Publication

Abstract : This paper presents the application of range Doppler algorithm (RDA) on Synthetic Aperture Radar (SAR) image formation for semi-urban terrain. The proposed approach offers significant insights into the capabilities of RDA for accurate terrain mapping and target detection by effectively simulating real-world scenarios that involve the acquisition of raw SAR data from discrete point sources with varying reflectivity. The proposed work involves emulating a SAR system by positioning it at a specific altitude to detect ground targets spread across an area of 100m2. The range Doppler algorithm effectively processes data from high altitudes and precisely distinguishes between targets, yielding exact SAR images. In addition, RDA achieves computational efficiency by leveraging FFT-based techniques, reducing processing complexity in both range compression and azimuth filtering, and using range-dependent phase corrections for secondary range compression (SRC) and range cell migration correction (RCMC) techniques.