Advancements in Synthetic Aperture Radar Drone Technology

• •The SAR drone now uses an RTK GPS for improved positioning accuracy.
• •A new autofocus algorithm enhances image quality significantly.
• •Interferometric imaging capabilities allow for detailed elevation mapping.

Henrik Forstén has made significant improvements to his synthetic aperture radar (SAR) drone, enhancing both hardware and software capabilities. The latest updates include a new autofocus algorithm and the addition of an RTK GPS receiver, which improves positioning accuracy to within 1-2 cm. This allows the drone to generate high-resolution interferometric images, essential for applications requiring precise elevation mapping. The system can now better handle multiple targets in the radar beam, resulting in clearer images. The improvements are based on the existing hardware, which has been optimized rather than replaced. Forstén's work demonstrates the potential for low-cost SAR technology in various fields, including environmental monitoring and infrastructure assessment.