: All rights reserved
College/Faculty: Colleges (2008 onwards) > College of Engineering & Physical Sciences
School or Department: School of Engineering, Department of Electronic, Electrical and Systems Engineering
Funders: Other
Other Funders: The Royal Thai Government
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering


Request a Correction Request a Correction
View Item View Item


Downloads per month over past year