The author discusses the process of creating synthetic aperture radar (SAR) using a drone, with a focus on low-cost, high-resolution systems. They explain the concept of synthetic aperture imaging and the differences between single-channel radar and multiple-channel radar. The design goal for the radar is to achieve the best imaging performance within a budget of less than 500 EUR, while fitting the radar into a small FPV drone. The author explores different radar architectures, such as pulse radar and frequency-modulated continuous wave (FMCW) radar, and discusses RF design considerations and the importance of pulse repetition frequency. The detailed technical explanations provide insights into the challenges and opportunities of building a cost-effective SAR system for aerial imaging.
https://hforsten.com/homemade-polarimetric-synthetic-aperture-radar-drone.html